[emesa@mario ~]$ uname -a Linux mario.mushroomkingdom 2.6.24.5-85.fc8 #1 SMP Sat Apr 19 12:39:34 EDT 2008 i686 athlon i386 GNU/Linux [emesa@mario ~]$ history | awk ‘{a[$2]++}END{for(i in a){print a[i] " " i}}’ | sort -rn | head 176 ls 172 eog 81 ./makeSpiral.pl 80 cd 61 ./makefibonaccicollage.pl 58 mplayer 51 ./makePolar.pl 36 mv 28 flickr_views.py 24 exit

and root:

[root@mario ~]# history | awk ‘{a[$2]++}END{for(i in a){print a[i] " " i}}’ | sort -rn | head 193 ls 127 cd 102 exit 87 mount 77 yum 71 history 43 emacs 35 cat 20 rm 16 ifconfig Notes: