Makefile test if directory exists. Makefile: checking existence of files.

Makefile test if directory exists This will return true only if the file exists and is a directory. – I would like to be able to check if a certain folder (FolderA) exists and if so, for a message to be displayed and then the batch file to be exited. Furthermore actually I would not consider python-3. Thanks in advance Here is how I would check if any files exist in the directory using bourne shell: this returns the number of files in a directory: ls -l <directory> | egrep -c "^-" you can fill in the directory path in where directory is written. 2, Syntax of Conditionals: "Often you want to test if a variable has a non-empty value. • else (echo %f False): Prints the filename and False if the file does not exist. 3. Check if a Folder Exists. You should also do something with the possible IOException that An alternate way to make a directory accessible is to try to create it with mkdir -p before testing whether it's writable. Any and all directories specified in path are created, unless they already exist or unless some part of path is invalid. txt, file3. However, even though we successfully printed the message, we want the entire line to fail, so Check if a directory exists in a Makefile You can check if a directory exists by using the wildcard function. You should create files and if a file creation needs a new directory then quietly create the directory within the rule for the relevant file. If you check for a file, check that no folder of the same In a makefile for GNU Make I use this idiom to test whether a file exists: static: ifeq ($(wildcard $(FileName)),) # do something when the file doesn't exist else # do something different It's not a general scripting tool. – MadScientist. Then I will present the most bullet-proof solution I have been able to come up with. The first half of the pipe ensures that the first character of output is "-" for each file. IF EXIST does check folders as well as files. Only fs. -c FILE - True if the FILE exists and is a special character file. Donald Duck. For example, see if FILE exists and is a directory. I would like to create a makefile target that recognizes any object file and creates that directory before any Due to Facebook policy, RTMP will be deprecated from the Live API, so we need to use RTMPS (RTMP over a TLS/SSL connection). Let's also assume that your default goal is all, and you want all to fire build, that itself fires install if and only if lib does not exist From GNU make, chapter 7. In my Makefile i want to check, if script exists and depending on it i setting up CC variable. I am using following function to create the directory. 1 ``` In my solution, the line starts with a EDIT: This only applies to some versions of make - you should check your man page. MYDIR = /home/myaccount/dev [-d $(MYDIR)] || mkdir-p ifeq ($(shell test -e file_name && echo -n yes),yes) is evaluated as Make reads the Makefile, not as the commands are run. exists() is deprecated, but fs. If it does not matter, you can go with solution 2, it will create the folder if not In GNU make, conditional parts are used e. How can I make a Makefile notice the existence of a new file? 2. Hope it helps! Makefile check if folder and/or file exists. Check File Existence with Makefile I have shared you ways of creating the folders when an folder does not exists. As make can apply rules when some files are missing, it could as well be made to apply rules when some files are present. -type d -name "test*" -exec mv -t /tmp/target {} + @caelras Off-topic but clarification: Make was perhaps first developed in Unix world, but can be used in Windows as long as you are using a Windows-compatible make or an environment that can run it. On terminal: setenv ENV_PARAM x In Makefile: PARAMS := a b c if ${ENV_PARAM} exists in $(PARAMS) true else false endif To check how to check if a Directory Exists without exceptions in Python we have the following ways to check whether a file or directory already exists or not. Hot Network Questions See a lot of the ball cardboard counter - what game? make: I'd like to create a function that I can call from a phony, and that accepts a variable containing a list of files. • Enclose the entire loop in parentheses to ensure it runs as a single line. GetFiles using the SearchOption. File. ) Loops through the list of files (replace file1. – Beta. I needed a solution which would work for multiple goals/targets and also not trigger the Makefile to be remade. But my Makefile don't work correctly - in system, that haven't colorgcc, make always set $(CC) as colorgcc. If you have a use case where you need to check if folder does not exist and you want to keep track of that so you can go with solution 1. egrep then counts the number of line that start with that symbol using For this specific case, I'm not going to answer the question "how to find if a directory exists", because that's already been answered, but I'm just going to point out that in your clean task you can use failonerror="false" to keep the ant task from exiting. This cmdlet returns a boolean which we can use in an if-else statement for example. 