system calls
in [Unix Programming]
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From: Scott Lurndal on 26 Mar 2010 11:40 Phred Phungus <Phred(a)example.invalid> writes: >John Gordon wrote: >> In <7vl3guFs3gU1(a)mid.individual.net> Phred Phungus <Phred(a)example.invalid> writes: >> >>> fp = popen ("mv *.c backups1/.", "r"); >> >> Why are you capturing the output of the mv command? popen() does not return >> error output, only standard output. What standard output are you hoping to >> capture? >> > >Should be: > >(void) fp = popen ("mv *.c backups1/.", "r"); No. That won't even compile. use system(3) instead.
From: Seebs on 26 Mar 2010 12:43
On 2010-03-26, Rainer Weikusat <rweikusat(a)mssgmbh.com> wrote: > That some people inevitably reinvent the Gordian knot whenever given > enough rope is not something the rope is accountable for. We were unable to find an alternative in that particular case. We had a large make variable and wanted to iterate through it, without either: 1. Using one command per item in the list (takes an order of magnitude too long) or 2. Trying to pass the whole thing as one item (blows up many shells). -s -- Copyright 2010, all wrongs reversed. Peter Seebach / usenet-nospam(a)seebs.net http://www.seebs.net/log/ <-- lawsuits, religion, and funny pictures http://en.wikipedia.org/wiki/Fair_Game_(Scientology) <-- get educated! |