Question

I want to run a command with inline comment like

sleep 1 # first sync call
sleep 1 # second sync call
# etc

But I can’t pass it to exec in Ruby

fork{  exec "sleep 1 # first async call" }
fork{  exec "sleep 1 # second async call" }

It traces warnings.

So how could I pass some comments into system call with exec.

I need it for logging

PS: As a variant: fork{ exec "sh -c 'sleep 1' # first async" }

Answer 1

When you use command ... or exec "command ...", everything after the first word is used as arguments to the command, so your comment is not being interpreted as a comment.

Regardless, your logging wouldn’t be able to capture this, since it’s only a comment — instead, you might just want to puts something before calling exec.