How to write a Mac OS X script with sudo that will load whenever user logs in?

The Yosemite 10.10.3 MacBook Pro 13 is suffering from the  discoveryd service problems, which prevent Safari from connecting to the Internet.  There is a temporary fix until 10.10.4 that requires typing in two terminal commands:

sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.discoveryd.plist
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.discoveryd.plist

Can these two commands be combined into a script that can be run as a login item, with root privileges?

If not, what's the method for creating a little application that the user can click on?

Thanks.



Larry
computerlarryAsked:
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ozoCommented:
You might configure sudoers to allow all users to run those specific commands,  and put them in   /etc/profile  or try a suid script
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MazdajaiCommented:
Try:

grep admin /etc/sudoers
%admin	ALL=(ALL) NOPASSWD: ALL

tail -1 tail -1 ~/.bash_profile
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.discoveryd.plist

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serialbandCommented:
I would suggest that you don't do it quite that way.  You've just allowed every admin user to sudo without any password restriction to any command and bypassed a security protocol that's meant to slow down trojan attacks.


You should restrict it a bit more with a different group and only allow the launchctl command to run.  The wheel group already exists, so you could use that by adding this line to /etc/sudoers
%wheel      ALL=(root) NOPASSWD: /bin/launchtcl

Then you should add all admins to the group, since it currently only contains root as a member.
dscl . append /Groups/wheel GroupMembership admin

You could create another group to do it instead of using wheel.  I randomly chose the group ID 400, but you should make sure that it isn't already taken.
dscl . create /Groups/launchctl
dscl . create /Groups/launchctl RealName “Local Admins”
dscl . create /Groups/launchctl passwd “*”
dscl . create /Groups/launchctl gid 400
dscl . create /Groups/launchctl GroupMembership admin


Then you add the following to /etc/sudoers
%launchctl      ALL=(root) NOPASSWD: /bin/launchtcl
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