linux中cd命令使用详解,linuxcd使用详解
linux中cd命令使用详解,linuxcd使用详解
Linux cd 命令可以说是Linux中最基本的命令语句,其他的命令语句要进行操作,都是建立在使用 cd 命令上的。
所以,学习Linux 常用命令,首先就要学好 cd 命令的使用方法技巧。
1. 命令格式:
cd [目录名]
2. 命令功能:
切换当前目录至dirName
3. 常用范例
3.1 例一:进入系统根目录
命令:
cd /
输出:
[root@localhost ~]# cd /
说明:进入系统根目录,上面命令执行完后拿ls命令看一下,当前目录已经到系统根目录了
命令:
cd .. 或者 cd .. //
输出:
复制代码 代码如下:
[root@localhost soft]# pwd
/opt/soft
[root@localhost soft]# cd ..
[root@localhost opt]# cd ..//
[root@localhost /]# pwd
/
说明:
进入系统根目录可以使用“ cd .. ”一直退,就可以到达根目录
命令:
cd ../.. //
输出:
复制代码 代码如下:
[root@localhost soft]# pwd
/opt/soft
[root@localhost soft]# cd ../.. //
[root@localhost /]# pwd
/
[root@localhost /]#
说明:使用cd 命令实现进入当前目录的父目录的父目录。
例2:使用 cd 命令进入当前用户主目录
“当前用户主目录”和“系统根目录”是两个不同的概念。进入当前用户主目录有两个方法。
命令1:
cd
输出:
复制代码 代码如下:
[root@localhost soft]# pwd
/opt/soft
[root@localhost soft]# cd
[root@localhost ~]# pwd
/root
命令2:
cd ~
输出:
复制代码 代码如下:
[root@localhost ~]# cd /opt/soft/
[root@localhost soft]# pwd
/opt/soft
[root@localhost soft]# cd ~
[root@localhost ~]# pwd
/root
例3:跳转到指定目录
命令:
cd /opt/soft
输出:
复制代码 代码如下:
[root@localhost ~]# cd /opt/soft
[root@localhost soft]# pwd
/opt/soft
[root@localhost soft]# cd jdk1.6.0_16/
[root@localhost jdk1.6.0_16]# pwd
/opt/soft/jdk1.6.0_16
[root@localhost jdk1.6.0_16]#
说明:
跳转到指定目录,从根目录开始,目录名称前加 / ,当前目录内的子目录直接写名称即可
例四:返回进入此目录之前所在的目录
命令:
cd -
输出:
复制代码 代码如下:
[root@localhost soft]# pwd
/opt/soft
[root@localhost soft]# cd -
/root
[root@localhost ~]# pwd
/root
[root@localhost ~]# cd -
/opt/soft
[root@localhost soft]#
例五:把上个命令的参数作为cd参数使用。
命令:
cd !$
输出:
复制代码 代码如下:
[root@localhost soft]# cd !$
cd -
/root
[root@localhost ~]# cd !$
cd -
/opt/soft
[root@localhost soft]#

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