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Keep an installation alive with launchd & launchctl
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| <?xml version="1.0" encoding="UTF-8"?> | |
| <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> | |
| <plist version="1.0"> | |
| <dict> | |
| <key>KeepAlive</key> | |
| <dict> | |
| <key>SuccessfulExit</exit> | |
| <true/> | |
| </dict> | |
| <key>Label</key> | |
| <string>com.tvt.keep-twitter-alive</string> | |
| <key>LaunchOnlyOnce</key> | |
| <false/> | |
| <key>RunAtLoad</key> | |
| <true/> | |
| <key>Program</key> | |
| <string>/Applications/Twitter.app/Contents/MacOS/Twitter</string> | |
| </dict> | |
| </plist> |
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| Add this .plist to ~/Library/LaunchAgents to have it automatically | |
| take effect whenever you log in. It will continue to be active until | |
| you log out (even if you delete the file). | |
| You can take manual control over it instead by putting the file | |
| anywhere else, then using launchctl like this: | |
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| launchctl load path/to/the/plist/com.admsyn.keep-twitter-alive.plist | |
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| and | |
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| launchctl unload path/to/the/plist/com.admsyn.keep-twitter-alive.plist | |
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| Some notes : | |
| - It will keep itself from rebooting the app repeatedly over a short | |
| period of time (e.g. if it crashes it will reboot instantly, if it | |
| crashes again right away it'll wait ~10 secs before trying again). | |
| I believe this is adjustable with another param in the plist. | |
| - launchd "owns" the app it spawns this way, so if you open the app | |
| yourself, then load the .plist, you'll get two copies of the app running. | |
| - Make sure the "Program" arg in the .plist points to the actual | |
| executable (e.g. in Contents/MacOS) instead of just the .app | |
| Some info: http://launchd.info |
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