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Full Discussion: check if a character is inside a variable
Top Forums UNIX for Dummies Questions & Answers check if a character is inside a variable Post 302338090 by DeCoTwc on Monday 27th of July 2009 05:13:03 AM
Old 07-27-2009
Quote:
Originally Posted by strasner
Good morning forums.

Ive been trying all weekend to do this with no luck, so i have come to the forums for help.

What i want to do is check if an inputed character is inside a variable.

for example,
if
Code:
var=1 2 3 4 5 6 7 8 9 0

i would like to see if a newly inputed number is already inside that variable before putting it in.

i hope ive explained myself enough.

p.s. if it is possible to use SED/AWK i cant use those so solutions without using those would be awesome.

thanks in advance
Without knowing what you're trying to do, I'm not sure how helpful this will be:

Code:
(04:52:30+deco@DeCoBuntu)
[~/Desktop]$x=7;for i in 1 2 3 4 5 6 7 8 9;do if [[ -n `echo $i|grep $x` ]];then echo "$i is $x";else echo "$i is not $x";fi;done
1 is not 7
2 is not 7
3 is not 7
4 is not 7
5 is not 7
6 is not 7
7 is 7
8 is not 7
9 is not 7

Basically I'm just saying that for each number in the list, check to see that number matches a predefined number. In retrospect, I suppose it could have just as easily been:

Code:
 (04:52:49+deco@DeCoBuntu)
[~/Desktop]$x=7;for i in 1 2 3 4 5 6 7 8 9;do if [[ $i -eq $x ]];then echo "$i is $x";else echo "$i is not $x";fi;done
1 is not 7
2 is not 7
3 is not 7
4 is not 7
5 is not 7
6 is not 7
7 is 7
8 is not 7
9 is not 7

Or since you you were looking for awk

Code:
 (05:01:30+deco@DeCoBuntu)
[~]$x=7;for i in 1 2 3 4 5 6 7 8 9;do echo "$i"|awk -v k=$i '{ if ( k == 7 ) print $0}';done

I'm sure someone else can come up with better solutions, but this is what I've got at 5AM.
 

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LEARN ABOUT MOJAVE

locale::codes::langfam5.18

Locale::Codes::LangFam(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangFam(3pm)

NAME

       Locale::Codes::LangFam - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangFam;

	  $lext = code2langfam('apa');		       # $lext gets 'Apache languages'
	  $code = langfam2code('Apache languages');    # $code gets 'apa'

	  @codes   = all_langfam_codes();
	  @names   = all_langfam_names();

DESCRIPTION

       The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in
       ISO 639-5.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5
       language family codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language families. A code set may be specified using either a name, or a
       constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langfam('apa','alpha');
	  $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages.

	   This is the default code set.

ROUTINES

       code2langfam ( CODE [,CODESET] )
       langfam2code ( NAME [,CODESET] )
       langfam_code2code ( CODE ,CODESET ,CODESET2 )
       all_langfam_codes ( [CODESET] )
       all_langfam_names ( [CODESET] )
       Locale::Codes::LangFam::rename_langfam  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangFam::add_langfam  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangFam::delete_langfam  ( CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangFam::delete_langfam_alias  ( NAME )
       Locale::Codes::LangFam::rename_langfam_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::delete_langfam_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.loc.gov/standards/iso639-5/id.php
	   ISO 639-5 .

AUTHOR

       See Locale::Codes for full author history.

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

COPYRIGHT

	  Copyright (c) 2011-2013 Sullivan Beck

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

perl v5.18.2							    2013-11-04					       Locale::Codes::LangFam(3pm)
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