清除Centos系統用戶登陸記錄和命令記錄

1 2	echo>/var/log/wtmp#清除用戶登陸記錄和命令記錄 [root @localhost root]# last //此時即查不到用戶登陸信息

1 2	echo>/var/log/btmp [root @localhost root]# lastb //查不到登錄失敗信息

1	echo>/var/log/secure #若是沒有這個文件，重啓syslog進程service syslog restart

清除歷史命令

1 2	cd/root/ echo> .bash_history

或者

1	history-c #清除命令記錄

也能夠寫個shell腳本，一鍵清除全部的日誌

1 2 3 4 5 6 7 8 9 10 11 12 13

#!/bin/sh cat/dev/null>/var/log/syslog cat/dev/null>/var/adm/sylog cat/dev/null>/var/log/wtmp cat/dev/null>/var/log/maillog cat/dev/null>/var/log/messages cat/dev/null>/var/log/openwebmail.log cat/dev/null>/var/log/maillog cat/dev/null>/var/log/secure cat/dev/null>/var/log/httpd/error_log cat/dev/null>/var/log/httpd/ssl_error_log cat/dev/null>/var/log/httpd/ssl_request_log cat/dev/null>/var/log/httpd/ssl_access_log