linux命令(ls ,cd,pwd)

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1,ls 命令 
ls用来打印出当前目录的清单
ls -l/-h/-a
-h 人性化显示
-a 连同隐藏文件都显示出
-F 可执行文件特殊显示带上*

[[email protected] test4]$ ls file file1 folder folder2 folder3 [[email protected] test4]$ touch .haha [[email protected] test4]$ ls file file1 folder folder2 folder3
[[email protected] test4]$ ls -a
.  ..  file  file1  folder  folder2  folder3  .haha [[email protected] test4]$ ls
-lh total 12K -rw-r--r-- 1 ligang trainning 0 Mar 8 05:28 file -rw-r--r-- 1 ligang trainning 0 Mar 8 05:29 file1 drwxr-xr-x 2 ligang trainning 4.0K Mar 8 05:29 folder drwxr-xr-x 2 ligang trainning 4.0K Mar 8 05:30 folder2 drwxr-xr-x 2 ligang trainning 4.0K Mar 8 05:29 folder3 [[email protected] test4]$ ls -la total 20 drwxr-xr-x 5 ligang trainning 4096 Mar 8 06:08 . drwx------ 15 ligang trainning 4096 Mar 8 04:41 .. -rw-r--r-- 1 ligang trainning 0 Mar 8 05:28 file -rw-r--r-- 1 ligang trainning 0 Mar 8 05:29 file1 drwxr-xr-x 2 ligang trainning 4096 Mar 8 05:29 folder drwxr-xr-x 2 ligang trainning 4096 Mar 8 05:30 folder2 drwxr-xr-x 2 ligang trainning 4096 Mar 8 05:29 folder3 -rw-r--r-- 1 ligang trainning 0 Mar 8 06:08 .haha [[email protected] test4]$ ls -lah total 20K drwxr-xr-x 5 ligang trainning 4.0K Mar 8 06:08 . drwx------ 15 ligang trainning 4.0K Mar 8 04:41 .. -rw-r--r-- 1 ligang trainning 0 Mar 8 05:28 file -rw-r--r-- 1 ligang trainning 0 Mar 8 05:29 file1 drwxr-xr-x 2 ligang trainning 4.0K Mar 8 05:29 folder drwxr-xr-x 2 ligang trainning 4.0K Mar 8 05:30 folder2 drwxr-xr-x 2 ligang trainning 4.0K Mar 8 05:29 folder3 -rw-r--r-- 1 ligang trainning 0 Mar 8 06:08 .haha

2,dir  切换当前目录至dirName

cd/cd~    回到用户主目录
cd /  进入系统根目录
cd - 返回进入此目录之前所在目录
[[email protected] test4]$ cd /
[[email protected] /]$ cd
[[email protected] ~]$ 
[[email protected] soft]# pwd
/opt/soft
[[email protected] soft]# cd -
/root
[[email protected] ~]# pwd
/root
[[email protected] ~]# cd -
/opt/soft
[[email protected] soft]#
3,pwd  pwd 命令来查看”当前工作目录“的完整路径
pwd显示的是连接路径
pwd -P  显示出实际路径
/bin/pwd 选项
[[email protected] init.d]$ pwd
/etc/init.d
[[email protected] init.d]$ /bin/pwd
/etc/rc.d/init.d
[[email protected] init.d]$ pwd
/etc/init.d
[[email protected] init.d]$ pwd -L
/etc/init.d
[[email protected] init.d]$ pwd -P
/etc/rc.d/init.d

 

 




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