* backquote poser
@ 1993-03-09 11:32 John Mackin
1993-03-09 12:13 ` mycroft
0 siblings, 1 reply; 3+ messages in thread
From: John Mackin @ 1993-03-09 11:32 UTC (permalink / raw)
To: The rc Mailing List
I was just writing an rc script where I wanted to assign a variable
the value of the output of the "domainname" command. This command
might not be present on the system the script is being run on; if not,
I wanted the variable assigned the null list, and for no error message
about domainname not being found to be echoed onto the script's
standard error. The best thing I could come up with was:
domain = ` { exec >[2] /dev/null; domainname }
Anyone got a cleaner idea? For some reason it seems to me it should
be able to be done more neatly. I guess I mainly don't like needing
a semicolon.
OK,
John.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: backquote poser
1993-03-09 11:32 backquote poser John Mackin
@ 1993-03-09 12:13 ` mycroft
0 siblings, 0 replies; 3+ messages in thread
From: mycroft @ 1993-03-09 12:13 UTC (permalink / raw)
To: rc
> domain = ` { exec >[2] /dev/null; domainname }
>
> Anyone got a cleaner idea? For some reason it seems to me it should
> be able to be done more neatly. I guess I mainly don't like needing
> a semicolon.
Snippets from my .rcrc:
EDITOR=`{which vi >[2] /dev/null || echo /usr/ucb/vi}
PAGER=`{which less >[2] /dev/null || which more >[2] /dev/null}
UNSHAR=`{which unshar >[2] /dev/null || echo /bin/sh}
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: backquote poser
@ 1993-03-09 12:28 Icarus Sparry
0 siblings, 0 replies; 3+ messages in thread
From: Icarus Sparry @ 1993-03-09 12:28 UTC (permalink / raw)
To: John; +Cc: The rc Mailing List
domain = `{ {domainname} >[2] /dev/null }
^ Actually I think an '@' should be needed here, but it appears
that one is optional.
^ permalink raw reply [flat|nested] 3+ messages in thread
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1993-03-09 11:32 backquote poser John Mackin
1993-03-09 12:13 ` mycroft
1993-03-09 12:28 Icarus Sparry
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