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| author | Serge Aleynikov <[email protected]> | 2015-12-22 08:31:58 -0500 |
|---|---|---|
| committer | Serge Aleynikov <[email protected]> | 2015-12-22 10:04:05 -0500 |
| commit | 5b97d6261dd667426c601f486cad0d6b1b5415aa (patch) | |
| tree | a721734ba7b0a5fa839ea76ba0748d2261de37d7 /CONTRIBUTING.md | |
| parent | a1da1e6415467c8b6ea69d279a3e7a9ed2c3b468 (diff) | |
| download | relx-5b97d6261dd667426c601f486cad0d6b1b5415aa.tar.gz relx-5b97d6261dd667426c601f486cad0d6b1b5415aa.tar.bz2 relx-5b97d6261dd667426c601f486cad0d6b1b5415aa.zip | |
Enhance the variable replacement
Add ability to also run shell commands contained in the sys.config.
E.g.:
# In this example the node name defaults to name of the release
# and can be overriden at run-time, appended with current year
$ head -1 vm.args
-sname ${NODE_NAME:-$REL_NAME}$(date +%Y)
# If the $NAME is 'abc2015', and hostname is 'MyHost', below the 'node'
# parameter gets set to 'Abc2015@myhost'
$ grep node sys.config
{node, $(echo ${NAME^})@${HOSTNAME,,}}
Diffstat (limited to 'CONTRIBUTING.md')
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