if -z in bash
The -z flag causes test to check whether a string is empty.
Returns true if the string is empty, false if it contains something.if -z in bash
The -z flag causes test to check whether a string is empty.
Returns true if the string is empty, false if it contains something.shell if "-z"
# Returns true if string empty.
# E.G: file.txt does not exist
EXISTS=$(cat file.txt 2> /dev/null)
if [ -z "${EXISTS}" ]; then
echo "Does not exist"
else
echo "Exist!"
fi
# Output:
# Does not existCopyright © 2021 Codeinu
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