Sorting the command history of a shell

[tech291083]

Hi,

How can I delete the same command in the command history and make the database show each command only once? Thanks...

[pam]

If all you care about is the commands and not the order they were typed in, you could do this:

sort .bash_history | uniq

Anything more complicated that preserves the sequence of events would require a shell script that weeds out those commands that have previously occured.