On: Moreutils: A collection of Unix tools that nobody ...

[mc4ndr3]

How does sponge compare with tee?

[dredmorbius → mc4ndr3]

tee(1) duplexes its input, streaming to both the specified file and stdout.

sponge(1) soaks up input and writes it to the specified file at end of data.

tee doesn't sponge. sponge doesn't tee.