Run script as root / sudoers file doesn't work

[josvanr]

I want to set the brightness of my hp envy 17 with a script (doesn't work in 12.04). The script is called 'bri'

It containts a line that has to be called as root:

echo $bri > /sys/class/backlight/intel_backlight/brightness

The scritpt is owned by root:

jos@hpux:~/bin$ ls -l bri
-rwsr-xr-x 1 root root 233 Dec 11 22:11 bri


The script works when I am root and also when I do 'sudo ./bri ' something
but when I run it as 'jos' it says 'permission denied'. I tried to change the
sudoers file, adding permissions for the script (see file below) but it just doenst
work. What am I doing wrong? ???????



Jos


-------------------



# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"

# Host alias specification

# User alias specification

# Cmnd alias specification

# User privilege specification
root ALL=(ALL:ALL) ALL


# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL

# See sudoers(5) for more information on "#include" directives:

#includedir /etc/sudoers.d

jos ALL = (root) NOPASSWD: /home/jos/bin/gpuoff
jos ALL = (root) NOPASSWD: /home/jos/bin/suspend
jos ALL = (root) NOPASSWD: /sda10/bin/bri

[taidoka]

I would do a 'kdesu' / 'gksu' so that you get a grafical ui to enter your pw.
'kdesu -s' / 'gksu -s' means all following commands will be executed as root.

#!/bin/bash
kdesu -s
 echo $bri > /sys/class/backlight/intel_backlight/brightness
exit;

[taidoka]

Okay I'm too quickly. You want to run it without any pw prompt:

jos ALL = NOPASSWD: ALL
jos may execute all Apps without pw.
or
%users ALL = NOPASSWD: path/to/script
Now the group users may execute that script without pw prompt.
And
Lowest records have highest privileges. So if there's another record for group %user with ALL = (ALL) ALL then all nopasswd privileges will be removed.

[dodo3773]

If the path to your script is "/sda10/bin/bri" then how is it that you have a tilde "~" in your previous command (jos@hpux:~/bin$ ls -l bri)? Are you sure your script is at /sda10/ or is it actually at either /home/sda10/bin/ or /root/sda10/bin/ That would make sense as to why your sudoers file is not working correctly. What does "pwd" give you when at ~/bin ?

[josvanr]

thnx but ~/bin is a link to /sda10/bin .....

[josvanr]

hi I figured it out: to envoke the script i did

/sda10/bin/bri

where I should have done

sudo /sda10/bin/bri




(made a not of that)

[dodo3773]

Oh nice. Glad you worked it out.

[Cheesemill]

I was just about to post that suggestion, it's a common mistake

Adding a custom entry like yours to the sudoers file doesn't mean that you don't have to use sudo anymore, it just means that you won't get prompted for a password when you do.