🚀 go-pugleaf

On 2008-09-20, S P Arif Sahari Wibowo wrote:
>
> 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.

hfile1=.bash_history
hfile2=.bash_history2

In your ~/.bashrc:

history -c -r "$hfile1"
history "$hfile2"


-- 
   Chris F.A. Johnson, author       <http://cfaj.freeshell.org/shell/>
   Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress)
   ===== My code in this post, if any, assumes the POSIX locale
   ===== and is released under the GNU General Public Licence