Add env vars usage idiom for writing types

This commit is contained in:
Darko Poljak 2018-06-20 17:28:30 +02:00
parent 2f20b31758
commit 58b0e83655
1 changed files with 13 additions and 0 deletions

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@ -331,6 +331,19 @@ So when you generate a script with the following content, it will work:
fi
Environment variable usage idiom
--------------------------------
In type scripts you can support environment variables with default values if
environment variable is unset or null by using **${parameter:-[word]}**
parameter expansion.
Example using mktemp in a portable way that supports TMPDIR environment variable.
.. code-block:: sh
tempfile=$(mktemp "${TMPDIR:-/tmp}/cdist.XXXXXXXXXX")
Log level in types
------------------
cdist log level can be accessed from __cdist_log_level variable.One of: