Shell scripting: -z and -n options with if - Unix & Linux Stack Exchange

Shell scripting: -z and -n options with if - Unix & Linux Stack Exchange

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日期:2026-04-17
16 Jan 2014 ... I have a shell script where we have following lines if [ -z "$xyz" ] and if [ -n "$abc" ] , but I am not sure what their purpose is. Can anyone please ......看更多