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Full Discussion: variable redirect messing up a sed command.
Top Forums Shell Programming and Scripting variable redirect messing up a sed command. Post 302319970 by dhibbit on Tuesday 26th of May 2009 05:03:27 PM
Old 05-26-2009
variable redirect messing up a sed command.
Not sure if that title is decent, but here we go. I'm running this string of commands:

Code:
qstat -f $1 | sed 's/^[ \t]*//' | sed -n -e ":a" -e "$ s/\n//gp;N;b a" | sed 's/\\,/,/' | awk -F"PBS_O_WORKDIR=" '{print $2}' | awk -F",PBS_O_SYSTEM" '{print $1}'

In case you're curious is takes the output of a PBS queue, removes all the leading spaces, removes all the linebreaks, removes the backslash escape character in front of any commas, then grabs the output between two strings, effectively extracting a variable from a large mess of output from PBS.

When I run that, it works just fine, all steps work perfectly. However, when I direct the output into a variable, the sed command to remove the backslash fails.

So, I simplified the problem:

echo "Hello\,World" | sed 's/\\,/,/' --> "Hello,World"
var=`echo "Hello\,World" | sed 's/\\,/,/'`; echo $var --> "Hello\,World"

any thoughts?
 

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LEARN ABOUT DEBIAN

fixnt

fixnt(1)							      Debian								  fixnt(1)

NAME

       fixnt - Filter for the Windows NT postscript printer driver.

SYNOPSIS

       fixnt < BADFILE.ps > GOODFILE.ps

DESCRIPTION

       The  Windows  NT  postscript  driver has a tendency to make broken postscript files, that are incompatible with psutils.  fixnt is a filter
       that fixes these problems, allowing the use of psnup(1).

       The filter takes the broken postscript file on stdin, and outputs a fixed postscript file on stdout.  It has no other form  for	invocation
       and takes no options on the command-line.

OPTIONS

       fixnt  takes no options.

BUGS

       fixnt does not check for NTPSOct94.  For a workaround, use a sed(1) command to replace 'NTPSOct94' with 'NTPSOct95', like so:
	      sed 's/NTPSOct94/NTPSOct95/g'
       This is particularly important for Windows NT 3.5 users.

AUTHOR

       fixnt   was   written   by   Holger   Bauer   <Holger.Bauer@topmail.de>,  Michael  Rath	<rath@itsm.uni-stuttgart.de>,  and  Akim  Demaille
       <demaille@inf.enst.fr>.

REPORTING BUGS

       Report bugs to the Authors, but avoid sending large postscript files.

       Patches are always welcome; send to <bauer@itsm.uni-stuttgart.de>.

SEE ALSO

       psnup(1), sed(1)

a2ps								   February 2003							  fixnt(1)
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