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Full Discussion: Resolve variable inside another variable
Top Forums Shell Programming and Scripting Resolve variable inside another variable Post 302683355 by DeCoTwc on Tuesday 7th of August 2012 07:16:08 PM
Old 08-07-2012
I'm not quite sure what the issue you're having is. It seems the solution Bartus posted should work. For funsies though, you could probably do it like this:

Code:
(19:12:02\[root@DeCoBoxOmega)
[~/Desktop]$ tables=( "tb1|tb2" "tb3|tb4") #create an array with pairs of tables

(19:12:10\[root@DeCoBoxOmega)
[~/Desktop]$ echo "${tables[0]%%|*}" #use string manipulation to play around with one
tb1

(19:12:26\[root@DeCoBoxOmega)
[~/Desktop]$ echo "${tables[1]##*|}" #Or the other
tb4

(19:12:34\[root@DeCoBoxOmega)
[~/Desktop]$ query="${tables[0]%%|*} Join ${tables[1]##*|}" #Use these arrays to create a variable

(19:12:46\[root@DeCoBoxOmega)
[~/Desktop]$ echo ${query} #and bob's your uncle
tb1 Join tb4

(19:12:50\[root@DeCoBoxOmega)
[~/Desktop]$

This User Gave Thanks to DeCoTwc For This Post:
vinay4889
 

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LEARN ABOUT OPENSOLARIS

gnome-desktop-item-edit

gnome-desktop-item-edit(1)					   User Commands					gnome-desktop-item-edit(1)

NAME

       gnome-desktop-item-edit - GNOME Desktop file editor

SYNOPSIS

       gnome-desktop-item-edit [--create-new] filename

DESCRIPTION

       gnome-desktop-item-edit	is  the GNOME Desktop file editor, which you can use to create or edit the .desktop (known as desktop) file. GNOME
       uses a standard desktop file specification as proposed by freedesktop.org.  A desktop file consists of a number of  name-value  pairs  that
       define  how  a  desktop	should organize a particular application. As this is defined as an open standard, integration of applications into
       GNOME Desktop is relatively straightforward.

       A basic entry in the desktop file must start with a tag called [Desktop Entry]. It can then have a number of name-value pairs as defined by
       the standard.  The minimum entries are as follows:

       Name		       the name of the application

       Comment		       a textual description of the application which is displayed as a tooltip message by gnome-panel. When set appropri-
			       ately, the comment can be localized within the same file.

       Exec		       the name of the actual executable

       Icon		       the file name of the icon image

       Type		       the desktop file type

       Categories	       a multi-string field which is used by gnome-panel to group applications into the appropriate categories.

       These desktop files provide the information to gnome-panel, which     places the application in the appropriate locations on the panel.	In
       a similar manner, the GNOME file manager (Nautilus) uses information from the desktop files to display the 'applications:///' view.

OPTIONS

       The following options are supported:

       --create-new	       Creates a new .desktop file.

OPERANDS

       The following operands are supported:

       filename 	       The name of the desktop file to be edited or viewed.

EXAMPLES

       Example 1: Editing an existing .desktop file

       example% gnome-desktop-item-edit fullpath/filename

       This command invokes the launcher dialog and loads the contents of the specified desktop file into the relevant fields.

EXIT STATUS

       The following exit values are returned:

       0	Application exited successfully

       >0	Application exited with failure

FILES

       The following files are used by this application:

       /usr/bin/gnome-desktop-item-edit

	   Executable for GNOME Desktop file editor

       /usr/share/applications/

	   Location of system desktop files

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-panel		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Volatile			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gnome-panel(1), nautilus(1), attributes(5)

       Latest version of the GNOME Desktop User Guide for your platform.

NOTES

       Written by Ghee Teo, Sun Microsystems Inc., 2003.

SunOS 5.11							    2 Oct 2003						gnome-desktop-item-edit(1)
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