You can also unbuffer stdout in a wrapper then exec your program. GNU-ish systems, including Linux, usually include a command called stdbuf that does this:

You can also unbuffer stdout in a wrapper then exec your program. GNU-ish systems, including Linux, usually include a command called stdbuf that does this: stdbuf -i0 -o0 -e0 /some/command Where -i is for stdin, -o is for stdout, and -e is for stderr, and the number is the buffer size.