The one-liner to spin up a code search engine
OpenGrok is a code search engine made by Sun (and now Oracle).
It provides similar functions to LXR but much more. This project encapsulated OpenGrok into a docker container, allowing you to start an instance of OpenGrok by one command.
To start the OpenGrok, simply run:
docker run --privileged -d -v PATH/opengrok:/grok -p [public port]:8080 jrjang/docker-opengrokPut the source codes under PATH/opengrok/src on host.
It may take a while for the indexer to finish the first-time indexing, after
that, the search engine is available at http://host:[public port]/source/.
The project supports dynamic index updating through inotifywait recursively on the source folder.
This can be disabled with the environment variable INOTIFY_NOT_RECURSIVE at runtime.
Also, if you have more than 8192 files to watch, you will need to increase the amount of inotify watches allowed per user (/proc/sys/fs/inotify/max_user_watches) on your host system.
NOTE: touch doesn't trigger inotify. You should add, delete or modify the content of some source file to make it happen.