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Currently I am using $HISTIGNORE to ignore some commands and not save them in bash history. But current behaviour is if I am running a terminal I executed a command which is in $HISTIGNORE then on hitting up arrow it takes me to last saved command but I want to have these ignored commands available in current session and delete them only after the session is closed.

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You can use sed to delete lines from your ~/.bash_history file, e.g.

sed -i -e '/ apt /d' -e '/^xterm/d' ~/.bash_history

to delete every line containing “ apt ” and every line beginning with “xterm”.

If you want to perform the deletion every time you open a new terminal, add the sed line to your ~/.bashrc file. You can also use cron (crontab -e) to automate the cleanup, e.g. with the line

@hourly sed -i -e '/ apt /d' -e '/^xterm/d' ~/.bash_history

to perform the cleanup hourly.

  • Thanks man its really helpful but, Can I do the deletion of lines when terminal is killed and only for the commands typed in current session of terminal? – ksmukta Sep 17 '17 at 5:10
  • @ksmukta I searched for a way to delete the lines automatically when a terminal is closed, but I couldn't find anything useful in this case. You can do the deletion whenever you want and it will delete all matched lines in the file – what's the use of restrict it to the current session's commands? – dessert Sep 17 '17 at 5:31
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    @ksmukta You may find the Bash History Builtins chapter of the Bash Reference Manual interesting. – dessert Sep 17 '17 at 6:26

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