Top 10 used commands
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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