Sponsored Content
Top Forums Programming How to call a variable in awk again ? Post 302997644 by Corona688 on Wednesday 17th of May 2017 04:15:43 PM
Old 05-17-2017
code tags for code, please.

awk is awk, shell is shell. If you don't output the value in awk, it won't get put out.

Code:
VAR=$(awk '{ ... }' )

For interactive programs, you should be printing prompts and such to > "/dev/stderr", so they won't end up in VAR.

Or you could write the whole program in awk, or at least do a large amount of processing in awk, so there's less need for transfer.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

does this variable call work--Korn

I am new to the UNIX environment, but not to programming. My intention is to create a 2D array and print it. Since the Korn Shell does not support that kind of variable, the following is my solution right now. I have created a group of variables as follows: table00 table01 table02 table10... (2 Replies)
Discussion started by: morkfard
2 Replies

2. Shell Programming and Scripting

Enviornment Variable in B shell (I call it nested variable)

#!/bin/sh APP_ROOT_MODE1=/opt/app1.0 APP_ROOT_MODE2=/opt/app2.0 APP_ROOT=${APP_ROOT_${APP_MODE}} # enviornment variable APP_MODE will be exported in the terminal where # we run the applciation, its value is string - MODE1 or MODE2 # My intension is: # when export APP_MODE=MODE1... (4 Replies)
Discussion started by: princelinux
4 Replies

3. Programming

Setting environment variable using JNI call

I have function declaration in Java and same function definition written in C programming language.. A JNI call from Java is made to a fuction...Function would set the environment variable { putenv(cEnvString1);} using C-built -in function ..and later return the encrypted string... putenv is... (6 Replies)
Discussion started by: shafi2all
6 Replies

4. Shell Programming and Scripting

Bash: how to call function having it's name in variable?

Hello. Looking for a method of modularizing my bash script, I am stuck with such a problem. For example, I have: MODULE_NAME="test" FUNCTION_NAME="run" How do I can a function with name test_run? (4 Replies)
Discussion started by: FractalizeR
4 Replies

5. Shell Programming and Scripting

Variable names within array call

I am trying to write a piece of code that will call a value from an array. There are multiple arrays that I need to call data from. Only one array needs to be used based on the step within the program. The arrays have the names "cue_0", "cue_1", and so on. I can't figure out how to call a value... (2 Replies)
Discussion started by: vockleya
2 Replies

6. Shell Programming and Scripting

How to call arguments with variable in a script??

Hello, I was wondering if it were possible to call arguments passed to a script using a variable. For example: sh script.sh yes no good bad x=$# while do echo (last argument, then second last etc until first argument) let x=($x-1) done should print out bad good no (4 Replies)
Discussion started by: VanK
4 Replies

7. Shell Programming and Scripting

Passing awk variable in perl -e call

Hi. I am on a Solaris box and have an awk script which calls perl via the command line: timeTester="'"`perl -e 'use Time::Local;my $time = timelocal(10,10,10,10,10,2011 );print $time'`"'" But I want to pass awk variables into this call. These are the example awk variables: secondField = 10... (0 Replies)
Discussion started by: pedro6994
0 Replies

8. Shell Programming and Scripting

Call a awk script with variable and input filename

HI, MY question is a very simple one: if i want to call an awk script with the input file name and also pass a variable value , then how to do it. #>awk -f my_script.awk -v variable=value my_inputfile.txt I can't do it like this. throws error: awk: my_script.awk:18:... (0 Replies)
Discussion started by: Onkar Banerjee
0 Replies

9. Shell Programming and Scripting

Dereferencing variable inside egrep call

Hi guys I am trying to dereference a variable inside 'egrep -v ' command and getting a 'egrep: syntax error' : $ echo $exclude_list ts584d hf584db for i in `echo $exclude_list`; do egrep -v ${i} my_file done egrep: syntax error egrep: syntax error The syntax of the loop is correct.... (1 Reply)
Discussion started by: aoussenko
1 Replies

10. UNIX for Beginners Questions & Answers

How to call variable inside a function globally?

Hi Gurus, Is there a way to call a variable inside a function anywhere within the script? Thanks. BR, Ernesto (2 Replies)
Discussion started by: ernesto
2 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 03:50 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy