Command-line tool

sponge

brew/sponge

Checked 25 Oct 2026, 21:09 UTC · Listing refreshed from Homebrew, winget, npm, Scoop and cargo; npm packages checked against OSV.dev

Soak up standard input and write to a file

Website

At a glance

Type

Command-line tool

Install on

Windows, macOS, Linux

Last checked

25 Oct 2026, 21:09 UTC

Install it

Windows

winget install --id xdpxi.sponge -e

macOS

brew install sponge

Linux

brew install sponge

Append file content to the source file

cat path/to/file | sponge -a path/to/file

Remove all lines starting with # in a file

grep -v '^#' path/to/file | sponge path/to/file

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