Linux的常用命令

Linux的命令

1.命令学习法

• Linux命令与参数之间必须用空格隔开

• Linux命令是区分大小写的

• 如果输入了错误的命令

  • -bash: abcd:command not found

  • 命令敲错了

  • 命令未安装

    [root@C7-saber ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33 //vi 命令后加空格
    [root@C7-saber ~]# vi/etc/sysconfig/network-scripts/ifcfg-ens33 //命令后未加空格，所以显示错误
    -bash: vi/etc/sysconfig/network-scripts/ifcfg-ens33: No such file or directory
    --------------------------------------------------------------------------------------------------
    [root@C7-saber ~]# LL
    -bash: LL: command not found // 命令区分大小写，命令未找到
    --------------------------------------------------------------------------------------------------
    

• type 命令的类型

  • cd is a shell builti

  • ping is /bin/ping

  • II is aliased to ‘Is -I --color=