Add crontab generating script.

bin/crontab/crontab.tpl

@@ -0,0 +1,20 @@
+#
+# {{ header }}
+#
+
+# MAILTO=some-email-list
+
+HOME=/tmp
+
+# Every minute!
+* * * * * {{ cron }}
+
+# Every hour.
+42 * * * * {{ django }} cleanup
+
+# Every 2 hours.
+1 */2 * * * {{ cron }} something
+
+# Etc...
+
+MAILTO=root

bin/crontab/gen-crons.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python
+import os
+from optparse import OptionParser
+
+from jinja2 import Template
+
+
+HEADER = '!!AUTO-GENERATED!! Edit bin/crontab/crontab.tpl instead.'
+TEMPLATE = open(os.path.join(os.path.dirname(__file__), 'crontab.tpl')).read()
+
+
+def main():
+    parser = OptionParser()
+    parser.add_option('-w', '--webapp',
+                      help='Location of web app (required)')
+    parser.add_option('-u', '--user',
+                      help=('Prefix cron with this user. '
+                            'Only define for cron.d style crontabs.'))
+    parser.add_option('-p', '--python', default='/usr/bin/python2.6',
+                      help='Python interpreter to use.')
+
+    (opts, args) = parser.parse_args()
+
+    if not opts.webapp:
+        parser.error('-w must be defined')
+
+    ctx = {'django': 'cd %s; %s manage.py' % (opts.webapp, opts.python)}
+    ctx['cron'] = '%s cron' % ctx['django']
+
+    if opts.user:
+        for k, v in ctx.iteritems():
+            ctx[k] = '%s %s' % (opts.user, v)
+
+    # Needs to stay below the opts.user injection.
+    ctx['python'] = opts.python
+    ctx['header'] = HEADER
+
+    print Template(TEMPLATE).render(**ctx)
+
+
+if __name__ == '__main__':
+    main()