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Full Discussion: Invalid null command error
Top Forums Shell Programming and Scripting Invalid null command error Post 302823677 by juzz4fun on Wednesday 19th of June 2013 04:25:55 PM
Old 06-19-2013
when I write all grep, sed, awk, sort commands in one line, instead of using \ to extend them in the next line, set var=`myScript` works very well...

---------- Post updated at 04:25 PM ---------- Previous update was at 04:17 PM ----------

Quote:
Originally Posted by MadeInGermany
You were hit by a parser bug:
Code:
echo a\
b\
c
a b c

Code:
echo `echo a\
b\
c`
a

the next lines are not appended and missing in the output.
The bug is fixed in recent versions of tcsh.

BTW if you omit the "set", it will work in sh,ash,dash,bash,ksh,zsh,...
Thanks for the reply.
But, your example is working just fine ...
Code:
echo a\
> b\
> c
abc

echo `echo a\
> b\
> c`
abc

.. and I am on csh...

I guess somewhere down the line, \ is the culprit .... need to get rid of it...

Thank you all for the time you spent on this .... Smilie
 

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echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.11 3 Aug 1994 echo(1B)
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