On Fri, 16 Mar 2001, Caolan McNamara wrote:
> For my sins I work a little with 4nt under nt on occasion and
> it has a history feature that 50% of the time drives me crazy
> and 50% of the time is quite handy. All running copies share
> the same history buffer. Type a command in a window and
> it appears as the last command in all windows history.
>> Probably wouldn't be too hard to add it to bash/tcsh with a
> bit of ipc jiggerypokery.
>> tcsh has a merge facility which when the various shells exit
> then the histories are merged and sorted according to timestamp,
> and bash has an append facility which sounds similiar. But of
> course this only happens at exit time not during execution.
> Does it sound useful to have a single shared history file
> during execution of multiple shells ? I'm of two minds, but
> could be a fun option to play with.
Zsh will do this (and ksh as Jerry Connolly has mentioned). usually
find this annoying I don't use it. You can enable it by putting the
following commands into your ~/.zshrc:
setopt sharehistory # Enable shared history between shells
HISTFILE=~/.zsh_history # The file for storing history events
SAVEHIST=100 # The max number of events saved in $HISTFILE
HISTSIZE=100 # The max number of events saved in the
# internal history list.
There's also a bunch of options for controlling what gets added to the
history list. You can get a description of them by searching for 'hist'
in the zshoptions manpage.
John Gaughan, Systems Administrator
Irish Times New Media - http://www.ireland.com/
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