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Top Forums Shell Programming and Scripting Why commands inside bash script lost effectiveness? Post 302897954 by hce on Thursday 17th of April 2014 08:26:31 AM
Old 04-17-2014
Why commands inside bash script lost effectiveness?

Hi,

I have a bash script to run many system commands on CentOS machine, but I am puzzled by some commands had no effect on parent environment.

For example, I want to refresh the desktop xdg menu when some processes added or deleted items from desktop xdg menu. If I run "killall gnome-panel" directly to command line in a terminal, it'll refresh the gnome panel (killed the old panel, and restart the panel again) updated desktop xdg menu. But if I added "killall gnome-panel" to the bash script and run the script in the terminal, nothing did happen, it did not refresh the gnome-panel at all, just like it was not called.

I think that might be sub process could not affect to parent environment, but I could not find a solution to fix it . Any advice would be much appreciated.

BTW, I don't think the "killall gnome-panel" is an appropriate command to be used for refreshing or updating desktop xdg menu, appreciate if anyone know better commands to refresh or update the xdg menu.

Thank you.

Kind regards.
 

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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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