Script as root

Script as root

[Paul Kraus]

[-- Attachment #1: Type: text/plain, Size: 282 bytes --]

I have a backup script that mounts a drive on my xp workstations. Is
there a way I can set this script to run as root so that I do not have
to su every time I want to run it?

Paul Kraus
Network Administrator
PEL Supply Company
216.267.5775 Voice
216-267-6176 Fax
www.pelsupply.com

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: Paul Kraus (pkraus@pelsupply.com).vcf --]
[-- Type: text/x-vcard; name="Paul Kraus (pkraus@pelsupply.com).vcf", Size: 592 bytes --]

BEGIN:VCARD
VERSION:2.1
N:Kraus;Paul
FN:Paul Kraus (pkraus@pelsupply.com)
ORG:PEL Supply Company
TITLE:Network Administrator
TEL;WORK;VOICE:(216) 267-5775
TEL;CELL;VOICE:(216) 410-5526
TEL;WORK;FAX:(216) 267-6176
ADR;WORK:;;4666 Manufacturing Road;Cleveland;Ohio;44135;United States of America
LABEL;WORK;ENCODING=QUOTED-PRINTABLE:4666 Manufacturing Road=0D=0ACleveland, Ohio 44135=0D=0AUnited States of Ame=
rica
ADR;HOME:;;;;;;United States
LABEL;HOME:United States
URL;WORK:http://www.pelsupply.com
EMAIL;PREF;INTERNET:pkraus@pelsupply.com
REV:20020416T182124Z
END:VCARD

Re: Script as root

[Paul Furness]

There are a couple of ways, depending on how you are mounting the drive.

Dirty way:

If you are using NFS and are _not_ using an auto mounter of some kind
(amd, autofs), change the ownership of the script file to root, then
setUID on it. like this:

chown root SCRIPT
chmod +s SCRIPT

Note: Using SUID is not particularly secure. It's usually ok in a
trusted environment, but if a hacker could get anywhere near your linux
machine DON'T DO IT THIS WAY. In that case, look at using amd or autofs.

Cleaner way:

Presumably you are using SAMBA to mount the drive from your XP box. In
which case, you don't need to be root, provided that the mount point is
owned by the user. For example, as user paulk, you could create a
directory to use for the mount (mkdir ~/windows) and then you should be
able to mount the samba share as the user with:

smbmnt //machine/sharename ~/windows -o username=XPUSER,password=XPPASS

and later on unmount it with:

smbumount ~/windows

However, for this to work, smbmnt and smbumount must be suid. Assuming
you have a standard setup, you can do that like this (as root):

chmod +s /usr/bin/smbmnt /usr/bin/smbumount

Note: This is fairly safe to do; smbmnt and smbumount are designed to be
run this way.


Paul.


On Tue, 2002-10-01 at 14:55, Paul Kraus wrote:
> I have a backup script that mounts a drive on my xp workstations. Is
> there a way I can set this script to run as root so that I do not have
> to su every time I want to run it?
> 
> Paul Kraus
> Network Administrator
> PEL Supply Company
> 216.267.5775 Voice
> 216-267-6176 Fax
> www.pelsupply.com
-- 
Paul Furness

Systems Manager

2+2=5 for extremely large values of 2.

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Script as root

[szonyi calin]

 --- Paul Kraus <pkraus@pelsupply.com> a écrit : > I
have a backup script that mounts a drive on my xp
> workstations. Is
> there a way I can set this script to run as root so
> that I do not have
> to su every time I want to run it?
> 

sudo is used for running commands as a different user.
man sudo

If you want the script to run regullarly you can use
cron.

man crond
man crontab 
Pay attention to the EDITOR variable in your shell 
because this editor is used to edit crontab

You can mount your partition as user.
man fstab

Bye
Calin

> Paul Kraus
> Network Administrator
> PEL Supply Company
> 216.267.5775 Voice
> 216-267-6176 Fax
> www.pelsupply.com
> > BEGIN:VCARD
> VERSION:2.1
> N:Kraus;Paul
> FN:Paul Kraus (pkraus@pelsupply.com)
> ORG:PEL Supply Company
> TITLE:Network Administrator
> TEL;WORK;VOICE:(216) 267-5775
> TEL;CELL;VOICE:(216) 410-5526
> TEL;WORK;FAX:(216) 267-6176
> ADR;WORK:;;4666 Manufacturing
> Road;Cleveland;Ohio;44135;United States of America
> LABEL;WORK;ENCODING=QUOTED-PRINTABLE:4666
> Manufacturing Road=0D=0ACleveland, Ohio
> 44135=0D=0AUnited States of Ame=
> rica
> ADR;HOME:;;;;;;United States
> LABEL;HOME:United States
> URL;WORK:http://www.pelsupply.com
> EMAIL;PREF;INTERNET:pkraus@pelsupply.com
> REV:20020416T182124Z
> END:VCARD
>  

___________________________________________________________
Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en français !
Yahoo! Mail : http://fr.mail.yahoo.com
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Script as root

[pa3gcu]

On Tuesday 01 October 2002 13:55, Paul Kraus wrote:
> I have a backup script that mounts a drive on my xp workstations. Is
> there a way I can set this script to run as root so that I do not have
> to su every time I want to run it?

You could automate the process via crond. As root;
crontab -e
add a line for your script an example;

 10 6 * * */home/pa3gcu/scripts/own-work/dynipcheck

'man crontab' shows more examples.