1. Some system have installed colorgcc script. One can use the test command to check file types and compare values. The right way to create a directory if it doesn't exist is The main use of Make is to list out a set of directions to compile some c or c++ files, although it can solve other similar problems. 96. How can I do that? I did some digging and found a clue: test -d directory will return true or false depending on whether the directory exists or not. If you run the cmdlet directly in your console, you will see that it will just return True In C#, how do I check if a specific file exists in a directory or any of its subdirectories? System. Never do “check then do”, always do “do and catch failure”. 1 Built In this quick tip, we will discuss how to check the existence of a file in a Makefile. os. like this. exists(file. CMake check that a local file exists. If you don't check for existence of the folder, the Folder handle will leak unless you specifically release it. Hello: Can someone please help me figure out what is wrong here, my script does not move on to the "else" part In my opinion, directories should not be considered targets of your makefile, either in technical or in design sense. This should be suitable in a clean task because if there's nothing to clean, it should not be a problem. The function should check for the existence of each file and act based on the result (print a message, etc. ≡. create(file. The rules the filesystem uses to update the modified time on directories do not work well with make. Check File Existence with Makefile Conditional. Public Function FileFolderExists(stringfolderName As String) As Boolean FileFolderExists = False If Dir(stringfolderName, vbDirectory) = "" Then Return If This code checks for the existence of the directory first and creates it if not, and creates the file afterwards. If APP not exists under adm directory , then need to create this directory and add ownership to this directory , ( as chown system ) . Don't forget that the directory might be created while your script is running, so it's possible that your check will show that the directory doesn't exist but the directory will exist when you try to create it. Verify if directory /var/cti/adm/APP exists. After reading this answer for "How do I check if file exists in Makefile?" question, I decided to try. ) Check if the directory exists just by executing the test command on the remote side. 7. mkdir(full_path) (with not) and actually no. exists is deprected now:. Makefile check if folder and/or file exists. The full solution is shown below and then I will explain some of it. If it doesn't start with a TAB (as in @rane's example), Make interprets it as not being in a rule, and evaluates it before running any rule, regardless of the target. CreateDirectory does exactly what you want: It creates the directory if it does not exist yet. As per the man page, this does:-B, --always-make Unconditionally make all targets. Few variables like $@, $<, $% and the function wildcard seem to handle the \ escape sequence as a space correctly but most other makefile variables and functions like UPDATE 2: if you don't want to rely on the existence of any files in the directory, you can also test the directory name directly. So make -B test would solve your problem if you were in a situation where you don't want to edit the Makefile or change the name of your test folder. py develop make test # . Q: Is there any way to determine whether or not a specific folder exists on a computer?A: There are loads of ways you can do this. Otherwise do nothing. cmake; Share. The project directory contains a Makefile and a sub-project directory. fs. Makefile: Test directories for existence and take first one found. exe "MKS project already exists. The syntax is: $ test -d "DIRECTORY" && echo "Found/Exists" || echo "Does not exist" The test command is same as [conditional expression. pdf in the same folder with the makefile. In each system, a Dropbox folder is accessible as a local directory. I knew that if exist "long path\nul" does not work on Windows batch. stat to check if a directory exists and fs. 4. If FolderA does not exist, I would then like to check if another folder (FolderB) exists. And if the folder already exists, It will do nothing. I will also comment on the 3 points. Directory. cwi. d for every . The wildcard function returns a true value if the specified file or pattern exists. shell=(ssh -o StrictHostKeyChecking=no "${SERVER_URL}") if "${shell[@]}" [ -d "/flask-ci-cd" ]; then In case of directory name with spaces I would go with: if "${shell[@]}" sh <<'EOF' [ -d "/directory with spaces" ] EOF then Pass set -x to sh to see what's happening also on the It correctly recognizes and determines file names without extensions, such as Makefile. JonOsterman JonOsterman. Anything that Make interprets gets expanded as the Makefile is being read, where you typically want your recipe to examine things as they are when that specific recipe is executed. 