Cannot tail -f | jq

[Patrick Browne]

When I do

logs: tail -f logs

everything is OK, but when I do

logs: tail -f logs | jq '.'

I have no output :/ Same if I do

logs: bash -c "tail -f logs | jq '.'"

I tried to do launch honcho with `env PYTHONUNBUFFERED=1 honcho start' but to no avail.

Is there any solution ?

[Nick Stenning]

Yup, there's a solution!

First of all, you should be able to verify that this isn't a honcho issue by running

tail -f logs | jq '.' | less

You'll see the same problem -- no output.

But you can override the buffering mode of STDOUT for jq using stdbuf(1):

tail -f logs | stdbuf -oL jq '.' | less

Or, for honcho:

logs: tail -f logs | stdbuf -oL jq '.'

[Patrick Browne]

Thanks !