unixexec [OPTION] [PATH] COMMAND ...

unixexec: a minimal, UCSPI inetd for Unix sockets

unixexec attaches the stdin/stdout of a command to a Unix socket:

• immediately exec(3)'s the command: the data is not proxied via another process

• does not multiplex access to a socket

$ unixexec /tmp/sock cat

$ nc -U /tmp/sock

An echo server allowing 3 concurrent connections:

service/
├── echo1
│   └── run
├── echo2
│   └── run
└── echo3
    └── run

• service/echo1/run

#!/bin/sh

exec unixsock /tmp/echo1.socket cat

• service/echo2/run

#!/bin/sh

exec unixsock /tmp/echo2.socket cat

• service/echo3/run

#!/bin/sh

exec unixsock /tmp/echo3.socket cat

Then run:

svscan service

make

#### static executable using musl
./musl-make

-U, --no-unlink : do not unlink the socket before binding

-v, --verbose : write additional messages to stderr

-h, --help : usage summary

PROTO : protocol, always set to UNIX

UNIXLOCALPATH : socket path

UNIXLOCALUID : user ID of unixexec process

UNIXLOCALUSER : user name of unixexec process

UNIXLOCALGID : group ID of unixexec process

UNIXLOCALPID : process ID of unixexec process

UNIXREMOTEPID : process ID of connecting process (support: Linux, OpenBSD)

UNIXREMOTEEUID : user ID of connecting process

UNIXREMOTEUSER : user name of connecting process

UNIXREMOTEEGID : group ID of connecting process