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Groups > comp.os.linux.misc > #90397
| From | Lars Poulsen <lars@beagle-ears.com> |
|---|---|
| Newsgroups | comp.os.linux.misc |
| Subject | Re: /dev/tcp |
| Date | 2026-08-23 06:37 -0700 |
| Organization | A noiseless patient Spider |
| Message-ID | <116et2h$1v2in$1@dont-email.me> (permalink) |
| References | <eli$2608191720@qaz.wtf> |
On 2026-08-19 14:20, Eli the Bearded wrote: > What system(s) have /dev/tcp/* natively? > [...] > /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. After several days, we have now ascertained that nobody ever implemented this with a true device interface - it is a fiction implemented by the shell intercepting the filename and diverting it. Which is kinda strange. It seems like it should be easier to really do it as a true device interface. It would be easier for quick-and-dirty programs than the socket interface. Maybe the problem is the DNS lookup would have to be done below the kernel boundary? But would it really be that much harder than the weird stuff done with virtual file systems? -- Lars Poulsen - an old geek in Santa Barbara, California
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/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 Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> - 2026-08-24 17:42 +0300
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 vallor <vallor@vallor.earth> - 2026-08-23 22:28 +0000
Re: /dev/tcp "Carlos E.R." <robin_listas@es.invalid> - 2026-08-24 09:35 +0200
Overwriting with random data (was: Re: /dev/tcp) Nuno Silva <nunojsilva@invalid.invalid> - 2026-08-24 11:10 +0100
Re: /dev/tcp c186282 <c186282@nnada.net> - 2026-08-24 00:31 -0400
Re: /dev/tcp "Carlos E.R." <robin_listas@es.invalid> - 2026-08-24 09:45 +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: The hammer is best c186282 <c186282@nnada.net> - 2026-08-24 02:18 -0400
Re: The hammer is best The Natural Philosopher <tnp@invalid.invalid> - 2026-08-24 11:26 +0100
Re: The hammer is best Joed Oakes <lost@noway.home.invalid> - 2026-08-23 19:42 -0400
Re: The hammer is best Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-23 23:56 +0000
Re: The hammer is best c186282 <c186282@nnada.net> - 2026-08-24 02:25 -0400
Re: The hammer is best rbowman <bowman@montana.com> - 2026-08-24 01:14 +0000
Re: The hammer is best "Carlos E.R." <robin_listas@es.invalid> - 2026-08-24 09:50 +0200
Re: The hammer is best c186282 <c186282@nnada.net> - 2026-08-24 00:53 -0400
Re: The hammer is best rbowman <bowman@montana.com> - 2026-08-24 06:42 +0000
Re: The hammer is best The Natural Philosopher <tnp@invalid.invalid> - 2026-08-24 11:28 +0100
Re: The hammer is best c186282 <c186282@nnada.net> - 2026-08-23 22:16 -0400
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
ksh (was: /dev/tcp) Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2026-08-24 13:56 +0100
Bash vs. ksh - Does it matter? And the 'vi' mode thing... (Was: ksh (was: /dev/tcp)) gazelle@shell.xmission.com (Kenny McCormack) - 2026-08-24 14:57 +0000
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
Re: /dev/tcp Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-08-23 22:31 +0000
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