/dev/tcp

From	Eli the Bearded <*@eli.users.panix.com>
Newsgroups	comp.os.linux.misc
Subject	/dev/tcp
Date	2026-08-19 21:20 +0000
Organization	Some absurd concept
Message-ID	<eli$2608191720@qaz.wtf> (permalink)

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What system(s) have /dev/tcp/* natively?

  $ man bash
  [...]
  REDIRECTION
  [...]
       Bash handles several filenames specially when they are used in
       redirections,  as described  in the  following table.   If the
       operating  system on  which  bash is  running  provides  these
       special files, bash will use them;  other wise it will emulate
       them internally with the behavior described below.
  [...]
              /dev/tcp/host/port
		  If  host  is a valid  hostname or Internet address,
		  and port is an integer port number or service name,
		  bash attempts to open the corresponding TCP socket.

I don't see it on the various systems I have handy (Debian 13, Amazon
Linux 2023, Mac OS 15.7.x, NetBSD 10.1, Android 14).

Elijah
------
is it a plan9 thing?

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Thread

/dev/tcp Eli the Bearded <*@eli.users.panix.com> - 2026-08-19 21:20 +0000
  Re: /dev/tcp Richard Kettlewell <invalid@invalid.invalid> - 2026-08-19 23:53 +0100
  Re: /dev/tcp Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-19 23:42 +0000
    Re: /dev/tcp Eli the Bearded <*@eli.users.panix.com> - 2026-08-20 00:59 +0000
      Re: /dev/tcp Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-20 03:59 +0000
        Re: /dev/tcp Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-20 10:10 +0100
        Re: /dev/tcp Eli the Bearded <*@eli.users.panix.com> - 2026-08-20 18:15 +0000
          Re: /dev/tcp Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-20 23:30 +0000
            Re: /dev/tcp Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-21 01:18 +0100
            Re: /dev/tcp Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-08-21 09:52 +0200
              Re: /dev/tcp Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-21 08:12 +0000
                Re: /dev/tcp Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-08-21 11:16 +0200
  Re: /dev/tcp Rich <rich@example.invalid> - 2026-08-20 13:50 +0000
    Re: /dev/tcp c186282 <c186282@nnada.net> - 2026-08-20 13:02 -0400
      Re: /dev/tcp Rich <rich@example.invalid> - 2026-08-20 18:26 +0000
    Re: /dev/tcp Eli the Bearded <*@eli.users.panix.com> - 2026-08-20 18:22 +0000

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