Follow tail messages of CloudWatch Logs.
Usage of cwlogs-tailf:
-V verbose output
-g string
log group name
-f string
log stream name filter regexp
-s string
log stream name
$ cwlogs-tailf -V -g my-group -s my-stream
2016-05-13T01:51:18+09:00 foo
2016-05-13T01:51:18+09:00 bar
2016-05-13T01:51:19+09:00 zoo
...
$ cwlogs-tailf -V -g my-group -f ^stream-prefix-
stream1 2016-05-13T01:51:18+09:00 foo
stream2 2016-05-13T01:51:18+09:00 bar
stream1 2016-05-13T01:51:19+09:00 zoo
...
brew install https://raw.githubusercontent.com/winebarrel/cwlogs-tailf/master/homebrew/cwlogs-tailf.rb