Sponsored Content
Top Forums Shell Programming and Scripting search and replace using awk with variables Post 302281831 by jerardfjay on Thursday 29th of January 2009 02:06:55 PM
Old 01-29-2009
search and replace using awk with variables

Hi,

I have been trying to use awk with variables that needs to search for a pattern and replace it with another pattern, the patterns are supplied in a variable. I have tried several different ways without success and hope that someone can help me. Here are the details

Code:
echo $UPC
07007457809

echo $ITEM
57801

echo $line1
530,185836,20081202,RM0220599,20081206,07007457809,CT,4

and when I try the following command to search for $UPC in $line1 and replace it with $ITEM, using awk I dont get desired results.

Code:
echo $line1 | awk -v srch="$UPC" repl="$ITEM" '{ sub(srch,repl,$0); print $0 }'
awk: 0602-533 Cannot find or open file { sub(srch,repl,$0); print $0 }.
 The source line number is 1.

Please help correct syntax.
Thx
Jerardfjay
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Search and replace using awk

Dear All, I want to search and replace the text in file using awk. but facing hard luck in that. Please help me out!!!! > grep Abc.De.ync.rate /tmp/sdosanjh.txt Abc.De.ync.rate 6 write Now, I want to replace the "6" with value say "2". I... (5 Replies)
Discussion started by: sdosanjh
5 Replies

2. Shell Programming and Scripting

AWK: replace single positional character given variables

I already have accomplished this task using sed and arrays, but since I get the variable using awk, I figured I'd ask this question and maybe I can get a cleaner solution using strictly awk.. I just can't quite grasp it in awk. Story: I'm automating the (re)configuration of network interfaces,... (3 Replies)
Discussion started by: System Shock
3 Replies

3. Shell Programming and Scripting

awk - replace number of string length from search and replace for a serialized array

Hello, I really would appreciate some help with a bash script for some string manipulation on an SQL dump: I'd like to be able to rename "sites/WHATEVER/files" to "sites/SOMETHINGELSE/files" within the sql dump. This is quite easy with sed: sed -e... (1 Reply)
Discussion started by: otrotipo
1 Replies

4. Shell Programming and Scripting

search and replace with AWK

Suchen und Ersetzen mit AWK hello, i'm not good in scripting and asking for your help. With this script i change some text parts in diffent datafiles. It works without problems, but i need to get some informations about what changes in wich datafiles happend. This could be in character of a... (3 Replies)
Discussion started by: ruffi
3 Replies

5. Shell Programming and Scripting

AWK How to replace a field using 2 shell variables?

Hello everybody: I want to replace any field $2 of any file line (f.i. test.txt) matching $1 with a shell variable. $ cat test.txt F 0 B A H -12.33 Now I'm going to ask the value of variable B: $ SEARCHVAR=B $ OLDVAL=$(awk -v SEARCHVAR="$SEARCHVAR"... (4 Replies)
Discussion started by: basalt
4 Replies

6. UNIX for Advanced & Expert Users

use of variables in awk to search for pattern from a file

Hi, I need to extract all the content between two strings stored in two variables "startstring" and "endstring" startstring=hello enstring=world #notworking awk '/$startstring/, $NF ~ /$endstring/ ' file > file2 The above code is not working with variables. It works when actual string... (2 Replies)
Discussion started by: jeanjkj
2 Replies

7. Shell Programming and Scripting

awk - ignore metacharacters, search shell variables

Can I use awk to search for a string, passed from the shell, that might include metacharacters? File1 entries: Bob Marley Jammin (Bonus Track).mp3 File2 entries: Bob Marley Jammin (Bonus Track).mp3 32000 /Music/Bob Marley/ Jammin (Bonus Track).mp3 So far, I have this; $ sed -e... (9 Replies)
Discussion started by: DSommers
9 Replies

8. Shell Programming and Scripting

awk search/replace specific field, using variables for regexp & subsitution then overwrite file

Hello, I'm trying the solve the following problem. I have a file which I intend to use as a csv called master.csv The columns are separated by commas. I want to change the text on a specific row in either column 3,4,5 or 6 from xxx to yyy depending upon if column 1 matches a specified pattern.... (3 Replies)
Discussion started by: cyphex
3 Replies

9. Shell Programming and Scripting

Awk: search and replace

I have a file which requires modification via a shell script. Need to do the following: 0. take input from user for new text. 1. search for a keyword in the file. 2. going forward, search for another keyword. 3. Replace this line with user supplied input. for e.g., my file has the following... (6 Replies)
Discussion started by: chingupt
6 Replies

10. Shell Programming and Scripting

Search and replace with awk

Hi Shell Tigers, I am trying to acheive search and replace strings within a setup file. Help much appreciated. test.setup ORACLE_HOME=/oracle/product/11.0.0/home01 PATH1=/perm_loc/3222/FTP/cfg1 PATH2=/perm_loc/3222/FTP/cfg2/bin PATH3=/perm_loc/3222/FTP/cfg3/bin So... (3 Replies)
Discussion started by: jville
3 Replies
English(3pm)						 Perl Programmers Reference Guide					      English(3pm)

NAME
English - use nice English (or awk) names for ugly punctuation variables SYNOPSIS
use English; use English qw( -no_match_vars ) ; # Avoids regex performance penalty # in perl 5.16 and earlier ... if ($ERRNO =~ /denied/) { ... } DESCRIPTION
This module provides aliases for the built-in variables whose names no one seems to like to read. Variables with side-effects which get triggered just by accessing them (like $0) will still be affected. For those variables that have an awk version, both long and short English alternatives are provided. For example, the $/ variable can be referred to either $RS or $INPUT_RECORD_SEPARATOR if you are using the English module. See perlvar for a complete list of these. PERFORMANCE
NOTE: This was fixed in perl 5.20. Mentioning these three variables no longer makes a speed difference. This section still applies if your code is to run on perl 5.18 or earlier. This module can provoke sizeable inefficiencies for regular expressions, due to unfortunate implementation details. If performance matters in your application and you don't need $PREMATCH, $MATCH, or $POSTMATCH, try doing use English qw( -no_match_vars ) ; . It is especially important to do this in modules to avoid penalizing all applications which use them. perl v5.18.2 2014-01-06 English(3pm)
All times are GMT -4. The time now is 04:25 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy