Unix V4 Terminal Session

Boot and exploration session on Unix Fourth Edition.

┌──────────────────────────────────────────────────────────────────────────────┐
│                     UNIX Fourth Edition - PDP-11/45                          │
│                        SimH Emulator on FreeBSD 14.3                         │
└──────────────────────────────────────────────────────────────────────────────┘

PDP-11 simulator Open SIMH V4.1-0 Current        simh git commit id: d4f85d01
sim> set cpu 11/45
Disabling XQ
sim> att rk0 disk.rk
sim> att tm0 unix_v4.tap
sim> d sr 1
sim> boot -o tm
=uboot
k
unix
mem = 64530

login: root
# date
Wed Jun 12 19:52:30 EDT 1974
# who
root    tty8 Jun 12 19:52
# ls /
bin
dev
etc
lib
mnt
tmp
unix
usr
# cat /etc/passwd
root::0:1::/:
bin::3:1::/bin:
# ls /bin
ar        date      exit      login     od        size      tty
as        db        fc        lpr       pr        sort      uniq
bas       dc        goto      ls        ps        strip     who
cat       dd        if        mail      restor    stty      write
cc        df        kill      mkdir     rew       su
cdb       dsw       ld        mv        rm        sum
check     du        ln        nm        rmdir     sync
chmod     dump                          sh        time
chown     echo                                    tp
clri      ed
cmp
cp
# ls /usr/games
bj
chess
cubic
moo
ttt
ttt.k
wump
# echo "First OS with kernel written in C - November 1973"
First OS with kernel written in C - November 1973
# sync
# sync
# sync
#

Author: Jason Walsh

jwalsh@nexus

Last Updated: 2025-12-25 00:36:32

build: 2025-12-25 00:41 | sha: c12aa62