A linter for YAML files.
yamllint does not only check for syntax validity, but for weirdnesses like key repetition and cosmetic problems such as lines length, trailing spaces, indentation, etc.
Written in Python (compatible with Python 2 & 3).
http://yamllint.readthedocs.org/
On Fedora / CentOS:
sudo dnf install yamllintOn Debian 9+ / Ubuntu 16.04+:
sudo apt-get install yamllintOn older Debian / Ubuntu versions:
sudo add-apt-repository -y ppa:adrienverge/ppa && sudo apt-get update
sudo apt-get install yamllintAlternatively using pip, the Python package manager:
sudo pip install yamllint# Lint one or more files
yamllint my_file.yml my_other_file.yaml ...# Lint all YAML files in a directory
yamllint .# Use a pre-defined lint configuration
yamllint -d relaxed file.yaml
# Use a custom lint configuration
yamllint -c /path/to/myconfig file-to-lint.yaml# Output a parsable format (for syntax checking in editors like Vim, emacs...)
yamllint -f parsable file.yamlextends: default
rules:
# 80 chars should be enough, but don't fail if a line is longer
line-length:
max: 80
level: warning
# don't bother me with this rule
indentation: disable