Github user thushara35 commented on the pull request:
https://github.com/apache/stratos/pull/54#issuecomment-56642915
In my background search i found that sed -r option is not available in mac
osx(not included in mac osx sed manual)
(below the result in ubuntu)
$ man sed
-r, --regexp-extended
use extended regular expressions in the script.
(man result in mac)
$ man sed
-E Interpret regular expressions as extended (modern) regular
expressions rather than basic regular expressions (BRE's). The re_format(7)
manual page fully describes both formats.
In mac os x we can use -E instead of -r if so we need to have two
configuration folders, one for ubuntu and other one for mac(may be more in
future). This is a maintenance overhead IMO and not best practice. It will be
better if we move forward with gsed since it is same as sed we use in unix
systems.
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