2. retrlines('LIST') # list directory contents ftp. The open statement allows for the code to jump to a particular line (specified by err=) if the open statement fails: Ok, I use below statements; but still can't create tmp folder under current directory. By default, make execution will stop if any sub-shell returns an unsuccessful exit status (by convention, 0 means success, so anything else will halt execution). GNU Make, referenced here, is the most popular in the Unix-like OSes and often used with autotools. I would like for a way to have my makefile copy the header files from the root directory The above function split the path you passed to the function and will check each folder whether it exists or not. g++ -o $(OUT) $(DEBUG) $(addprefix $(BIN)/, $(OBJECTS)) test if directory exists in a makefile. py). venv make deps # . With version 'GNU Make 4. You can use this function in a conditional to test for the presence of a specific substring in a given string. Hence, you can use the following syntax too: I write expect script that login to remote machine and run there some scripts But I need also to verify the following. path(mainDir, subDir)), FALSE) This will return FALSE if the directory already exists or is uncreatable, and TRUE if it didn't exist but was succesfully created. if [ -d . About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & I like to set my Makefile up so that it uses a . venv directory if one exists, but defaults to using the PATH. Looks like ifeq ($(OUTPUTDIR),) have problem. Makefile check if folder and/or file Not sure I understand the role of the build target. Hot Network Questions Pancakes: Avoiding the "spider batch" First instance of the use of immersion in a breathable liquid for high g-force flight? I You MUST check if the folder exists. makedirs(d) or if making the directory is subject to race conditions (i. The $(and $(findstring. mkdirSync to create a directory without callback, like this example: Is it possible to check an higher level directory with CMake ? Or maybe doing it with an indirect method. c or . To call the function, use below statement: GenerateFolder "H:\Desktop\Nithesh\SrcFolder" Share. 1 documentation not pass: if not os. ),) # fall back to default directory SOURCE_DIR := src/default endif I have tried either the bash way or the make way but as this is preincludes to setup the enviroment I don't have a specifik target but make calls out wrong due to the check fails. I believe this is a bit of a flaw in the design of make. var MyList = from f Unfortunately Dir(strFullPath, vbDirectory) returns the name of a file or a directory matching strFullPath. . If FolderB does not exist, a message should be displayed and the folder should be created, and if FolderB How to check if a directory doesn't exist in make and create it. Firstly, there was the pitfall in which you shall check for a directory and exists would return true, but it was a file with the same name that was found at the destination, leading to follow-up errors. CreateDirectory(sPath + "/<Folder name>") Else 'Something else happens, because the folder exists End If I declared the folder path as a String (sPath) so that way if you do use it multiple times it can be changed Is there a way using gnu make to do this? I want to do this outside any recipe, before make starts building any targets. – tripleee. The simplest method would be just to use the exit status of the test command: Trying to check if a directory exists for my Makefile. variable to a value within a range/list. CreateDir('TestDir') How should I make sure that I use this CreateDir function only when TestDir does not exist? Using test command. The original code appears to work on Vista. Inside the sub-project directory, there is another Makefile and some source files. xxx/path) Dim URI As String = Me. quit() You need to create a folder if it doesn't exist eh? Well, here is an example of how to do it. Thus if file_name exists when the Makefile is read, the check target will run echo "Hello exists", otherwise it won’t. DirectoryExists(sPath) = False) Then My. There's no need to do an explicit check first. Validating file existence in a Makefile for executing a script. How to delete all except a directory in Makefile? 