How to start deadbeef and set rt priority at boot???

Question

Hi.
I used this two commands to start Deadbeef ( the media player) and set it to real-time priority:
$deadbeef
$chrt -f -p 99 `pgrep deadbeef-main`
Well, it works, but I want to do it at boot, like automatically start the application and automatically set it to realtime priority.
I tried editing /home/<myuser>/.config/openbox/autostart and logged as my user (autologin at slim.conf) and the result is:
WORKS --> $deadbeef
DOESNT WORK -->$chrt -f -p 99 `pgrep deadbeef-main`
I tried editing ~/.config/openbox/autostart and logged as root (autologin at slim.conf) and the result is:
WORKS --> $deadbeef
DOESNT WORK -->$chrt -f -p 99 `pgrep deadbeef-main`
I tried editing /home/<myuser>/.bashrc and logged as my user (autologin at slim.conf) and the result is:
WORKS --> $deadbeef
DOESNT WORK -->$chrt -f -p 99 `pgrep deadbeef-main`
I tried editing ~/.bashrc and logged as root (autologin at slim.conf) and the result is:
WORKS --> $deadbeef
WORKS -->$chrt -f -p 99 `pgrep deadbeef-main`
So, the thing is, it works in the bashrc AND if I log in as root.
Somehow I have to be logged as root to do the $chrt -f -p 99 `pgrep deadbeef-main`
However, I would like it to be possible to start as I log in with my regular user.
Any thoughts?
Thanks in advance.

Answer 1

Oh okay, that seems simple enough.  In your first post, you should change the $chrt lines to #chrt.  In bash $ represents a normal user, and # represents root.  So it appears in your first post that you are running chrt as a normal user here:
I used this two commands to start Deadbeef ( the media player) and set it to real-time priority:
$deadbeef
$chrt -f -p 99 `pgrep deadbeef-main`
I would just make the line in your autostart or whatever begin with sudo, and then use visudo to give NOPASSWD access to that one command.
So simply do
# EDITOR=<your_editor_choice_here> visudo
Then scroll to the end and put something like
%wheel ALL=(ALL) NOPASSWD: /usr/bin/chrt
So now if you simply prepend sudo to your chrt command, it should not ask for a password for anybody who is within the wheel group.  You could also replace %wheel with you AndreProgressive (or whatever your username is).
Edit: Oh yeah, and I mentioned "EDITOR=<editor> visudo" because otherwise you end up with vi.  So if vi is what you like, or something you are comfortable with, great, but just in case, I didn't want to give you a command that gets you stuck in an editor you don't know how to get out of.  Sadly, I have seen people reboot their computers because they haven't a clue how to exit vi[m].
Last edited by WonderWoofy (2012-11-08 15:55:17)