From: Morton Goldberg <m_goldberg@...>
Date: 2006-08-10T09:23:21+09:00
Subject: Re: access built-in shell commands like 'history' or 'fc'

Why not access them by reading the file ~/.bash-history?

Regards, Morton

On Aug 9, 2006, at 3:30 PM, bwv549 wrote:

> How do I access built-in shell commands (like 'history' or 'fc')  
> with a
> system call?
>
> Not what I was expecting:
>   % ruby -e 'puts `history`'
>       -e:1: command not found: history
>
> But this works fine:
>
>   % ruby -e 'puts `pwd`'
>       /home/john
>
> I've tried this:
>
>   % ruby -e 'system "history >tmp.tmp"; puts IO.read("tmp.tmp")'
>
> And no errors are generated, but there is nothing in tmp.tmp, either.
>
> Thanks
>
>