0. Do you need this to check if you can use an For me on Windows 10 the following is working great: if exist <path> rmdir <path> /q /s q stands for "delete without asking" and s stands for "delete all subfolders and files in it". Sample wrong path can be: wrong path : /analysis/alertData ( correct path : /analysis/alertData/logs/ ) wrong path : /abc/xyz/ ( path does not exit in HDFS ) I tried using Hadoop dfs -test -z/-d/-e options did not worked for me. I've been known to do the following: mkdir -p ${TARGETDIR} && test -w ${TARGETDIR} If the first command fails, the second isn't tried. If you really mean to test an environment variable (as opposed to a make variable), then simply do so in the commands: Check if a directory exists and create it if necessary? The direct answer to this is, assuming a simple situation where you don't expect other users or processes to be messing with your directory: if not os. Visit Stack Exchange How to check the existence of the directory before creating a new directory using JSCH SFTP API? I am trying to use lstat but not sure it's doing the job that I need. Makefiles should really be described in terms of files as much as possible; in your case, check needs file_name and file_name1, so To check the existence of a file or folder, you also can use the isfolder or isfile functions. For example: test -d Desktop/ && echo "Directory Exists" Directory Exists test -d Desktop1/ && echo "Directory Exists" # nothing appers In Qt, how do I check if a given folder exists in the current directory? If it doesn't exist, how do I then create an empty folder? c++; qt; filesystems; Share. Thanks in advance I am trying to use lstat but not sure it's doing the job that I need. It is still not fully equivalent because of the cascade. part is just a comparison of two strings. Waiting for shell When i write $(LIB_PATH) : $(LIB_PATH) i'm expecting that my Makefile check if my lib is updated or exist and if that's not the case compile it (like objects and sources) but when i do make it only argue about circular rules and compile anyway my library. Hot Network Questions Deriving multiple hashes from a single password for different use cases What key is Chopin's Nocturne Op 37 No 1 in G minor? How VLAN helps in a scenario where different people in different places who are “logically” tied together Makefile check if folder and/or file exists. The best solution in this case is to use order only prerequisites as mentioned in @TeKa's answer (which should be the accepted answer). x a real successor of python-2. Stack Overflow. Check if a directory exists with os. 133 1 1 gold badge 3 3 silver badges 14 14 bronze badges. The easiest way to check if a directory exists in PowerShell is with the Test-Path cmdlet. GetDirectories targetDirectory for subdirectory in subdirectoryEntries do processDirectory subdirectory [<EntryPoint>] let main args = for path in args do if File. I think, what i get from your answer is that make is unable to do what i want. txt with your actual file names). if the file exists then, check if the file size is greater (3 Replies) Discussion started by: sandy1028. * I put a dash in front of the command, so that if it fails (because the directory doesn't exist, for example) your top-level make will Makefile check if folder and/or file exists. exists and fs. Could you give me some comments? In my solution, the line starts with a TAB, so it's a command in the check-env rule; Make won't expand it unless/until executing the rule. Something like: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog Okay. If "my_dir" exists, make treats the "my_dir"/Makfile dependency as an actual file within a subdirectory, and a "touch" of /my_dir/Makfile will force a To check the existence of a file in a Makefile, we can use the ifeq and wildcard functions. Here is what I ended up using: #!/usr/bin/env bash set -euo pipefail dir="$1" targets="$2" # If there is no Makefile then return. -d FILE - True if the FILE exists and is a directory. I don't want to install a program in three distinct systems. isdir() — not pass: if not os. If you want a compiler independent way of doing this, you can try to open a small file within the directory. Computer. Example I'm writing a Makefile recipe that needs to execute IF AND ONLY IF a certain file exists Here's what I have: $(if $(shell test -s ${MFN_LSTF}), \ $(foreach mfn, $(shell cat How to check if a directory doesn't exist in make and create it. Lets say i pass a wrong path as input or path which does not exist so how to handle that in shell script. ifeq ($(shell test -e file_name && echo -n yes),yes) is evaluated as Make reads the Makefile, not as the commands are run. – How to check if a directory doesn't exist in make and create it. 8. Follow edited Dec 6, 2017 at 13:05. Theory and Practice. Follow edited May 8, 2017 at 13:45. Method 2: Create Directory If It Doesn’t Exist I want to create a directory say TestDir but only when that directory does not exist. What I do is create a file with the extension of . Hostname & path Dim response As FtpWebResponse Dim DirExists As Boolean = False First I will point out a number of issues that make this problem difficult to solve perfectly. path(mainDir, subDir)), dir. asked Dec 6, 2017 at 12:59. Commented Jul 3, 2022 at 21:55. When the value results from complex expansions of variables and functions, expansions you would consider empty may actually contain whitespace characters and thus are not seen as empty. Exists path then // This path is a directory processDirectory path else Check if the directory exists just by executing the test command on the remote side. If nosetests exists, then it will execute the instructions from run_tests target (in other words, nosetests -v test_digraph. • @if exist %f: Checks if the current file exists. Note that fs. The compiler complains if it doesn't exist. 