Re: why does the shell show commands foolishly when I press UP key?

[Michelle Konzack <linux4michelle@freenet.de>]

Am 2007-11-08 23:25:02, schrieb Serena Cantor:
> I often use UP key to get commands entered previously. The shell show some commands again and
> again, just because I have used them several times. Can the shell be more smart?
> 
> I use sarge.

First of all as others already saied: HISTCONTROL=ignoredups

...and then maybe a script like:

----8<------------------------------------------------------------------
#!/bin/bash

if [ ! -f ~/.bash_history.lock ] ; then
  echo -n "Please wait, eleminating dups in the ~/.bash_history... "
  touch ~/.bash_history.lock
  if [ -f ~/.bash_history ] ; then
    touch ~/.bash_history.tmp
    (cat ~/.bash_history) |
    while read LINE
    do
      if [ -z "$(grep "${LINE}" ~/.bash_history.tmp)" ] ; then
        echo -e "${LINE}" >>~/.bash_history.tmp
      fi
    done
    mv --force ~/.bash_history.tmp ~/.bash_history
  fi
  rm --force ~/.bash_history.lock
  LINES=$(cat ~/.bash_history |wc --lines)
  echo "${LINES} lines currently."
fi
----8<------------------------------------------------------------------

Thanks, Greetings and nice Day
    Michelle Konzack
    Tamay Dogan Network
    Open Hardware Developer
    Debian GNU/Linux Consultant


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