news@adm.BRL.MIL (The News System <news>) (09/07/90)
Via: UK.AC.DL.DLGM; 7 SEP 90 8:39:53 BST
Via: UK.AC.DARESBURY.CXA; Fri, 7 Sep 90 08:39 GMT
(V40 at UK.AC.DARESBURY.DLGM
From: Bill Purvis <wh%cxa.dl.ac.uk@pucc.princeton.edu>
Date: Fri, 7 Sep 90 08:38:10 +0100
Message-Id: <14310.9009070738@uk.ac.dl.cxa>
To: unix-wizards%arpa.brl%earn-relay@dlgm.dl.ac.uk
Subject: re: changing root passwd
We run ATT System 5 R 3.2 and have had the same problem - the `official'
procedure is:
1) Boot the system using the (first) distribution floppy disk.
2) When it asks if you are ready to install Unix, break out by
typing Ctrl-\ (The ATT manual says Ctrl-Break but its wrong!).
3) Run fsck:
# /tec/fsck /dev/dsk/0s1
4) Mount 0s1 (hard disk root partition)
# /etc/mount /dev/dsk/0s1 /mnt
5) You can then edit the passwd file using `ed'
# ed /mnt/etc/passwd
Don't try anything subtle here, all you need is to delete
the `x' on the first line.
6) Unmount the hard disk
/etc/umount /dev/dsk/0s1
7) Remove floppy disk and reboot.
Its a bit fidddly to do, especially when the distribution floppy has
so little of unix on it. It doesn't have `ls' even !. It can be done if
you're reasonably careful.
Have fun!!
Bill Purvis System Administrator
Daresbury Lab
Warrington, Cheshire, England.rjc@devo.unify.com (Ronald Cole) (09/08/90)
In article <24418@adm.BRL.MIL> news@adm.BRL.MIL (The News System <news>) writes:
[ description of how to break root with the dist. floppy deleted ]
Its a bit fidddly to do, especially when the distribution floppy has
so little of unix on it. It doesn't have `ls' even !. It can be done if
you're reasonably careful.
Have fun!!
Bill Purvis System Administrator
Daresbury Lab
Warrington, Cheshire, England.
Who needs 'ls' when you have 'echo *'? Think creatively, this is UNIX! ;^}
--
Ronald Cole +----------------------+ internet: rjc@unify.com
Software Engineer II | This space for rent. | uucp: uunet!unify!rjc
Unify Corporation +----------------------+ voice: +1 916 920 1830 x734
"Relax. What is mind? No matter. What is matter? Never mind!" - Homer Simpson
--
Ronald Cole +----------------------+ internet: rjc@unify.com
Software Engineer II | This space for rent. | uucp: uunet!unify!rjc
Unify Corporation +----------------------+ voice: +1 916 920 1830 x734
"Relax. What is mind? No matter. What is matter? Never mind!" - Homer Simpsonpeter@ficc.ferranti.com (Peter da Silva) (09/08/90)
In article <RJC.90Sep7100750@devo.unify.com> rjc@devo.unify.com (Ronald Cole) writes: > Who needs 'ls' when you have 'echo *'? Think creatively, this is UNIX! ;^} ls() { for i do echo $i done } -- Peter da Silva. `-_-' +1 713 274 5180. 'U` peter@ferranti.com
chet@cwns1.CWRU.EDU (Chet Ramey) (09/09/90)
Peter da Silva writes: $ ls() $ { $ for i $ do $ echo $i $ done $ } Useful, that. cwns1$ unalias ls cwns1$ ls() > { > for i > do > echo $i > done > } cwns1$ ls /notthere /notthere cwns1$ /bin/ls /notthere /notthere not found Creative use of `[ -f $i -o -d $i ]' is needed, I think. Chet -- Chet Ramey ``Levi Stubbs' tears run down Network Services Group his face...'' Case Western Reserve University chet@ins.CWRU.Edu
peter@ficc.ferranti.com (Peter da Silva) (09/09/90)
In article <1990Sep9.004235.11572@usenet.ins.cwru.edu> chet@po.CWRU.Edu writes: > Peter da Silva writes: > $ ls() > $ { > $ for i > $ do > $ echo $i > $ done > $ } > Useful, that. When hacking around on a floppy-booted UNIX system, yes. > Creative use of `[ -f $i -o -d $i ]' is needed, I think. Well, it might be desirable, but anyone screwing with the UNIX on their boot floppy is probably up to noticing the difference. But, if you insist: # Anal-retentive ls() for boot floppies... dare to type it in! # # UNTESTED!!!!! # ls() { RECURSE=-d TYPE=0 DIR=0 for i do case ".$i" in .-F) TYPE=1;; .-R) RECURSE=;; .-d) DIR=1;; .-*) echo "Option $i not implemented.";; *) if [ -f $i -o -d $i ] then if [ $TYPE = 1 -a -x $i ] then echo "$i*" elif [ $TYPE = 1 -a $DIR = 1 -a -d $i ] then echo "$i/" elif [ $DIR = 0 -a -d $i ] then DIRS="$DIRS $i" else echo "$i" fi else echo "$i not found" fi ;; esac done for i in $DIRS do echo "\n$i:" ls $RECURSE $i done } -- Peter da Silva. `-_-' +1 713 274 5180. 'U` peter@ferranti.com
chet@cwns1.CWRU.EDU (Chet Ramey) (09/10/90)
$ $ $ ls()
$ $ > {
$ $ > for i
$ $ > do
$ $ > echo $i
$ $ > done
$ $ > }
$
$ $ Useful, that.
$ When hacking around on a floppy-booted UNIX system, yes.
Oh, really? You've already got `echo' as a shell built-in, why write a
function with a different name to duplicate its functionality?
Chet
--
Chet Ramey ``Levi Stubbs' tears run down
Network Services Group his face...''
Case Western Reserve University
chet@ins.CWRU.Edu