3 form. Commented Jul 4, 2022 at 18:11. if ! [ -d "$1" ]; then printf "Error: ‘%s’ is not a directory. As an aside, a more idiomatic way to write the method would be to take advantage of the fact that Ruby automatically returns the result of the last expression inside the method. Problem is -$(MAKE) -C my_dir Here's what I changed: * I didn't make `target' depend on a file named Makefile, since I'm not certain that such a file actually exists (perhaps you named it `foo. Testing if a file exists in a make file. Path. exists()Using os. Check File Existence with Makefile Conditional . It can also All I'm trying to do is have a text field where I can type the name of a new directory, check if that directory exists, and if not create it. The result is either 0 or 1. It depends on what version of make you're using and what operating system you're using. 0. How to check if a file exists in Makefile . The Test-Path Cmdlet. Let's assume it is another intermediate phony target. Contains("/") Then path = AdjustDir(directory) 'ensure that path starts with a slash Else path = directory End If ' Set URI (formatted as ftp://host. path. js callbacks. AllDirectories overload, but that seems a bit heavy handed. 90 Built for Windows32' it is fine. Then when the first tries to make it, it will fail because the directory already exists. Improve this answer. Unfortunately I can not just make a standard dependency to check for the header files in "example" because each time I copy the header files from root to "example", the header files in "example" will be considered updated and will trigger that dependency each time I run make. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. I have found about 50 other people with almost the exact same code, so thought I had it correct but I keep getting Directory exists as per the "if" statement. ifeq ($(CC),gcc) $(CC) -o foo $(objects) $(libs_for_gcc) else $(CC) -o foo $(objects) $(normal_libs) endif The GNU make manual has all the details. Testing if a file exists in a make file . If you want to check for the existence of a particular folder (and not a file of the same name) then use foldername` in the IF` clause. isdir() — Python 3. We used this example in an application that processes millions of folders. cpp file, and then "include" the . If it does not exist it will create the respective folder until the target/final folder created. isdir(). For simple make on a POSIX system, you can pre-create the Test-Path -Path 'C:\Temp' # True Test-Path -Path 'C:\Temp' -Not # False Test-Path -Path 'C:\Txmp' # False Test-Path -Path 'C:\Txmp' -Not # True This has a couple of advantages: Familiar syntax: when you're not using the custom switch, syntax is identical to the native command, and when you are it's pretty intuitive what's happening, which means less cognitive Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog ifelse(!dir. I have a file tact1. Is there a nicer way to check whether a directory exists from within a makefile? Make commands, if a shell command, must be in one line, or be on multiple lines using a a: if test -d wibble; then echo exists; else echo does not; fi b: if test -d wibble; \ then echo exists; \ else echo does not; \ fi Are a couple of ways. See Testing Flags, for a practical application of findstring. pdf" Dim FileCounter As Integer = 0 Dim FolderName As Integer = 1 Dim recordcount As Integer = I am trying to create a script to detect whether a directory exists, and if it does not, to create it. 101. ” I'd like to add a test so the Makefile fails with a message telling the user the folder is missing. # Check that the specified directory exists – and is in the PATH. For local development, I like to use a virtual environment, so I run: # Running this: # Actually runs this: make venv # /usr/bin/python3 -m venv . The one thing you must NEVER do is use a directory as a simple prerequisite. exists(d): os. 5. Test if files in another directory exist in makefile. Shell Programming and Scripting. 