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Editor to share with you about linux view history command syntax, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to understand it!

Linux View History command

In Linux, the history of bash input will be stored in the .bash _ history file. The history command is mainly used to display the contents of the historical instructions and issue the instructions in the historical records.

Use: first open Terminal (terminal); then type history and hit enter; the screen will display 1000 historical commands.

Command syntax:

History [n] history [- c] history [- raw] histfiles

Parameters:

N: number, to list the most recent n commands-c: eliminate all the history contents in the current shell-a: add the newly added history instructions to the histfiles, if there is no histfiles, then the default write ~ / .bash_history-r: read the contents of the histfiles into the history memory of the current shell-w: write the current history memory to the histfiles.

Common commands:

History N displays the most recent N commands, such as the history 5 history-d N delete section N command, which is the previous number For example, history-d 990 history-c empties the command history history-a writes the command history in the current session to the specified file echo $HISTFILE use this command to view the environment variable # echo $HISTFILE / root/.bash_historyecho $HISTFILESIZE to view the maximum number of saves export HISTTIMEFORMAT='%F% T'so that history can have a time stamp to show all the contents of the historical command syntax in linux, thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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