Bash-技巧

持续更新 Bash 小技巧

• 检测程序是否已安装

#!/bin/bash
check_software(){
    local software=(vim git tmux npm)   # 待测程序名
    for soft in ${software[@]}
    do
        type $soft 2>&1 > /dev/null     # 已安装，则返回零
        if [ $? -ne 0 ]; then
            echo "ERROR: **$soft** is not installed!"
            exit 1
        fi
        echo "Checking $soft...ok!"
    done
}

check_software

运行结果
bash check_software.sh
Checking vim...ok!
Checking git...ok!
Checking tmux...ok!
Checking npm...ok!