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+## General
+
+autobuild.sh will generate a file 'opensips.run' and send emails to the receivers. Add cron will auto build at every day's 0:00. This script also push the release file to remote server. Then you can call ./opensips.run on remote server to install opensips. 
+
+## Useage
+
+1. First, you need a user maybe named builder or any else to build opensips, and sudo permission too.
+2. Add this script to PATH, maybe ~/bin. Make sure the *.sh files have execute access.
+3. Add a cron tab with something like this 
+'0 0 * * * /home/builder/bin/autobuild.sh > /dev/null 2>&1 &'
+4. You need to modify script's location if necessary, for example my file tree is:
+.
+```bash
+├── bin
+│   ├── autobuild.sh
+│   ├── mail.cfg
+│   └── make.sh
+└── opensips
+    └── install
+        ├── build.sh
+        ├── makeself-header.sh
+        └── makeself.sh
+```
+5. You need modify email.conf for the receivers.
+6. You need to modify the push server where scp pushs the file 'opensips.run'. Maybe need setup auth key of remote server.
+
+## Related files
+autobuild.sh, mail.cfg, make.sh, build.sh, autobuild.cron
+