Can someone write an AppleScript to fix Yosemite Wifi issues?

[sampdoria]

Unloading and reloading the discoveryd service seems to keep network connectivity for a few hours or so. Can someone write an AppleScript that refreshes the discoverd service by unloading and reloading it periodically, let's say every 120 minutes or so? I have a MacMini as a media server, always on, that is dropping network connectivity constantly and would benefit from this until Apple comes out with a proper fix. The reocurring script would go something like:

1. open Terminal

2. enter the following command (to unload discoverd):

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

3. Hit return and enter admin password (to use the sudo command)

4. enter the following command (to reload discoverd):

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

5. Hit return to finish the command

6. close Terminal

Many thanks in advance!

 

[Wowzera]

Can't you create a shell script and make an automator action to open it every X minutes? You already have the commands to write a shell script.

 

[deathdruid]

Don't need Applescript. Just "sudo su" to become root, create a text file with your two commands (no sudo needed) and add it to root's cron.

 

[sampdoria]

Can't you create a shell script and make an automator action to open it every X minutes? You already have the commands to write a shell script.

I'd love to, if you can show me how thank you

----------

Don't need Applescript. Just "sudo su" to become root, create a text file with your two commands (no sudo needed) and add it to root's cron.

Can you walk me through this please? Can I undo or delete it when Apple issues a fix? Thank you.

 

[deathdruid]

Sorry, this process is a bit involved if you are not comfortable with the Terminal. I don't have time to write it all up, but here are the basics:

1. Save your two commands (without sudo) to a text file, name it "restart_discoveryd.sh" or something similar and make it executable (use Get Info on the file).
2. In Terminal, become root (the superuser account) by doing:

sudo su

and entering your password. For this to work, the user you are has to be an admin account.
3. Again in Terminal, do:

crontab -e

Hopefully that brings up an editor you are comfortable with (if not, try "set EDITOR=nano"), and you can enter a cron entry that runs your script. For instance, you might enter:

*/5 * * * * /home/CoolGuy/restart_discoveryd.sh >/dev/null 2>&1

to run the script "/home/CoolGuy/restart_discoveryd.sh" every 5 minutes and disable email notifications of what happened. More help on cron is at Crontab Quick Reference.

The Automator route would be easier, but I am not sure how to sudo in Automator, being a Unix guy myself.

----------

Oh, and to stop running this script by cron, repeat the same process but delete the line you put in when you did "crontab -e".

 

[sampdoria]

Wow, thank you deathdrruid. The crontab quick reference link is also very helpful. I'll give this a try later today. Just one question: how exactly do you do step 1 (make a text file into an executable file)?

 

[deathdruid]

Just one question: how exactly do you do step 1 (make a text file into an executable file)?

At the terminal:

chmod +x filename.sh

Sorry, I thought you could do it with Finder, but I only see "Read" and "Write" there. For a general intro to Unix on Mac OS X, see this nice writeup by Hayne.