C CHECK IF FILE OPEN

.net - How to check if file is being used by another process ...

function checkFileStatus ($filePath) { write-host (getDateTime) " [ACTION] [FILECHECK] Checking if" $filePath "is locked" $fileInfo = New-Object System.IO.FileInfo $filePath try { $fileStream = $fileInfo.Open ( [System.IO.FileMode]::Open, [System.IO.FileAccess]::Read, [System.IO.FileShare]::None ) write-host (getDateTime) " [ACTION] …

Is there a faster way to check if a file is in use? - Ask Ubuntu

If you are running some command that operates on the file, look and see what documentation that command/program offers and see if it can't make a lockfile. Failing that, see if it can't make a file with its PID inside it. Then you can look at /proc/<PID>/fs to see if your file is currently open or not.

How to check whether the file is already open? - CodeProject

Solution 1. The Open method should nicely handle such a scenario, that is: the method failure (together with the exception) is a test to see if the file is already open. Posted 7-Mar-12 22:51pm. CPallini. Comments.

how to check if the file is already open - C - Tek-Tips

EBADF - Bad file number. There are two possible causes: 1) The specified file handle is not a valid file-handle value or does not refer to an open file. 2) An attempt was made to write to a file or device opened for read-only access. EEXIST - Files exist. An attempt has been made to create a file that already exists.

How to determine, whether a file is open? - linux

The example bash algorithm above doesn't, all it does is note the fact that a filename is opened by something, openfiles [$l]=1, so all it ends up with is a list of open files. – cas May 10, 2021 at 1:04 though I don't need to use it, I'm paying the price of collecting it.

Error handling during file operations in C/C++ - GeeksforGeeks

In C/C++, the library function ferror () is used to check for the error in the stream. Its prototype is written as: int ferror (FILE *stream); The ferror () function checks for any error in the stream. It returns a value zero if no error has occurred and a non-zero value if there is an error.

[Solved] c# checking if a file is already open - CodeProject

Can someone help me and show me a way of checking if a file is open such that i don't open the same file that is open...may be display a notification that the file is already open. ... Thanks for all the solutions however the first solution only works on documents yet i want to check for any file types....Please anyone with a solution help! 1 ...

The best way to check if a file exists using standard C/C++

The only way to check if a file exist is to try to open the file for reading or writing. Here is an example − In C Example #include<stdio.h> int main() { /* try to open file to read */ FILE *file; if (file = fopen("a.txt", "r")) { fclose(file); printf("file exists"); } else { printf("file doesn't exist"); } } Output file exists In C++ Example

winforms - Using C# to check if a file is in use - Stack Overflow

If a user has the file open, it will do all of that but then throw an exception when it tries to delete. I need it to throw the exception BEFORE it copies, renames, moves and so on. c# winforms Share Improve this question Follow asked Jan 11, 2019 at 18:08 TnD_Guy 113 1 2 13 2 You're fighting too hard. What you should do is try to rename the file.

see if a file is open - UNIX

The only commands that will check if a file is open are fuser and lsof. lsof is more useful if your system has it. Code: who_has_t=$ (lsof /path/to/myfile) if [ [ -z $who_has_it ]] ; then echo "nobody is using myfile" else echo "file in use" fi You will have to see how lsof displays files open for write on your system by playing with it.
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