Re: shell problems

Article View: comp.unix.shell

Article #72

#72

From: Tom Christiansen
Date: Wed, 04 Nov 1992 19:58

23 lines
1478 bytes

From the keyboard of dwhopkin@vela.acs.oakland.edu (Dave Hopkins):
:This is possible if each nested backquote is quoted in a _nested_ manner.
:
:Example (in Bourne Sys V Shell):
:
:  echo `echo \`echo \\\`echo \\\\\\\`pwd\\\\\\\` \\\` \` `
:
:Although trivial, the above does work.  What puzzles me is that the number
:of required backslashes follows this pattern:  1 3 7 11 15 ...

Insane.

$ echo $(echo $(echo $(echo $(pwd))))

is so much nicer.

--tom

-- 
    Tom Christiansen      tchrist@convex.com      convex!tchrist

"The number of UNIX installations has grown to 10, with more expected."
    - _The UNIX Programmer's Manual_, Second Edition, June, 1972.

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Message-ID: <1992Nov4.195856.21715@news.eng.convex.com>

Path: arc1-ca.pugleaf.net!sparky!uunet!ukma!asuvax!cs.utexas.edu!convex!convex!tchrist

References: <1992Oct31.115106.552@latcs1.lat.oz.au> <dwhopkin.720837062@vela>

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Newsgroups: comp.unix.shell
Path: arc1-ca.pugleaf.net!sparky!uunet!ukma!asuvax!cs.utexas.edu!convex!convex!tchrist
From: Tom Christiansen <tchrist@convex.COM>
Subject: Re: shell problems
Originator: tchrist@pixel.convex.com
Sender: usenet@news.eng.convex.com (news access account)
Message-ID: <1992Nov4.195856.21715@news.eng.convex.com>
Date: Wed, 4 Nov 1992 19:58:56 GMT
Reply-To: tchrist@convex.COM (Tom Christiansen)
References: <1992Oct31.115106.552@latcs1.lat.oz.au> <dwhopkin.720837062@vela>
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Organization: Convex Computer Corporation, Colorado Springs, CO
X-Disclaimer: This message was written by a user at CONVEX Computer
              Corp. The opinions expressed are those of the user and
              not necessarily those of CONVEX.
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