一、How to save xshell process
It is very important to save process state for subsequent recovery when running long-term tasks on remote servers. Here are several common methods for saving processes in Xshell:


1. Using Screen or Tmux tools:
Screen and Tmux are two powerful terminal multiplexing tools that allow users to create multiple terminal sessions on remote servers, and these sessions remain running even after disconnection.

- Screen usage method:

1. After connecting to the remote server, enter the 'screen' command to start the Screen session.

2. Long term tasks required to run in a Screen session.

3. To exit but keep the task running, press Ctrl+A and then D to disconnect the Screen session.

4. After reconnecting, enter the 'screen - r' command to restore the Screen session.


- Tmux usage method:

1. After connecting to the remote server, enter the 'tmux' command to start the Tmux session.

2. Long term tasks required to run in Tmux sessions.

3. To exit but keep the task running, press Ctrl+B and then D to disconnect the Tmux session.

4. After reconnecting, enter the 'tmux attach' command to restore the Tmux session.


2. Use the nohup command:
The nohup command is used to run commands in the background and make them continue to run after exiting the terminal. Nohup will redirect the output to a file.



- Usage:

1. After connecting to the remote server, enter the 'nohup command' command, where 'command' is the task command to run.

2. The task will run in the background and the output will be saved to the 'nohup. out' file.

3. Users can use the 'tail - f nohup. out' command to view task output.



3. Use the background running symbol (&):

Adding the `&` symbol after the command allows the task to run in the background, but it needs to be combined with the ` disown ` command to ensure that the task continues to run after exiting the terminal.


- Usage:

1. After connecting to the remote server, enter the 'command' command, where 'command' is the task command to run.

2.Enter the 'disown' command to separate the task from the current terminal and ensure that it continues to run after the terminal is closed.

Through the above methods, users can save process state in Xshell, ensuring that long-term tasks continue to run after disconnection.


二、How to check the PID of xshell process
 

Viewing the PID of a process is a basic operation in process management, which allows for process monitoring, termination, and other operations. Here are several methods to view process PID in Xshell:


1. Use the ps command:

The ps command is used to display information about the currently running process, including the process PID.


- Usage:

1. After connecting to the remote server, enter the 'ps aux' command to view all running processes.

2. Find the PID column of the desired process in the output list.


2. Use the pgrep command:

The pgrep command is used to query the PID of a process based on its name, simplifying the use of the ps command.

- Usage:

1. After connecting to the remote server, enter the ` pgrep process_name ` command, where ` process_name ` is the process name.

2. The output result is the PID of the corresponding process.


3. Use the pidoff command:

The pidoff command is used to obtain the PID of a specified process, similar to pgrep.

- Usage:

1. After connecting to the remote server, enter the 'pidoff process_name' command, where 'process_name' is the process name.

2. The output result is the PID of the corresponding process.


4. Use the top command:

The top command is used to display the real-time resource usage of various processes in the system, including PID information.

- Usage:

1. After connecting to the remote server, enter the 'top' command to enter the real-time monitoring interface.

2. Find the PID column of the desired process in the interface.

Through the above methods, users can easily view the PID information of processes in Xshell for effective process management.


三、Necessary settings for xshell

To improve the user experience and operational efficiency of Xshell, the following are some necessary setup suggestions:



1. Configure session and connection settings:

For the convenience of managing multiple server connections, users can configure and save sessions.

- Operation steps:

1. Open Xshell, click on the "File" menu, and select "New" session.

2. Enter the session name and remote server address, and configure the connection parameters.

3. Save the session for quick connection next time.


2. Set keyboard shortcuts:

Using shortcut keys can improve operational efficiency, and Xshell allows users to customize shortcut keys.

- Operation steps:

1. Open Xshell, click on the "Tools" menu, and select "Options".

2. In the options window, select the "Keyboard and Mouse" tab.

3. Customize shortcut keys and set common operation shortcut keys according to personal habits.


3. Enable logging:

The logging function can help users save session records for future reference and analysis.

- Operation steps:

1. Open Xshell, click on the "File" menu, and select "Session Properties".

2. In the session properties window, select the "Logs" tab.

3. Enable logging and set the path and format for saving log files.


4. Configure appearance and theme:

To enhance the user experience, users can customize the appearance and theme of Xshell.

- Operation steps:

1. Open Xshell, click on the "Tools" menu, and select "Options".

2. In the options window, select the "Appearance" tab.

3. Customize fonts, colors, and themes according to personal preferences.

Through the above settings, users can optimize the user experience of Xshell and improve the efficiency and convenience of remote terminal management.