Travis Environment

A repo to reflect on the Travis CI environment.

I'm sure they say these things in their docs, but I've looked for 20 min, and it seems easier at this point to just make some scripts that print the relevant info.

User

whoami returns travis I don't know that you can rely on this, seem to recall reading something that said you shouldn't.

Working directory

pwd returns /home/travis/build/JoshCheek/travis-environment, in this case, that's /home/travis/build/<GITHUB-USERNAME>/<PROJECT-NAME>

Environment variables

You can see the list of environment variables here. These are the ones that seem interesting to me:

TRAVIS_RUBY_VERSION tells you the Ruby version (the question I was attempting to answer) e.g. 2.2.0

PATH has these directories:

/home/travis/.rvm/gems/ruby-2.2.0/bin
/home/travis/.rvm/gems/ruby-2.2.0@global/bin
/home/travis/.rvm/rubies/ruby-2.2.0/bin
/home/travis/.rvm/bin
/home/travis/.gimme/versions/go1.4.1.linux.amd64/bin
/usr/local/phantomjs/bin
/home/travis/.nvm/v0.10.36/bin
./node_modules/.bin
/usr/local/maven-3.2.5/bin
/usr/local/clang-3.4/bin
/home/travis/.gimme/versions/go1.4.1.linux.amd64/bin
/usr/local/phantomjs/bin
./node_modules/.bin
/usr/local/maven-3.2.5/bin
/usr/local/clang-3.4/bin
/home/travis/.gimme/versions/go1.4.1.linux.amd64/bin
/usr/local/phantomjs/bin
./node_modules/.bin
/usr/local/maven-3.2.5/bin
/usr/local/clang-3.4/bin
/usr/local/sbin
/usr/local/bin
/usr/sbin
/usr/bin
/sbin
/bin

TRAVIS_COMMIT is the git SHA that Travis is running against.

These variables are set to test:

• RACK_ENV
• RAILS_ENV
• MERB_ENV

TRAVIS_OS_NAME is 'linux'... does Travis support Windows and Mac?! I thought no, but there's some stuff around that makes it look like I'm wrong, I'll look into it further when I get to trying to work Traveling Ruby into SiB editor integration.

HAS_JOSH_K_SEAL_OF_APPROVAL is set to true, I assume it's an internal joke (he's one of their cofounders), but found it in their docs, so I assume they're going to maintain it.

HAS_ANTARES_THREE_LITTLE_FRONZIES_BADGE I don't know what this is, but antares is a star and "three little fonzies" seems to be an allusion to Pulp Fiction.

_system_arch tells you the architecture, eg x86_64

CI is set to true

TRAVIS_BUILD_ID tells you the build ID, eg 52596082 You can use this, for example, to generate the URL to that run, eg https://travis-ci.org/JoshCheek/travis-environment/builds/52596082

TRAVIS_JOB_ID tells you the job id, eg 52596083 You can use this , for example, to generate the URL to that job, eg https://travis-ci.org/JoshCheek/travis-environment/jobs/52596083

TRAVIS_BUILD_NUMBER I assume this is an integer which increments each time the build runs.

RUBY_VERSION eg ruby-1.9.3-p551, pretty sure this comes from rvm.

TRAVIS_BRANCH tells you the branch name, eg master

TRAVIS_COMMIT_RANGE I assume tells you the range from the SHA that it last pulled/ran. Eg 660d49e2db61...870193e48ada, you could use this to identify the changes that were added between the previous successful run, and the current failing run (eg git log 660d49e2db61...870193e48ada)