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I have installed a program, an icon appears on the desktop, but it has a picture of a lock on it, and clicking it does nothing.

It's a program I installed from a file. /home/roger/Downloads/General_PSS-Linux_Eng_Suse_IS_V1.00.0.R.120618.tar.bz2

I have root access, but have not been able to change the permissions. gksudo Nautilus won't work for me

sudo su won't work for me

@^&^&((&%^ - change, you %$%&^*(+ doesn't work either.

I'm probably not going about it correctly.

What do you advise?

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You can't start an application if it's not executable.

To make it executable use the following command. For example, if I had a file "mycoolapp" in my Desktop folder, I would type this:

sudo chmod +x ~/Desktop/mycoolapp

and so you don't have to be root to run the app you need to gain ownership over the file

use the chown command to regain ownership of the file

sudo chown -R roger:roger ~/

This command will give you ownership over every file in /home/roger/

Also, to start Nautilus with root permissions you have to use sudo or gksud

sudo nautilus

or 

gksudo nautilus

From there you can right-click on the offending file and select properties and then permissions. If you need to make the file executable to run it as a program, make sure the file is check marked as executable.

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  • Don't know for sure what I did wrong, but got these messages : roger@roger-desktop:~$ gksudo nautilus. Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory Please ask your system administrator to enable user sharing. (nautilus:4372): GLib-CRITICAL **: Source ID 99 was not found when attempting to remove it (nautilus:4372): GLib-CRITICAL **: Source ID 101 was not found when attempting to remove it roger@roger-desktop:~$
    – Roger Davis
    Jul 20, 2014 at 20:10
  • The lock is gone from the icon, but the app still won't start.
    – Roger Davis
    Jul 20, 2014 at 20:45
  • It may be loooking for a file called libXV.so.1 that doesn't exist. ./PSS : error while loading shared libraries: libXV.so.1 : cannot open shared object file : no such file or directory What can I do about this?
    – Roger Davis
    Jul 21, 2014 at 3:07

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