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Top Forums Shell Programming and Scripting Using sed to replace a string in a specific position Post 302559810 by tinman47 on Wednesday 28th of September 2011 08:36:17 AM
Old 09-28-2011
Using sed to replace a string in a specific position

I asked this before, but my problem got more complicated. Heres what I am trying to do:

I'm trying to replace a string at a certain location with another string.

Heres the file I'm trying to change:

Code:
\E[0;40m \E[0;40m \E[0;40m \E[0;40m 
\E[0;40m \E[0;40m \E[0;40m \E[0;40m 
\E[0;40m \E[0;40m \E[0;40m \E[0;40m 
\E[0;40m \E[0;40m \E[0;40m \E[0;40m 
\E[0;40m \E[0;40m \E[0;40m \E[0;40m

I want to replace the escape code at the 3rd line, 2nd column with this escape code "\E[5;47m".

Heres what I tried:

Code:
sed "3 s/.;40m /5;47m /2" inputfile

The code above works, but heres the issue:

I want to be able to make sed replace any escape code with "\E[5;47m", but the sed program only detects the escape code "\E[0;40m". How can I make sed detect every escape code including "\E[0;40m"?

Like detect "\E[3;43m"? Does sed have an option like "3 s/.*;*m /5;47m /2", the "*" asterisk detects numbers 0-9?
 

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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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