Re: Final conversion questions
From: Bob Martin (bob_at_buckhorn.net)
Date: 02/29/04
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Date: Sun, 29 Feb 2004 10:51:31 -0600
Scott,
Paul is absolutely right. The perl script is missing a line:
next unless $home =~ /home/;
See new attachment. Sorry about that. I grabbed the wrong script.
Bob
Paul Schenkeveld wrote:
> Hi Scott, Bob, All,
>
> PLEASE be VERY CAREFULL with the perl script. The first account
> in /etc/passwd is root with / as its home directory, so everything
> will be chown'd to root. Later they ge chown'd to operator, bin, tty,
> kmem and so on because all these accounts have / as their home dir.
>
> Files for normal users will eventually be corrected once their accounts
> are encountered later in the password file but ownership/group
> membership of all system files and directories will be lost forever this
> way.
>
> You could use this perl script on a copy op /etc/passwd with all
> system accounts removed, leaving just the normal users and you'll
> be fine.
>
> Or - without perl - the following lines can be cut-n-pasted directly
> into a /bin/sh compatible shell to do what you want to do, assuming
> all normal users have home directories living under /home.
>
> awk -F: '$6 ~ "^/home/" {print $6, $3, $4}' /etc/passwd |
> while read dir uid gid
> do
> chown -R $uid:$gid $dir
> done
>
> Regards,
>
> Paul Schenkeveld, Consultant
> PSconsult ICT Services BV
>
> On Sun, Feb 29, 2004 at 12:42:01AM -0600, Bob Martin wrote:
>
>>Scott,
>>After you move the directories, use the attached perl script (run as
>>root). Use the -r option to scp, and you'll get all files, including .
>>files.
>>
>>Bob Martin
>>
>>
>>
>>Scott St. John wrote:
>>
>>>Bob-
>>>
>>>I do not have a NFS connection between the two boxes, I am using scp to
>>>transfer files between the Linux and the new FreebSD boxes. I used John
>>>The Ripper to merge my passwd and shadow files and then used some awk
>>>scripts from the OpenBSD site to format, then create my new passwd file
>>>for BSD. I am almost sure the UID/GID will NOT be the same since BSD
>>>starts at a different # than Linux where my first UID is 1000.
>>>
>>>If you have it, it sounds like the perl script would be the better trick
>>>since it would check the passwd file instead of assuming the UID/GID were
>>>the same.
>>>
>>>Thanks!
>>>
>>>-Scott
>>>
>>>On Sat, 28 Feb 2004 13:53:12 -0600, Bob Martin wrote
>>>
>>>
>>>>Scott,
>>>>I haven't followed this thread closely enough, but from what you're
>>>>saying, it sounds like you have a NFS connection between the 2 boxen.
>>>>That being the case, and since the UID/GID's are the same on both boxen
>>>>(IIRC you moved the Linux accounts to the BSD box), the following
>>>>command will get all of the files, and maintain the permissions:
>>>>
>>>>cp -pRP /<linux mount point/home/* /home/
>>>>
>>>>If the UID/GID's have changed, then this command will fix them for you:
>>>>(Note, this assumes you use bash as your shell)
>>>>cd /home
>>>>for a in `ls -1 /home`;do chown -R $a:users $a;done
>>>>
>>>>That command does assume that you have a 1 to 1 relationship between
>>>>home directories and usernames. If not, let me know and I'll find my
>>>>little perl script that reads /etc/passwd and sets the permissions.
>>>
>>>
>>>_______________________________________________
>>>freebsd-isp@freebsd.org mailing list
>>>http://lists.freebsd.org/mailman/listinfo/freebsd-isp
>>>To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org"
>
>
>>#!/usr/bin/perl
>>$Home = "/home";
>>
>>open(PASSWD, '/etc/passwd') or die("Can't open password: $!\n");
>>while (<PASSWD>) {
>> chomp;
>> ($login, $passwd, $uid, $gid, $gcos, $home, $shell) = split(/:/);
>> system("chown -R $uid:$gid $home") or die("Error: $!\n");
>> print "$login, $uid, $gid, $home\n";
>>}
>
>
>>_______________________________________________
>>freebsd-isp@freebsd.org mailing list
>>http://lists.freebsd.org/mailman/listinfo/freebsd-isp
>>To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org"
>
>
> _______________________________________________
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> To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org"
#!/usr/bin/perl
$Home = "/home";
open(PASSWD, '/etc/passwd') or die("Can't open password: $!\n");
while (<PASSWD>) {
chomp;
($login, $passwd, $uid, $gid, $gcos, $home, $shell) = split(/:/);
next unless $home =~ /home/;
print "Processing: $home\n";
system("chown -R $uid:$gid $home");
}
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