建立一個 mac 的後臺進程（daemon）

Mac中建立守護進程（Daemon）

建立一個能夠執行的腳本 hello.sh

touch /Users/oslivan/test/hello.sh
chmod 755 /Users/oslivan/test/hello.sh
## hello.sh start
for((;;))
do
  echo "hello."
  sleep 3
done
## hello.sh end

建立一個 plist， 並經過 launchctl 加載

touch /Users/oslivan/Library/LaunchAgents/com.oslivan.test.hello.plist
## com.oslivan.test.hello.plist start
<?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>Label</key>
        <string>com.oslivan.test.hello</string>
        <key>ProgramArguments</key>
        <array>
            <string>/Users/oslivan/test/hello.sh</string>
        </array>
        <key>StandardOutPath</key>
        <string>/Users/oslivan/test/logfile.log</string>
        <key>StandardErrorPath</key>
        <string>/Users/oslivan/test/logfile_error.log</string>
        <key>RunAtLoad</key>
        <true/>
        <key>KeepAlive</key>
        <true/>
    </dict>
</plist>
## com.oslivan.test.hello.plist end
launchctl load /Users/oslivan/Library/LaunchAgents/com.oslivan.test.hello.plist

測試是否啓動成功

ps -ef | grep hello
cd /Users/oslivan/test/ && tail logfile.log

參考

Sample Guide
launchd.plist 語法
launchd 教程