Delete the previous entry in your history

alias histdel='history -d $((HISTCMD-2)) && history -d $((HISTCMD-1))'
I rarely need this, but I have a hard time remembering the command when I need it. Admit it. This has happened to you. Yes this is bad, and you better clean up now. Borrowed from
Sample Output
$ ssh m
ssh: Could not resolve hostname nodename nor servname provided, or not known
$ hackm3!

# (Oh crap. I just typed the password on the commandline)
$ history |tail
  504  ssh m
  505  hackm3!

# Now it's clear. 
$ histdel; histdel
  503  ssh m
  504  history |tail

2010-07-02 00:20:44

What Others Think

Very interesting. There is a way to simplify it, though. First alter the alias to only delete one entry: alias histdel='history -d $((HISTCMD-1))' Now the clever bit. Add 'histdel' the the list of commands that are ignored by the history: export HISTIGNORE=$HISTIGNORE:hd This means histdel doesn't need to delete itself from the history and you can still run it as many times as you like. Note: I also have aliases to show my history, which don't add to the history.
flatcap · 578 weeks and 6 days ago
@flatcap: Very good. I think I like yours better. You should post that as an alternative.
StefanLasiewski · 578 weeks and 6 days ago
flatcap yours is better *thumbs up*
techie · 439 weeks and 6 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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