history meme
things I use:
quicksilver:~ $ history | awk '{print $2}' | sort | uniq -c | sort -rnk1,1 | head -n 20
244 hg
48 cd
35 nmap
34 ls
15 sudo
14 vim
13 pwd
9 man
9 clear
8 rm
7 find
6 cp
5 ssh
5 ps
4 python
4 less
4 history
3 whois
3 kill
2 wget
