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Revision as of 08:58, 14 March 2012 by Ecloud (Talk | contribs)

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  • Hate it when I can't find a useful command which was last executed too long ago and has "expired" from bash history
  • bash history is too cluttered with commands from all over the whole system; I want a per-project history (project == directory, usually)
  • but, I still want a global time-ordered history too (at least approximately)

There is a partial solution here upon which this is based.


  • redefine "cd" to save per-directory history inside the directory itself, and also append that to an ever-expanding ~/.bash_history
  • replace in-memory history with the one from the CWD so that control-R searches don't find irrelevant commands
  • redefine "history" to get the global history so that I can do comprehensive history | grep searches
  • add a "chistory" command to get CWD-specific history only

If want to try it, stick this in your ~/.bashrc (and smoke it, or something):

# per-directory history
shopt -s histappend  # always append to history, don't replace
alias cd="cd_with_local_history"
alias chistory="builtin history"
alias history="cat $HOME/.bash_history"
function cd_with_local_history()
export HISTFILE="$PWD/.bash_cwd_history"
history -w # write the local history file 
cat $HOME/.bash_history .bash_cwd_history | uniq > .bash_cat_history
mv .bash_cat_history $HOME/.bash_history
builtin cd "$@" # do actual cd
export HISTFILE="$PWD/.bash_cwd_history"
history -c # clear memory
history -r #read from current histfile