Date: Fri, 28 Jan 2005 18:16:10 +0900 From: NAKAMURA Takeshi <1yen@sh.rim.or.jp> To: Julian Elischer <julian@elischer.org> Cc: Current <freebsd-current@freebsd.org> Subject: Re: sh bug? Message-ID: <20050128172612.424D.1YEN@sh.rim.or.jp> In-Reply-To: <20050128081953.GC98080@willempie.het.net.je> References: <41F9F2DC.7000907@elischer.org> <20050128081953.GC98080@willempie.het.net.je>
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On Fri, 28 Jan 2005 09:19:53 +0100, Walter Belgers <walter+freebsd@belgers.com> wrote: > echo is a shell builting (same with ps). $ ( echo $$ ) 623 $ ( /bin/echo $$ ) 623 $$ is expaned by the outside of "()" shell. echo is not expand $$. % sh $ csh -c 'ps -alw -p $$' UID PID PPID CPU PRI NI VSZ RSS MWCHAN STAT TT TIME COMMAND 1001 788 670 5 20 0 2240 1752 pause S+ p3 0:00.02 csh -c ps -alw -p $$ csh pid^^^ ^^^sh pid $ ( csh -c 'ps -alw -p $$' ) UID PID PPID CPU PRI NI VSZ RSS MWCHAN STAT TT TIME COMMAND 1001 790 670 3 20 0 2240 1752 pause S+ p3 0:00.02 csh -c ps -alw -p $$ csh pid^^^ ^^^sh pid same sh pid. I have poor english, sorry. (on 5.3-RELEASE-p5)
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