我有一个包含以下内容的脚本:
login {
# checking parameters -> if not ok print error and exit script
if [ $# -lt 2 ] || [ $1 == '' ] || [ $2 == '' ]; then
echo "Please check the needed options (username and password)"
echo ""
echo "For further Information see Section 13"
echo ""
echo "Press any key to exit"
read
exit
fi
} # /login
但是我真的不知道第三行中的$#
是什么意思。