People Kept Complaining This Restaurant Sucked; Look What They Found Out
themetapicture.com3 ポイント投稿者 isivaxa1 コメント
#!/bin/bash
tty
if [[ $? -ne 0 ]] ; then
# command returned nonzero
echo "not a tty"
else
# command returned zero
n=$?
((n=$n+2))
((n=$n+2))
echo "0+2+2=$n";
fi