OSX Launchd
Run every hour
<?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>org.dongsheng.crontask1</string>
<key>ProgramArguments</key>
<array>
<string>/usr/bin/app</string>
<string>-f</string>
<string>/etc/app.ini</string>
</array>
<key>StartInterval</key>
<integer>3600</integer><!-- seconds -->
</dict>
</plist>
<!-- StartCalendarInterval examples -->
<!-- Run every Sunday (weekday 0) at 15:30/3:30PM -->
<key>StartCalendarInterval</key>
<dict>
<key>Weekday</key>
<integer>0</integer>
<key>Hour</key>
<integer>15</integer>
<key>Minute</key>
<integer>30</integer>
</dict>
<!-- You can use an array of dicts to specify multiple intervals -->
<!-- Run at the beginning and middle of every hour, every day -->
<key>StartCalendarInterval</key>
<array>
<dict>
<key>Minute</key>
<integer>0</integer>
</dict>
<dict>
<key>Minute</key>
<integer>30</integer>
</dict>
</array>