Re: /dev/tcp

From	Rich <rich@example.invalid>
Newsgroups	comp.os.linux.misc
Subject	Re: /dev/tcp
Date	2026-08-23 04:01 +0000
Organization	A noiseless patient Spider
Message-ID	<116draf$1ktfi$2@dont-email.me> (permalink)
References	(2 earlier) <eli$2608192059@qaz.wtf> <1165u33$36gf9$1@dont-email.me> <eli$2608201414@qaz.wtf> <11682mv$3s8jk$7@dont-email.me> <116dggf$1idoq$1@dont-email.me>

Show all headers | View raw

vallor <vallor@vallor.earth> wrote:
> At Thu, 20 Aug 2026 23:30:40 -0000 (UTC), Lawrence D’Oliveiro <ldo@nz.invalid> wrote:
> 
>> On Thu, 20 Aug 2026 18:15:27 -0000 (UTC), Eli the Bearded wrote:
>> 
>> > In comp.os.linux.misc, Lawrence DOliveiro <ldo@nz.invalid> wrote:
>> >>
>> >> On Thu, 20 Aug 2026 00:59:41 -0000 (UTC), Eli the Bearded wrote:
>> >>>
>> >>> This came up in the context of "how to test network on a system
>> >>> with no root and no helpful utilities installed."
>> >>
>> >> So a version of bash that supports /dev/tcp is somehow excluded
>> >> from that “no helpful utilities installed” assumption?
>> >
>> > The system being tested did not have bash installed. Busybox
>> > provided /bin/sh there.
>> 
>> I thought you said you were testing the *network*, not the *system*.
>> 
>> You can’t really do that (in general) without access to a proper
>> suite of diagnostic tools.
>> 
>> In such a situation, I would try one (or both) of two things:
>> 
>> * Reboot the machine with a SystemRescue USB stick
>>   <https://www.system-rescue.org/>. That way, I get unconstrained
>>   access to an entire system custom-designed precisely for running
>>   diagnostics.
>> * Bring in my own machine, which already has my own custom setup on
>>   it, and connect it to the network.
>> 
>> Both of these also have the advantage of ruling out screwups in the
>> existing OS installation.
>> 
>> And if you’re saying the situation would not allow me to do either of
>> these things, then I would not have accepted the job in the first
>> place.
> 
> Have you ever agreed with someone?

It's kind of the troll ethos, disagreeing brings on more chaos.

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 Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-21 22:57 +0000
                Re: /dev/tcp Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-08-22 06:17 +0200
              Re: /dev/tcp c186282 <c186282@nnada.net> - 2026-08-21 21:50 -0400
            Re: /dev/tcp vallor <vallor@vallor.earth> - 2026-08-23 00:56 +0000
              Re: /dev/tcp Rich <rich@example.invalid> - 2026-08-23 04:01 +0000
                Re: /dev/tcp c186282 <c186282@nnada.net> - 2026-08-23 03:37 -0400
                Re: /dev/tcp "Carlos E.R." <robin_listas@es.invalid> - 2026-08-23 13:50 +0200
                Re: /dev/tcp The Natural Philosopher <tnp@invalid.invalid> - 2026-08-23 12:52 +0100
                Re: /dev/tcp The Natural Philosopher <tnp@invalid.invalid> - 2026-08-23 12:50 +0100
  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 The Natural Philosopher <tnp@invalid.invalid> - 2026-08-21 13:54 +0100
        Re: /dev/tcp c186282 <c186282@nnada.net> - 2026-08-21 22:57 -0400
          Re: /dev/tcp "Carlos E.R." <robin_listas@es.invalid> - 2026-08-22 21:47 +0200
            The hammer is best (Was: /dev/tcp) gazelle@shell.xmission.com (Kenny McCormack) - 2026-08-22 23:50 +0000
              Re: The hammer is best (Was: /dev/tcp) c186282 <c186282@nnada.net> - 2026-08-23 04:28 -0400
              Re: The hammer is best Richard Kettlewell <invalid@invalid.invalid> - 2026-08-23 10:14 +0100
                Re: The hammer is best "Carlos E.R." <robin_listas@es.invalid> - 2026-08-23 13:55 +0200
                Re: The hammer is best The Natural Philosopher <tnp@invalid.invalid> - 2026-08-23 13:16 +0100
                Re: The hammer is best Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-08-23 21:20 +0200
      Re: /dev/tcp Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2026-08-21 13:41 +0100
        Re: /dev/tcp Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-21 22:58 +0000
        Re: /dev/tcp c186282 <c186282@nnada.net> - 2026-08-21 22:28 -0400
    Re: /dev/tcp Eli the Bearded <*@eli.users.panix.com> - 2026-08-20 18:22 +0000
      Re: /dev/tcp The Natural Philosopher <tnp@invalid.invalid> - 2026-08-21 13:57 +0100
  Re: /dev/tcp Lars Poulsen <lars@beagle-ears.com> - 2026-08-23 06:37 -0700
    Re: /dev/tcp Richard Kettlewell <invalid@invalid.invalid> - 2026-08-23 14:49 +0100
    Re: /dev/tcp The Natural Philosopher <tnp@invalid.invalid> - 2026-08-23 16:13 +0100

csiph-web