howto: shell setup and commands         rev 26 jun 2018


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howtos:

  * ignore duplicates in command history
      export HISTCONTROL=ignoredups

      ignorespace:ignoredups
      or 
      ignoreboth. 

      ignorespace 
         for executing commands that you don't want to record in your command history.

  * Eliminate duplicates across the whole history
        export HISTCONTROL=erasedups 

  * Don't record some commands in history
        export HISTIGNORE="pwd:ls:ls -ltr:"


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resources

    * https://www.linuxjournal.com/content/using-bash-history-more-efficiently-histcontrol
    * https://www.thegeekstuff.com/2008/08/15-examples-to-master-linux-command-line-history/
        other good articles listed at end of page.


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since: 26 jun 2018
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