On 5/18/2011 12:02 PM, Bowie Bailey wrote:
> On 5/18/2011 12:58 PM, Les Mikesell wrote:
>> On 5/18/2011 11:33 AM, Bowie Bailey wrote:
>>> On 5/18/2011 11:34 AM, Michael Gliwinski wrote:
>>>> Note that there's also a shortcut for cat (without launching a subprocess):
>>>>
>>>> $ vim $(< listfile)
>>> That's one of those occasionally-useful tidbits that I will have
>>> completely forgotten about by the time I need to use it again! :-)
>> Don't think of it as a special case. It is a combination of two
>> generically useful simple operations. Unix, the shell, and vi are all
>> about being able to reuse and combine simple steps instead of
>> special-casing everything.
>
> Right. I was referring to the shell shortcut "$(< filename)". Simple -
> Useful - and probably forgotten by the time I need it again.
That's the same thing I meant. It is $(command) which is the same as
`command` where the output of the command replaces it on the command
line before further evaluation. That's something you can use
frequently. And '< filename' to control i/o redirection is something
you can use even more frequently. So it's like doing '20i- <esc>'
inside of vi to insert a dashed line. You don't have to know
specifically that you can give a count with the insert command, you just
know you can combine a count with any command.
--
Les Mikesell
lesmikesell@xxxxxxxxx
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