0 is for a directory, and 1 is for everything else. \ Syntax for the file command is - test -f FILENAME && echo exists || echo not exists This accomplishes some of what we need. in Makefile remove folders if a filename with the same basename exist. There are several 'make' dialects. The "test -f" command can also check if a particular file exists. You can also pass the -B flag to make. Code: FILE = 'tact1. Note that to simply check if the directory exists you can use. 12. Add a comment | Your Answer Reminder: Answers generated by artificial Directory. exists(full_path) : os. If the Bash one-liner: check if a directory exists; if so, delete it, then create it anyway. 100. Makefile: checking existence of files. JonOsterman. Public Sub Main() Dim SourceDirectory As String = "E:\Data" Dim TargetDirectory As String = "E:\CN" Dim FileExtensionsToProcess As String = "CON*. Here's part of Makefile: If you're using the mingw make, then the answer sholud be the same for all platforms: dirs-exist: test -d dir1 || echo Run make install first && exit 2 test -d dir2 In For the first directory we use the or operator to print a message if the test fails. \n" >&2 return 1 fi # Check that the specified path is a directory that exists. The easiest way to do this is to use the Test-Path cmdlet. Table of Content OS ModuleUsing os. mkdir to create a directory with callback, or fs. Let's consider a simplified project structure with two sub-projects. if [ -f Tool/Rules. py and nosetests -v test_not_digraph. isdir()Pathlib ModuleUsing pathlib. This command takes a file name as an argument, then returns a Boolean value of "true" if the file path you passed the command To check if a directory exists you can use a simple if structure like this: if [ -d directory/path to a directory ] ; then # Things to do else #if needed #also: elif [new condition] # Things to do fi You can also do it in the negative: if [ ! -d directory/path to a directory ] ; then # Things to do when not an existing directory Note: Be careful. Thus, the two examples, $(findstring a,a b c) $(findstring a,b c) produce the values "a" and "" (the empty string), respectively. is_dir_in_path() { if [ -z "${1:-}" ]; then printf "The path to a directory must be provided as an argument. mak ] then echo testfile exists! fi also . It looks for a given path and returns True if it exists, otherwise it returns False. if after checking the path exists, something else may have already made it) do Testing if a file exists in makefile target, and quitting if not present. Each line in a makefile is send to a Check if a directory exists in a Makefile You can check if a directory exists by using the wildcard function. Any Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog I know the if exist path\nul test for a folder used to work on MS-DOS. isfolder and isfile search for files or folders only on the specified path or in the current folder, which can lead to clearer and faster results. login() # user anonymous, passwd anonymous@ ftp. Write a command line in Makefile: Create a directory if it does not exist. – Stack Exchange Network. The path must be relative to the project directory (what happens if the Makefile is moved to another directory?) The problem is that make assumes each line is a separate command. I did not realize until today that if exist path\nul works on Vista and beyond as long as path is in the short 8. When I run make checksum to generate checksum data under a Dropbox folder, I want the makefile uses an appropriate command after detecting which checksum command is available in the current machine. how to check if a directory exists before executing a command in a makefile. -e FILE - True if the FILE exists and is a file, regardless of type (node, In my makefile configuration, all object files get compiled into a specific directory. If you want a command to span multiple lines, you need to backslash escape them (except for the last one, of course), like so: test if directory exists in a makefile. /Tool ] then echo testfile exists! fi as well as versions with quotes and similar. It depends upon the requirement on the one. If directory exists then, check if the folder contains some files. "; exit 1; \ fi Using version 'GNU Make 4. I can do it with LINQ and System. To check if a path is an existing directory, use os. This works well to ensure that directories will be created before files are stored into You don't have to check if the directory exists first: if you use -p then mkdir will create the directory if it doesn't exist, or silently succeed if it does exist. The path parameter specifies a directory path, not a file path. Secondly, exists would return false if the file cannot be read only on Windows, but not on POSIX systems, because its underlying lstat call would still succeed on POSIX If you need to mv some directories to another according to some pattern, than you can use find: find . d files. Please advice how to check if directory exist in expect script and if not need to One job can test that it's not there but before it creates it, another