Focus: Summary of common Xshell running commands under Linux systems

First of all, we have to start with the simplest thing. After we enter the Xshell interface, we connect to the Linux server. When we first entered, we didn’t know what files we had. At this time, we can use the ls command to display the files we have. Which files, or use ls -l, the easiest is ll. The ls command will display the file horizontally, which is uncomfortable to look at. ll and ls -l have the same effect. It is recommended to use ll because it is the simplest

After we already know what the files are, we need to know how to enter the file we want to enter. In a graphical system like Windows, we can use double-click to open the file we need to open. In Xshell, we need to use The command is: cd command. After we enter, the following pages are displayed. At this time, the default is under the root node root:

If we need to enter the local file of the usr file now, we need to use: cd /usr/local to enter. At this time, we will show that we have entered the local file. It should be noted that under the root root When entering other files in the directory, you need to add a slash "/" at the front. In any other two-level or even multi-level directories, you can enter directly without adding it.

Once you enter, you will return. When you need to return, we need to use: cd ../ this command. Similarly, we can also add the superior file directory we need to enter after ../ to enter directly

The next step is how to edit files and view files. If the host.xml file currently exists in the local directory, we need to edit or view it. The command to view is cat host.xml; the command to edit is vi host.xml, then press i to enter the modification mode, otherwise just look. If we suddenly don’t want to modify, press ESC and write in the command line :q! Then press enter and touch edit. If we need to save after editing, we also need to press ESC, then enter :wq and press enter.

To summarize: edit the file vi, press i to edit, save and end editing ESC:wq Enter, end editing without saving ESC:q! Enter

To execute files under the Linux system, we need to use ./filename.sh. If we need to execute the host.sh file, we need to enter the directory where the file is located and execute it

The above command may cause insufficient permissions. Finally, let me tell you about an authorization command. If we want to authorize all .sh files under this file, we can write: chmod u+x *.sh Authorize the sh file. Of course, we can also replace * with a specific file name, depending on the need:

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