7/5/2023 0 Comments Linux test for zero byte fileMaybe if file doesn’t exist – there is no sens to move forward and it is required to break the script or whatever. We usually test if a file exists to perform some action depending on the result of the test. It goes without saying that we don’t just check whether a file exists without a reason. Test if the file /etc/bebebe does not exist ( TRUE): $ test ! -f /etc/bebebe Test if the file /etc/bebebe exist ( FALSE): $ test -f /etc/bebebe Test if the file /etc/passwd exist ( TRUE): $ test -f /etc/passwd Run one of the below commands to check whether a file exists: $ test -f FILENAME This is a job for the test command, that allows to check if file exists and what type is it.Īs only the check is done – the test command sets the exit code to 0 ( TRUE) or 1 ( FALSE), whenever the test succeeded or not.Īlso the test command has a logical “not” operator which allows to get the TRUE answer when it needs to test if file does not exist.Ĭool Tip: Create a clever bash script! Make it do more tests! Check easily whether a string exists in a file! Read more → Bash Shell: Test If File Exists While creating a bash script, it is commonly helpful to test if file exists before attempting to perform some action with it.
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