From wikipedia: Travis CI is a hosted, distributed continuous integration service used to build and test projects hosted at GitHub. Travis CI is configured by adding a file named .travis.yml, which is a YAML format text file, to the root directory of the GitHub repository. Travis CI automatically detects when a commit has been made and pushed to a GitHub repository that is using Travis CI, and each time this happens, it will try to build the project and run tests. This includes commits to all branches, not just to the master branch. When that process has completed, it will notify a developer in the way it has been configured to do so — for example, by sending an email containing the test results (showing success or failure), or by posting a message on an IRC channel. It can be configured to run the tests on a range of different machines, with different software installed (such as older versions of a programming language, to test for compatibility).
jq
jq is a command-line JSON processor.
If you want to learn to use jq, read the documentation at http://stedolan.github.io/jq. This documentation is generated from the docs/ folder of this repository.
If you want to hack on jq, feel free, but be warned that its internals are not well-documented at the moment. Bring a hard hat and a shovel. Also, read the wiki: http://github.com/stedolan/jq/wiki
If you're building directly from the latest git, you'll need flex and bison installed. To build, run:
autoreconf -i
./configure
make
After make finishes, you'll be able to use ./jq. You can also
install it using:
sudo make install
If you're not using the latest git version but instead building a
released tarball (available on the website), then you won't need to
run autoreconf (and shouldn't), and you won't need flex or bison.