21 Oct
2019
21 Oct
'19
10:35 p.m.
On 10/21/19 9:05 AM, tuhs-request(a)minnie.tuhs.org wrote:
Message: 17
Date: Mon, 21 Oct 2019 08:10:00 -0400 (EDT)
From:jnc@mercury.lcs.mit.edu (Noel Chiappa)
To:tuhs@minnie.tuhs.org
Cc:jnc@mercury.lcs.mit.edu
Subject: Re: [TUHS] What was your "Aha, Unix!" moment?
Message-ID:<20191021121000.34E3B18C09F@mercury.lcs.mit.edu>
Wanna have some fun?
chdir system
then try to find your way back 'home'...
v0's subdirectories suck.
--
GPG Fingerprint: 68F4 B3BD 1730 555A 4462 7D45 3EAA 5B6D A982 BAAF
From: Warren Toomey<wkt(a)tuhs.org>
But wasn't "chdir" built into the
PDP-7 Unix shell?
No. See "The Evolution of the Unix Time-sharing System", in section
"Process
control".
Also, the old 'cd' had different syntax than today's (since there was no
notion
of a pathname in the earliest Unix); it took instead a list of directories (e.g.
"cd dd ken").
Noel