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Path: utzoo!watmath!clyde!cbosgd!ihnp4!gargoyle!crsp!pesnta!amd!turtlevax!ken
From: ken@turtlevax.UUCP (Ken Turkowski)
Newsgroups: net.unix,net.unix-wizards
Subject: Re: Sort problems
Message-ID: <636@turtlevax.UUCP>
Date: Tue, 22-Jan-85 15:30:28 EST
Article-I.D.: turtleva.636
Posted: Tue Jan 22 15:30:28 1985
Date-Received: Wed, 23-Jan-85 08:26:27 EST
References: <2041@pegasus.UUCP>
Reply-To: ken@turtlevax.UUCP (Ken Turkowski)
Followup-To: net.unix-wizards
Distribution: net
Organization: CADLINC, Inc. @ Menlo Park, CA
Lines: 45
Keywords: here documents
Xref: watmath net.unix:3419 net.unix-wizards:11688
Summary: Use the quote in here documents

In article <2041@pegasus.UUCP> mzal@pegasus.UUCP (Mike Zaleski) writes:
>
>   From: naiman@pegasus.UUCP (Ephrayim J. Naiman)
>   Okay you sort experts why do these two sorts not work ?
>
>   ...
>
>   sort << !
>   Abe
>   $Aba
>   !
>
>Try escaping the $ with a backslash when entering this to the shell.
>By the way, the ASCII value of '$' is also less than that of 'A'.
>
>-- Mike^Z   [allegra!, ihnp4!] pegasus!mzal   Zaleski@Rutgers

Even better, put quotes around the !:

sort << '!'
Abe
$Aba
!

Which produces the output:

$Aba
Abe

To quote from the Bourne shell documentation:

<< word
	The shell is read up to a line the same as word, or end of
	file.  The resulting document becomes the standard input.  If
	any character of word is quoted, no interpretation is placed
	upon the characters of the document; otherwise parameter and
	command substitution occurs, \newline is ignores, and \ is used
	to quote the characters \ $ ' and the first character of word.

The C shell has analogous propeties.
-- 

Ken Turkowski @ CADLINC, Menlo Park, CA
UUCP: {amd,decwrl,nsc,seismo,spar}!turtlevax!ken
ARPA: turtlevax!ken@DECWRL.ARPA