job creates the directory. This would not make rules more complex. Please note that I couldn't verify some of your method calls as I don't have your complete code, so I'm assuming the calls to things like getTimeStamp() and getClassName() will work. e. How to check whether a file exists, outside a Makefile rule? Hot Network Questions "A speedy car" — Is this phrase natural to you? Label an equation in environment multlined Can I have two different lst styles for lstlisting and lstinline? Every command line in make runs in its own sub-shell. First, I check to see if the folder doesn't already exist by entering this code: if not exist "FOLDERPATH" ( mkdir "FOLDERPATH" ) So if I run the code. js File System command fs. exists() accepts parameters that are inconsistent with other Node. exist searches for files and folders on the search path, which can lead to unexpected results. According to the docs this is no more true. It looks at the targets and checks to see if they exist. I don't know if it was broken with the introduction of long file names. The user gives Make some goal, say “generate the file hello”. You didn't specify what compiler(s) you are using, but if you have access to gcc/g++ you can use the -MM option. About Archives Categories Tags Authors 中文 ไทย [Makefile] Create Directory If Not Exist January 30, 2016 Edit on Github. How can I test if a filename matching a glob exists in cmake? 5. Unfortunately, I found out the difference between different versions of Make. I'm having trouble with a makefile I'm trying to write that uses a bash command to test for the existence of a certain directory. I just Identified that this method has a serious problem. Improve this question. exists()OS Modul I had the same problem. My target looks like this: Skip to main content. my scripts does not check if directory exists. venv/bin/python setup. And you can also concatinate the command: (if exist <path> rmdir <path> /q /s) && <some other command that executes after deleting> File test operators #. txt, file2. A directory always has an entry . To check the directory I'm using: if [ -d "D:/MKS" ]; then \ echo. 3 Replies. \n" "$1" >&2 return 1 fi let subdirectoryEntries = Directory. The If I wanted to specify a path to save files to and make directories that don’t exist in that path, is it possible to do this using the pathlib library in one line of code? Skip to main content. dir. Exists only seems to accept a single parameter with no overloads to search subdirectories. ) I know how to check for the existence of files, but in the context of a function call, I see several ways to go I'm using this script to connect to sample ftp server and list available directories: from ftplib import FTP ftp = FTP('ftp. How to check if a file exists in a particular directory? My requirement is to check whether is a file exists in a particular directory or not. How to check whether a file exists, outside a Makefile rule? Hot Network Questions How did Jahnke and Emde create their plots Can two wrongs ever make a right? Chain falls behind rear sprockets - safeguards? PSE Advent Calendar 2024 (Day 11): A Sparkling Sudoku Er, no. Context. How do you check if a directory does not exists in bash? One can check if a directory exists in a Linux shell script using the following syntax: [ -d “/path/dir/” ] && echo “Directory /path/dir/ exists. path (main_dir, sub_dir)) This function will return TRUE if the directory exists and FALSE if it does not. • echo %f True: Prints the filename and True if the file exists. Dim sPath As String = "Folder path here" If (My. It is a QA check to make sure user sets the env. In this article, I will show you how to use the Test-Path cmdlet to check if a folder exists. The usual way to do this is to have a dummy target that is never going to be generated by the make scripts, so every time make runs it has to execute the relevant commands. 8,883 23 23 There are a number of ways. path(mainDir, subDir)) The canonical way is to use the test(1) utility: test -d path && echo "Directory Exists" where path is the pathname of the directory you want to check for. Unfortunatelly I don't know a better way to compare two strings in a Makefile I would like to translate this Linux/Bash script to Windows shell: if test -d myDirName; then echo "ok"; else mkdir myDirName; fi It tests if a directory exists, and if it doesn't it creates it. Exists path then // This path is a file processFile path elif Directory. existsSync() does not use a callback. If the target does not exist it executes the commands for that target. pdf' all: ifneq ("$(wildcard $(FILE))","") @echo "File exists" else @echo "No file" endif Output: $ make No file I tried the full path to the file: same result Otherwise create and delete the Directory ' Adjust Paths Dim path As String If directory. existsSync() is not. Follow edited Oct 7, 2019 at On newer gnu-make, you can