Instantly load bash history of one shell into another running shell

$ history -a #in one shell , and $ history -r #in another running shell
By default bash history of a shell is appended (appended on Ubuntu by default: Look for 'shopt -s histappend' in ~/.bashrc) to history file only after that shell exits. Although after having written to the history file, other running shells do *not* inherit that history - only newly launched shells do. This pair of commands alleviate that.
Sample Output
## In shell one ##

$ find -iname "*pdf*"   
<some output>

$ history -a   #You don't need this if you set PROMPT_COMMAND="history -a;$PROMPT_COMMAND" manually or in your ~/.profile or ~/.bashrc

## Switch to another running shell ##

$ #Up arrow does not show the above 'find' command, so do following:
$ history -r
$ find -iname "*pdf*"   #Up arrow now shows the 'find' command

By: b_t
2011-11-05 01:19:30

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Antonioomez · 69 weeks and 4 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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