unlink command is used to delete a file by calling the
unlink() system call. This command is commonly used in shell scripts to delete files that are no longer needed. The syntax for the
unlink command is as follows:
unlink [OPTION]... FILE...
FILE is the name of the file that you want to delete. You can specify multiple files to delete at once, separated by spaces.
To delete a single file:
To delete multiple files:
unlink file1.txt file2.txt file3.txt
Specific Use Cases
unlink command is often used in shell scripts to delete temporary files or log files that are no longer needed. For example, you might have a script that generates a log file each time it runs. To prevent the log files from taking up too much disk space, you could include a line in your script that deletes the log file after it has been processed:
#!/bin/bash # Run the script and generate a log file ./myscript.sh > log.txt # Process the log file here... # Delete the log file unlink log.txt
unlink command has only one option:
|-v||Verbose mode. Prints a message for each file that is deleted.|
If you try to delete a file that you do not have permission to delete, the
unlink command will fail with an error message. To delete the file, you will need to either change the permissions on the file or run the
unlink command as a user who has permission to delete the file.
If you try to delete a file that does not exist, the
unlink command will fail with an error message. Double-check the spelling of the file name and make sure that the file actually exists before running the
unlink command is similar to the
rm command, but it is more lightweight because it only calls the
unlink() system call to delete the file. The
rm command, on the other hand, performs additional checks and operations before deleting the file.