脚本是:
USERNAME=tsit if id -u ${USERNAME} >/dev/null 2>&1 ; then echo "User ${USERNAME} exists." else echo "User ${USERNAME} does not exist!" fi
脚本是:
USERNAME=tsit if id -u ${USERNAME} >/dev/null 2>&1 ; then echo "User ${USERNAME} exists." else echo "User ${USERNAME} does not exist!" fi