[TUHS] Shell control through external commands

Dave Horsfall dave at horsfall.org
Fri Jul 15 08:36:56 AEST 2016


On Thu, 14 Jul 2016, Clem Cole wrote:

> Could you be confusing the fact the true and false were implemented by
> external commands in some early shell's

And on the Mac and FreeBSD, they still are (as well as being builtins).

At one time they were shell scripts e.g. "exit 0" for "true".

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."


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