use 'order-only-prerequisites`. This eliminate the timestamp checking, and only required that the prerequisite will exists. The test command includes the following FILE operators that allow you to test for particular types of files:-b FILE - True if the FILE exists and is a special block file. I don't find the way the check the existence of that directory. Test whether a directory exists inside a makefile. How to check if a file exists in Makefile. So you're doing extra work (create the command string, launch /bin/sh to pull it apart again) and some of that extra work leaves you open to shell injection attacks (spend some time in the CERT advisories for Ruby and you'll see how common this problem is). exist?. venv/bin/python -m tox Test-Path -Path 'C:\Temp' # True Test-Path -Path 'C:\Temp' -Not # False Test-Path -Path 'C:\Txmp' # False Test-Path -Path 'C:\Txmp' -Not # True This has a couple of advantages: Familiar syntax: when you're not using the custom switch, syntax is identical to the native command, and when you are it's pretty intuitive what's happening, which means less cognitive Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog ifelse(!dir. You could evaluate the result of the Test-Path like in the code Note that the fact that you are using Exists() to check for file or directory name in use is subject to race conditions. Only make target if file exists. g. Makefile check if folder To answer your question regarding spaces in file/directory names, most of the Makefile functions do not handle spaces in filename, and most do not respect even the \ way of escaping spaces. mk'). GitHub Gist: instantly share code, notes, and snippets. Let's look at a simple example where we only want to run a download of a very large directory if it is not already present. How to check if a directory doesn't exist in make and create it. But how do I You can use the following methods to check if a directory exists in R: Method 1: Check If Directory Exists. Unfortunatelly I don't know a better way to compare two strings in a Makefile In this quick tip, we will discuss how to check the existence of a file in a Makefile. check if CMake module exists. Every time this method was called, the application retained the file handle to the The stuff in the recipe should be shell script, not Makefile syntax. (This is a common beginner FAQ. About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about This makefile will check if nosetests exists, if not it will execute the tests directly from Python (using /usr/bin/env python test_digraph. test -d $(target_as_dir) -a ! -h $(target_as_dir) checks if it is a directory (-d) and (-a) not (!) a symlink (-h). – willeM_ Van Onsem Some answers here says that fs. (The callback parameter to fs. Commented Aug 22, 2013 at 20:30. IO. cmake: check if file exists at build time rather than during cmake configuration. existsSync are both deprecated. , because it points to itself: SOURCE_DIR := src/$(project) ifeq ($(wildcard $(SOURCE_DIR)/. (I'm assuming it is an exceptional condition for the file to already exist). Public Function FileFolderExists(stringfolderName As String) As Boolean FileFolderExists = False If Dir(stringfolderName, vbDirectory) = "" Then Return If Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company If it matters whether the file you're looking for is a directory and not just a file, you could use File. 7: both languages differ on so much aspects that they are - by some - considered different languages. Thus if file_name exists when the Makefile is read, the Use test command to check if the file exists or not and then use rm to delete it. FileSystem. So running exit just exits that sub-shell--not the makefile as a whole. directory? or Dir. If you're targeting a usual or "patterned" file, just use make's internal variable $(@D), that means "the directory the current target Makefile - Create a directory if it does not exist. nl') # connect to host, default port (some example server, i'll use other one) ftp. To check the name refers to a directory you have to use the GetAttr function:. For simple make on a POSIX system, you can pre-create the system will launch /bin/sh to parse the mkdir -p "foo/bar" string and then the shell will run /bin/mkdir. isfile()Using os. exists (file. In C#, how do I check if a specific file exists in a directory or any of its subdirectories? System. Leave empty spaces on either side of both I am using makefile to build my program in multiple system. This is what we do if the folder already exists: You can use the Node. If the directory already exists, mkdir -p will succeed. 1. At any point after your Exists() test has passed, something could have created a file with that name before your code reaches the point where you create a file, for example. And so, stark's answer should be accepted instead. hlaav texk igb znxspn khlz zpux gkgfhx qshbpx laouonn bmuu