24 ways to check the status of files using if commands on Linux
Tuesday 23 August 2022
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There are a lot more ways to check files using if commands than many of us realize. Although this information is included in the bash man page, that man page has thousands of lines and you could easily find yourself paging down more than 100 times to reach it.
This post, provides information on each option and examples for some of the most useful ones.
Checking if a file exists
One of the most commonly used tests for checking on files is if [ -f filename ]. This test will result in true if the file exists and is a regular file—not a directory or a symbolic link. You might use it like this:
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