How do i clear all last login history?

try this command

history -c

sorry wrong command

any idea?

Run the command: >/var/log/wtmp
man last

#rm -f /var/log/wtmp && touch /var/log/wtmp
#chown root.utmp /var/log/wtmp && chmod 664 /var/log/wtmp

2 members found this post helpful.

Display last login information
$ lastlog

Output
Username Port From Latest
root tty1 Thu Jan 25 15:23:50 +0530 2007
daemon **Never logged in**
bin **Never logged in**
sys **Never logged in**
sync **Never logged in**
vivek tty1 Sat Jan 27 22:10:36 +0530 2007
pdnsd **Never logged in**
sshd **Never logged in**
messagebus **Never logged in**
bind **Never logged in**
sweta tty1 Sat Jan 27 19:55:22 +0530 2007


To Clear last login information Simply overwrite /var/log/lastlog file. You must be the root user. First make a backup of /var/log/lastlog:
# cp /var/log/lastlog /root

Now overwrite file using any one of the following command:
# >/var/log/lastlog

OR
# cat > /var/log/lastlog
Press CTR+D

OR
# vi /var/log/lastlog
delete the contents of file and
# :wq

Interesting; the chown man page has chown [OPTION]... [OWNER][:[GROUP]] FILE... but chown root.utmp <some file> works just fine.

Sorry to interrupt, but this post has just been posted but already has more than 20000 views! Is it a bug in my web browser?

No, it's a Lazarus job -- the thread was started in 2005.

Oh, I see. I should have looked at the date more carefully.