Linux to empty user login record and command history method sharing

[Root@localhost root]# echo >/var/log/wtmp This file is turned on by default when it's garbled, and you can see IP and so on.

[Root@localhost root]# Echo >/var/log/wtmp

[Root@localhost root]# last

The user logon information is not visible at this time

Clears the log of the login system failure, which is the record that the LASTB command sees.

[Root@localhost root]# echo >/var/log/btmp This file is open by default when it is garbled

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

[Root@localhost root]# Lastb

There's no output at this point.

Clear History Execution Command

[Root@localhost root]# History-c

Or, empty the file in the user's directory

[Root@localhost root]# echo >/.bash_history