Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Grep number between Square [] brackets
Top Forums Shell Programming and Scripting Grep number between Square [] brackets Post 302897392 by Don Cragun on Monday 14th of April 2014 02:26:24 AM
Old 04-14-2014
The following seems pretty easy to me and doesn't need sort or uniq to get a list with no duplicates:
Code:
#!/bin/ksh
var=$(awk -F '( : )|[]]' '!($2 in a) {a[$2]; print $2}' Input)
printf 'var=%s\n' "$var"

If the file Input contains:
Code:
20140320 00:08:23.846 INFO  [WebContainer : 84] - anything in line
20140320 00:08:23.846 Test  [translate : 589] - Virtual and lab lab anything
20140320 00:08:23.846 Data  [anything : 60] - anything in line
20140320 00:08:23.847 anyting  [anything : 5] - anything in line
20140320 00:08:23.846 INFO  [WebContainer : 84] - anything in line
20140320 00:08:23.846 Test  [translate : 589] - Virtual and lab lab anything
20140320 00:08:23.846 Data  [anything : 60] - anything in line
20140320 00:08:23.847 anyting  [anything : 5] - anything in line

the output produced is:
Code:
var=84
589
60
5

I still question the need for storing a list of hundreds of thousands of values in a variable. In most cases it would be better to process the values one at a time as in:
Code:
awk -F '( : )|[]]' '!($2 in a) {a[$2]; print $2}' Input | while read num
do      ... do whatever you want with $num ...
done

These 2 Users Gave Thanks to Don Cragun For This Post:
nes rbatte1
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

square brackets

I would like to substitute a phrase which contains square brackets. change TO how? Thanks (2 Replies)
Discussion started by: gilead29
2 Replies

2. Shell Programming and Scripting

WHy the double square brackets?

One of the senior administrators gave me a shell script to modify and it begins as follows: if ] && ] {more code follows} Why the double square brackets? (10 Replies)
Discussion started by: mojoman
10 Replies

3. Shell Programming and Scripting

Use of double square brackets in ksh

Hi First apologies if this has been raised before. I've got the following in a ksh script: if ] For some reason this does not work. But if I remove the double square brackets to: if This works. I thought ksh supported the ]. Or is there more to it? Thanks in advance. (3 Replies)
Discussion started by: tsu3000
3 Replies

4. Shell Programming and Scripting

Double square brackets question

Hi, I just came across an interesting shell script syntax like the one below: ] && (trap 'rm -rf ${WORK_DIR}/*.$$; echo "\n\nInterrupted !!\n\n"; exit 4' 1 2 3 15) Can someone please explain the code snippet above? The trap command bit is fine but ] && is the hazy part. Generally we use an... (2 Replies)
Discussion started by: King Nothing
2 Replies

5. UNIX for Dummies Questions & Answers

Test command - Two square brackets

Hello, Can someone please explain to me the following line, ] && break I do not understand why two test square brackets are used. Thanks, Shantanu ---------- Post updated at 03:38 PM ---------- Previous update was at 03:35 PM ---------- And, also why there's a $ before (echo $c |... (5 Replies)
Discussion started by: Shan_u2005
5 Replies

6. Shell Programming and Scripting

Delete text between square brackets and also delete those square brackets using sed or awk

Hi All, I have a text file which looks like this: computer programming systems engineering I want to get rid of these square brackets and also the text that is inside these brackets. So that my final text file looks like this: computer programming systems engineering I am using... (3 Replies)
Discussion started by: shoaibjameel123
3 Replies

7. UNIX for Dummies Questions & Answers

Single or double square brackets

Hi frieds, I don't understand the difference between single square bracket and double square brackets in a IF condition. Ex. if ; then RETURNJOB=1 else RETURNJOB=0 fi It run, but this if ]; then RETURNJOB=1 else RETURNJOB=0 fi (4 Replies)
Discussion started by: dogshort
4 Replies

8. Shell Programming and Scripting

Compare the value in between square brackets in file

I wanted to compare the value inside the Squre bracket after Colon ( : ) based on any value(seperated by or operator | ) inside the variable Thread and if match found then wnated to store in output file Input file : 20140320 00:08:43.918 INO 35] - Corporate hub is 20140320 00:08:43.918... (2 Replies)
Discussion started by: nes
2 Replies

9. Shell Programming and Scripting

Problem with occurence of square brackets

Hello all, I have the following problem: $ cat infile this is spam and i need this too this is spam and i need this too $ perl -nwe '$_ =~ /]+ \]+)\]\]*\]? (\+)$/; print "$1 - $2\n";' infile i need this - too i need this - and i need this too I am not sure how many occurences of... (13 Replies)
Discussion started by: zaxxon
13 Replies

10. Shell Programming and Scripting

IF statement with square brackets

Hi All, Hope you all are doing good. Yesterday in my project i came across a scenario which i can not guess why it was working in one region and why it was not in another region. Please find my issue below. I am using AIX version 6.0 of UNIX in my project, in shell scripting i have the... (1 Reply)
Discussion started by: mad man
1 Replies

LEARN ABOUT DEBIAN

locale::currency

Locale::Currency(3perl) 				 Perl Programmers Reference Guide				   Locale::Currency(3perl)

NAME

       Locale::Currency - standard codes for currency identification

SYNOPSIS

	   use Locale::Currency;

	   $curr = code2currency('usd');     # $curr gets 'US Dollar'
	   $code = currency2code('Euro');    # $code gets 'eur'

	   @codes   = all_currency_codes();
	   @names   = all_currency_names();

DESCRIPTION

       The "Locale::Currency" module provides access to standard codes used for identifying currencies and funds, such as those defined in ISO
       4217.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 4217
       three-letter codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying currencies. The ones currently supported are:

       alpha
	   This is a set of three-letter (uppercase) codes from ISO 4217 such as EUR for Euro.

	   Two of the codes specified by the standard (XTS which is reserved for testing purposes and XXX which is for transactions where no
	   currency is involved) are omitted.

	   This code set is identified with the symbol "LOCALE_CURR_ALPHA".

	   This is the default code set.

       num This is the set of three-digit numeric codes from ISO 4217.

	   This code set is identified with the symbol "LOCALE_CURR_NUMERIC".

ROUTINES

       code2currency ( CODE [,CODESET] )
       currency2code ( NAME [,CODESET] )
       currency_code2code ( CODE ,CODESET ,CODESET2 )
       all_currency_codes ( [CODESET] )
       all_currency_names ( [CODESET] )
       Locale::Currency::rename_currency  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Currency::add_currency  ( CODE ,NAME [,CODESET] )
       Locale::Currency::delete_currency  ( CODE [,CODESET] )
       Locale::Currency::add_currency_alias  ( NAME ,NEW_NAME )
       Locale::Currency::delete_currency_alias	( NAME )
       Locale::Currency::rename_currency_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Currency::add_currency_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Currency::delete_currency_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes man page.

SEE ALSO

       Locale::Codes
       Locale::Constants
       http://www.iso.org/iso/support/currency_codes_list-1.htm
	   The ISO 4217 data.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 1997-2001 Canon Research Centre Europe (CRE).
	  Copyright (c) 2001	  Michael Hennecke
	  Copyright (c) 2001-2010 Neil Bowers
	  Copyright (c) 2010-2011 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2011-09-26						   Locale::Currency(3perl)
All times are GMT -4. The time now is 03:39 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy