How to clear historical command prompts in Linux

How to clear historical command prompts in Linux: 1. Clear the current user’s historical commands and use the “history -c” command to clear all historical command records entered by the current user in the current session; 2. Clear the historical command files , use the "> ~/.bash_history" command to clear all records in the history command file.

The operating environment of this tutorial: linux5.18.14 system, Dell G3 computer.

Linux method of clearing historical command prompts

In Linux systems, you can use the following steps to clear historical commands:

[1]Clear the current user History commands:

You can use the following command to clear the history command records of the current user:

history -c

This will clear all history command records entered by the current user in the current session.

【2】Clear historical command files:

The Linux system will save the user’s historical command records in a file, usually ~/.bash_history .

You can use the following command to clear the records in the historical command file:

> ~/.bash_history

This will clear all records in the historical command file.

Linux Clear History Command Notes:

(1) After clearing the history command, the deleted command record cannot be recovered, so please operate with caution.

(2) The clear history command will only delete the saved history and will not affect the command history in the currently running terminal window.

(3) If you want to disable the command history function, you can set it in the user's ~/.bashrc file or the system's /etc/bash.bashrc file HISTSIZE and HISTFILESIZE variables are 0, or add the command unset HISTFILE to the ~/.bashrc file.

(4) Clearing historical command records may have an impact on system security, because historical command records are usually used for auditing and investigation purposes. When performing the clear history command operation, be sure to follow system administration policies and security best practices.

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