［linux-shell］shell的case使用

➜  QA_shell cat case.sh#!/bin/bashfunction func_case(){    case $1 in    "")        echo "param is null"    ;;    "1")        echo "param is number"    ;;        "a")        echo "param is word"    ;;        "*")        echo "param is signal"    ;;    esac}func_case $2➜  QA_shell ➜  QA_shell sh case.sh 3 param is null➜  QA_shell sh case.sh a param is null➜  QA_shell sh case.sh a 1param is number