gbos - a tiny Unix-flavored OS for the Game Boy Color (kernel, shell, coreutils in C, RAM filesystem) https://git.sl0p.foo/gbos.git/atom/tools/gbtype?h=master 2026-07-17T22:31:27Z 2026-07-17T22:31:27Z user user@clank 2026-07-17T22:31:27Z urn:sha1:e30b5cd3029b54296ddc9af9b02588d7cc06fd86 2026-07-17T18:31:00Z user user@clank 2026-07-17T18:31:00Z urn:sha1:138e0ad2eb25ee078464c7e2ff7d6a919a188634 Typing into a Game Boy meant driving the on-screen keyboard by hand. But the link port already *is* the shell's console: bytes the hub sends un-SLIP-framed land straight on stdin (that's what GB.type() has always done for spawn-mode command scripting). This just exposes it. gbhub now serves a control socket (/tmp/gbhub.ctl, world-connectable like the join socket) accepting two commands: 'list' and 'type [idx]' followed by a payload (delimited by the client's half-close). Injection is chunked and paced to respect the 64-byte kernel console ring, so arbitrarily long input - even multi-line scripts - reaches the shell without overflow. The server runs in both daemon and spawn modes. tools/gbtype is the client: tools/gbtype 'ls -l' run a command on GB0 (Enter appended) tools/gbtype -g 1 ps target the Nth joined Game Boy tools/gbtype -n abc no trailing Enter tools/gbtype -r just press Enter tools/gbtype -l list connected Game Boys printf 'ls\nuname\n' | tools/gbtype pipe a script via stdin Options precede the command; the first non-option word starts literal text, so 'gbtype ls -l' needs no quoting. No root required. Verified end to end: injected list/uname/echo through the real CTL protocol and saw the shell execute each and echo output back.