Top 10 used commands
After reading sdog's last blog entry with the same title as this one, I'd try the same command on my laptop.
Here is the result of
history|awk '{print $2}'|awk 'BEGIN {FS="|"} {print $1}'|sort|uniq -c|sort -rn|head -10 132 ssh 84 exit 52 su 35 telnet 32 cd 25 ls 19 grep 15 man 13 scp 13 ping