Linux server empties MySQL history history delete MySQL operations record _mysql

1. No longer save historical records or reduce the number of historical records saved

Modify/etc/profile to change histsize=1000 to 0 or quantity to keep
Clears the. Bash_history under the user's home path.

Copy Code code as follows:

Echo ' >/home/user/.bash_history

2. Immediately empty the history record of the current history command

Copy Code code as follows:

History-c

Of course, if you want the currently executing command to be written to the history immediately, you can perform

Copy Code code as follows:

History-w

Otherwise, you will only have to wait until you exit bash to write. Because during bash use, these are stored in the current buffer.

If you are a MySQL user, there will be a. mysql_history file in the user directory that holds the SQL statement executed under the MySQL command line. Empty use

Copy Code code as follows:

Echo ' >/home/user/.mysql_history