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In order to solve the problem of how to clear user login records and history commands in CentOS, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and easy way.

Clear the record of success of the login system

[root@localhost root] # echo > / var/log/wtmp / / this file is opened with garbled codes by default, and information such as ip can be found.

[root@localhost root] # last / / user login information is not found at this time

Clear the record of the failure of the login system

[root@localhost root] # echo > / var/log/btmp / / this file is opened with garbled codes by default, and the login failure information can be found.

[root@localhost root] # lastb / / No login failure information was found

Clear history execution command

[root@localhost root] # history-c / / clear history execution command

[root@localhost root] # echo >. / .bash _ history / / or empty this file in the user directory

Import empty history

[root@localhost root] # vi / root/history / / create a new record file

[root@localhost root] # history-c / / clear the record

[root@localhost root] # history-r / root/history.txt / / Import record

[root@localhost root] # history / / query the import result

Example

[root@localhost root] # vi / root/history

[root@localhost root] # history-c

[root@localhost root] # history-r / root/history.txt

[root@localhost root] # history

[root@localhost root] # echo > / var/log/wtmp

[root@localhost root] # last

[root@localhost root] # echo > / var/log/btmp

[root@localhost root] # lastb

[root@localhost root] # history-c

[root@localhost root] # echo >. / .bash _ history

[root@localhost root] # history

This is the answer to the question about how to clear user login records and historical commands in CentOS. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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