bash history: saving to and restoring from different file

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Article #4021

#4021

From: S P Arif Sahari Wibowo
Date: Sat, 20 Sep 2008 05:44

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Hi!

Is there a way for an interactive bash invocation to restore 
history from file A, but later save / append to file B?

As for the motivation, it is to reduce duplicate in restored 
history, therefore can fit more lines in the history without 
increasing memory per bash invocation. Yes there is erasedups 
HISTCONTROL option but it does not help removing duplicate 
caused by multiple bash invocation. If the file to restore from 
and file to save to can be different, I can create short script 
to filter out the duplicate from the history file and save it in 
different file. The bash invocation then restore history from 
the filtered file but later still save / append added history to 
the original history file.

Thanks!

-- 
                              (stephan paul) Arif Sahari Wibowo
    _____  _____  _____  _____
   /____  /____/ /____/ /____
  _____/ /      /    / _____/      http://www.arifsaha.com/

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From: S P Arif Sahari Wibowo <arifsaha@yahoo.com>
Newsgroups: comp.unix.shell,gnu.bash
Subject: bash history: saving to and restoring from different file
Date: Sat, 20 Sep 2008 01:44:59 -0400
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