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Full Discussion: Running an executable from bash prompt
Top Forums Shell Programming and Scripting Running an executable from bash prompt Post 302797873 by oahmad on Tuesday 23rd of April 2013 10:33:51 AM
Old 04-23-2013
Guys, thanks for your help. I'm a complete newbie as shell-scripting. I'm using the cygwin shell to control custom c-drivers running in windows for data-acquisition modules...Anyways, so I tried the solution suggested by @elixir_sinari and it worked. I don't understand why it works, i.e. why the single quotes and why I need to use eval. More broadly, though, I'm trying to understand what @alister is suggesting. This var2 variable is actually part of a script file that I'm developing, it contains the path to my c-driver executable. I'm utilizing this path in a lot of places in my code. Since I may change this location later, I wanted to store it in a variable that can easily be modified later. What is the alternative to this?

Now, further along in my scripting, I have another issue and it is as follows:
I have 3 variable declared
Code:
handle=2
digPath="/'cygdrive/c/2i/test fixture/software/mccdaqtest/debug/Dig'"

if I do
Code:
var2="$digPath $handle"
echo $var2

I get
Code:
/'cygdrive/c/2i/test fixture/software/mccdaqtest/debug/Dig' 2

so far, so good.
but if I do:
Code:
var2="$digPath $handle config"
echo $var2

then I get this:
Code:
configive/c/2i/test fixture/software/mccdaqtest/debug/Dig' 0

What the dicken's is going on here? Why is my line being overwritten by config
. At first I thought there was a limit to the number of characters per line in bash, but I did google on and found getconf ARG_MAX which returns 32000, so that isn't the issue.
 

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LEARN ABOUT CENTOS

locale::codes::langfam

Locale::Codes::LangFam(3)				User Contributed Perl Documentation				 Locale::Codes::LangFam(3)

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 v5.16.3							    2013-02-27						 Locale::Codes::LangFam(3)
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