Re: Using awk within system() or open()

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Re: Re: Using awk within system() or open() by davorg (Chancellor) on Oct 24, 2001 at 13:01 UTC
I think I'd write it as: `open(UPTOP, 'cat /proc/uptime \| awk "{ print $1 } \|"');` [download] -- <http://www.dave.org.uk> "The first rule of Perl club is you don't talk about Perl club."	[reply] [d/l]
Re: Re: Re: Using awk within system() or open() by miyagawa (Chaplain) on Oct 24, 2001 at 13:06 UTC
`open(UPTOP, 'cat /proc/uptime \| awk "{ print $1 } \|"');` Then $1 will be interpolated by shell, won't it? $1 should be AWK variable, neither Perl's one nor shell's one. -- Tatsuhiko Miyagawa miyagawa@cpan.org	[reply] [d/l]
Re: Re: Re: Re: Using awk within system() or open() by davorg (Chancellor) on Oct 24, 2001 at 13:13 UTC
D'oh! You're right. Try this instead: `open(UPTOP, q(cat /proc/uptime \| awk '{ print $1 } \|'));` [download] Actually, shouldn't it be: `open(UPTOP, q(cat /proc/uptime \| awk '{ print $1 }'\|));` [download] or even (avoiding the "useless use of `cat`") `open(UPTOP, q(awk '{ print $1 }' /proc/uptime \|));` [download] -- <http://www.dave.org.uk> "The first rule of Perl club is you don't talk about Perl club."	[reply] [d/l] [select]