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Operating Systems SCO Using variables in a regular expressions Post 302113848 by PinkLemonade on Tuesday 10th of April 2007 04:20:15 PM
Old 04-10-2007
Data Using variables in a regular expressions

I have the code, for example:

Code:
XYZ=5
ABC=`grep -e '^$XYZ,' x-ref | cut -f 2,3 -d , | sed -e 's/,/   #/'
echo $ABC

I have gotten creative in using escapes `\' and also brackets `{}', and combinations thereof. I want to use the variable in the grep statement.

The line in x-ref I want to retrieve is something like:
Code:
5,Carroll,064

Giving a result of "Carroll #064"

If I go out to a command-line and type:
Code:
grep -e '^$XYZ,' x-ref | cut -f 2,3 -d , | sed -e 's/,/   #/

It works just fine and brings me the result I want, but that is the problem, I need it in a script.

I was wondering how to escape out the '^$XYZ,' in grep, I have also used various -E, -F, egrep, and stuff. I was also curious, although I have found no concrete literature about this, if regexp or grep is treating the value of the variable as a field value.

The ultimate goal is having it in a larger script where the variables value will be a new incremented number in every pass.

I have used google.com to check this forum and others and have yet to find an answer. I am using SCO UNIX OpenServer 5.0.6, also this will be running on umm..., 5.0.5 and 5.0.2? versions so if anyone knows of issues with those they would be greatly appreciated also. I am not opposed to other utils for the purpose but using perl is not possible right now.

Smilie
 

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ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)
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