pwd in Linux means a common command in Linux. It is a command commonly used by Linux system administrators and ordinary users. It can help users quickly find the current directory and facilitate users to better manage files and directories. It can also help administrators and users quickly locate certain directories or files to better manage Linux systems.
The operating environment of this article: Linux 5.18.14 system, DELL G3 computer.
1. What is Linux PWD?
Linux PWD is a commonly used Linux command. It is used to display your current working path. It is a commonly used command by Linux system administrators and ordinary users. It can help users quickly find the directory they are currently in, allowing users to better manage files and directories. It can also help administrators and users quickly locate certain specific directories or files to better manage the Linux system.
2. How to use Linux PWD
The use of Linux PWD is very simple. Just open the Linux terminal and enter the command "pwd", for example: enter " pwd", the terminal will display the user's current working path, for example: "/home/user1", which means that the user is currently under the directory /home/user1.
3. Other uses of Linux PWD
In addition to the usage methods introduced above, Linux PWD can also be used with other commands, so that you can better obtain The full path of the current directory, for example: "pwd -P", so that the real path of the current working path can be obtained. Even if the current working path is pointed to by a soft link, the real path can also be obtained.
4. pwd command syntax
pwd [选项]
-L: --logical, displays the current path, when there is a connection file, directly displays the path of the connection file, (not This method is used by default when adding parameters), refer to Example 1.
-p: --physical, displays the current path. When there is a connection file, the connection path is not used and the file pointed to by the connection file is directly displayed. Refer to Example 2. When a multi-layer connection file is included, the file ultimately pointed to by the connection file is displayed. Refer to Example 3.
--help: Display help information.
--version: Display version information.
pwd command example
Example 1: View the current path
[root@localhost ~]# whoami root [root@localhost ~]# pwd /root
whoami command is used to determine the currently logged in user, which will be introduced in detail later. As you can see, the current directory of the root user is its home directory /root.
Example 2:
[demo@localhost ~]# whoami demo [demo@localhost ~]# pwd /home/demo
The above code shows that the user demo is currently logged in to the Linux system, and the current directory is demo’s home directory /home/demo.
Note that in [demo@localhost ~]#, although the current directory is also displayed (for example, ~ represents the home directory), only the last one in the entire path is listed here. Directory, for example:
[root@localhost ~]# cd /var/mail [root@localhost mail]# pwd /var/mail
We know that directory names can be repeated in different directories. Therefore, it is impossible to determine its specific location only through the mail in [root@localhost mail]. Use the pwd command to output the full path of the current directory.
Example 3: View the current path without using the connection path
[root@localhost ~]# cd /var/ #进入/var目录，该目录下有个mail连接文件，方便对比查看 [root@localhost var]# ll total 164 ... drwxr-xr-x 12 root root 4096 Apr 22 19:56 log lrwxrwxrwx 1 root root 10 Oct 17 2015 mail -> spool/mail drwxr-xr-x 2 root root 4096 May 11 2011 nis ... [root@localhost var]# cd mail/ #进入mail目录，mail为连接文件。 [root@localhost mail]# pwd #默认，使用连接文件，直接显示连接文件全路径。 /var/mail [root@localhost mail]# pwd -P #不使用逻辑路径，连接文件最终指向的文件 /var/spool/mail
Example 4: When connecting files at multiple levels, display the full path of the file that all connected files ultimately point to
[root@localhost ~]# ll # /root目录下面有个dir1目录，test连接文件指向dir1目录 total 12 drwxr-xr-x 2 root root 4096 Apr 24 05:51 dir1 lrwxrwxrwx 1 root root 5 Apr 24 05:54 test -> dir1/ [root@localhost ~]# ll /home/ #/home目录下面有一个test连接文件，指向/root/test连接文件 total 20 drwx------ 16 sgl sgl 4096 Oct 17 2015 sgl lrwxrwxrwx 1 root root 10 Apr 24 05:55 test -> /root/test [root@localhost ~]# cd /home/test/ #通过cd命令进入/home/test [root@localhost test]# pwd #默认，只显示连接文件的全路径 /home/test [root@localhost test]# pwd -P # 显示连接文件最终指向的文件的全路径。注意这里不是/root/test。 /root/dir1
Extended information:
In addition, Linux PWD can also be used with other parameters, such as "-L", which will display the real path pointed to by the soft link of the current working path; "-P" will display the current working path The real path of the path, even if the current working path is pointed to by a soft link, the real path can be obtained.
In short, Linux PWD is a very useful Linux command. It can help users and administrators quickly obtain the current working path. It can also be used with other parameters to better manage the Linux system. Therefore, Linux PWD can also be said to be one of the basic skills of Linux system management and an indispensable Linux command for us.
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