4 ms·
if [ x$(grep not_there /dev/null) = 'x' ] See now, I never get why people do this. -z has existed forever.
by earenndil 9y ago
if [ x$(grep not_there /dev/null) = 'x' ]
See now, I never get why people do this. -z has existed forever.
- cjhanks 9y agoBecause it's acronym is very unclear. I think it stands for "zero", but I am not sure.