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Full Discussion: Trim a new line
Top Forums Shell Programming and Scripting Trim a new line Post 302459041 by tnanek on Sunday 3rd of October 2010 12:07:44 PM
Old 10-03-2010
When entering that in the command line it works just fine; however when putting that in a bash script it does not. Here is an example of how I'm getting it (I know echo adds a line break after, but thats not the issue).

What I want is just the IP address, no line breaks before or after, in a variable that I can then insert into my local host file, after some tweaking of adding my desired access domain to it.

Here's my command line:
Code:
dev:~ tnanek$ ip-home
hostdev:~ tnanek$

And here's the relevant portion of the .bashrc file:

Code:
homeip="host example.com | awk 'NR==1{printf $NF}'";
alias ip-home="echo $homeip";



---------- Post updated at 11:45 AM ---------- Previous update was at 11:35 AM ----------

And same with your method fubaya; works fine directly on the command line, but doesn't work in .bashrc. Here are my modified examples:

My command line:
Code:
dev:~ tnanek$ ip-home
dev:~ tnanek$

My .bashrc:
Code:
homeip="ping -c 1 example.com | grep 'PING' | cut -d'(' -f2 | cut -d')' -f1 | tr -d '\n'";
alias ip-home="echo $homeip";



---------- Post updated at 12:07 PM ---------- Previous update was at 11:45 AM ----------

Got it using backquotes as per
Code:
http://ubuntuforums.org/showthread.php?t=330936

Working version of fubaya's method:
Code:
homeip=`ping -c 1 example.com | grep 'PING' | cut -d'(' -f2 | cut -d')' -f1 | tr -d '\n'`;
alias ip-home="echo $homeip";

And of Scrutinizer's method:
Code:
homeip=`host example.com | awk 'NR==1{printf $NF}'`;
alias ip-home="echo $homeip";

 

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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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