>
> Paul Kraus
> Network Administrator
> PEL Supply Company
> 216.267.5775 Voice
> 216-267-6176 Fax
> www.pelsupply.com

-- 
Regards Richard
pa3gcu@zeelandnet.nl
http://people.zeelandnet.nl/pa3gcu/

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

RE: File in use Samba ( was Script as root)

[Paul Kraus]

I have written the script to tar up folders on my xp box. The script
works. I mount -t smbfs .... The folder I want. I then tar mnt/folder
The problem is that I get errors saying that the file changed as we read
it. Or text file busy. 
None of the files are in use. Nor are they system files of any kind. I
know for a fact that the xp system is not using them. Any ideas as to
what may be causing this?

I am smbmounting the drive rather then using smbtar due to the
limitations of smbtar.

My script tars up a folder and the dumps the output to a text file. The
script does this for about 4 different folders. It then tars the
tarballs together into one file with the "index" text files also tarred
up. It is then compresses using bzip2. The work files are deleted.

Paul

-----Original Message-----
From: Paul Furness [mailto:paul.furness@vil.ite.mee.com] 
Sent: Tuesday, October 01, 2002 10:24 AM
To: Paul Kraus
Cc: linux-newbie@vger.kernel.org
Subject: Re: Script as root


There are a couple of ways, depending on how you are mounting the drive.

Dirty way:

If you are using NFS and are _not_ using an auto mounter of some kind
(amd, autofs), change the ownership of the script file to root, then
setUID on it. like this:

chown root SCRIPT
chmod +s SCRIPT

Note: Using SUID is not particularly secure. It's usually ok in a
trusted environment, but if a hacker could get anywhere near your linux
machine DON'T DO IT THIS WAY. In that case, look at using amd or autofs.

Cleaner way:

Presumably you are using SAMBA to mount the drive from your XP box. In
which case, you don't need to be root, provided that the mount point is
owned by the user. For example, as user paulk, you could create a
directory to use for the mount (mkdir ~/windows) and then you should be
able to mount the samba share as the user with:

smbmnt //machine/sharename ~/windows -o username=XPUSER,password=XPPASS

and later on unmount it with:

smbumount ~/windows

However, for this to work, smbmnt and smbumount must be suid. Assuming
you have a standard setup, you can do that like this (as root):

chmod +s /usr/bin/smbmnt /usr/bin/smbumount

Note: This is fairly safe to do; smbmnt and smbumount are designed to be
run this way.


Paul.


On Tue, 2002-10-01 at 14:55, Paul Kraus wrote:
> I have a backup script that mounts a drive on my xp workstations. Is
> there a way I can set this script to run as root so that I do not have

> to su every time I want to run it?
> 
> Paul Kraus
> Network Administrator
> PEL Supply Company
> 216.267.5775 Voice
> 216-267-6176 Fax
> www.pelsupply.com
-- 
Paul Furness

Systems Manager

2+2=5 for extremely large values of 2.

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Script as root

[Ray Olszewski]

Yes. You want to set the suid bit on it and have it owned by root. "man 
chmod" (or maybe other chmod documentation) for the details.

At 09:55 AM 10/1/02 -0400, Paul Kraus wrote:
>I have a backup script that mounts a drive on my xp workstations. Is
>there a way I can set this script to run as root so that I do not have
>to su every time I want to run it?



--
-------------------------------------------"Never tell me the odds!"--------
Ray Olszewski					-- Han Solo
Palo Alto, California, USA			  ray@comarre.com
-------------------------------------------------------------------------------

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Script as root

[Jim Reimer]

suid bit on a script is ignored, isn't it?

-jdr-

Ray Olszewski wrote:
> Yes. You want to set the suid bit on it and have it owned by root. "man 
> chmod" (or maybe other chmod documentation) for the details.
> 
> At 09:55 AM 10/1/02 -0400, Paul Kraus wrote:
> 
>> I have a backup script that mounts a drive on my xp workstations. Is
>> there a way I can set this script to run as root so that I do not have
>> to su every time I want to run it?
> 
> 
> 
> 
> -- 
> -------------------------------------------"Never tell me the 
> odds!"--------
> Ray Olszewski                    -- Han Solo
> Palo Alto, California, USA              ray@comarre.com
> ------------------------------------------------------------------------------- 

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

RE: File in use Samba ( was Script as root)

[Ray Olszewski]

At 10:57 AM 10/1/02 -0400, Paul Kraus wrote:
>I have written the script to tar up folders on my xp box. The script
>works. I mount -t smbfs .... The folder I want. I then tar mnt/folder
>The problem is that I get errors saying that the file changed as we read
>it. Or text file busy.
>None of the files are in use. Nor are they system files of any kind. I
>know for a fact that the xp system is not using them. Any ideas as to
>what may be causing this?

The only idea this description suggests to me is that the file in question 
was recently changed and buffered on the XP system, and the "change" tar 
detects is the result of the XP system sync'ing (or its Windows equivalent) 
the hard drive to the buffer. But this is fishing in a cloudy pond. Could 
you repost with a small snippet that reports the actual message tar (or 
smbd or mountd or whatever is giving you the error) posts for each of the 
two errors?


--
-------------------------------------------"Never tell me the odds!"--------
Ray Olszewski					-- Han Solo
Palo Alto, California, USA			  ray@comarre.com
-------------------------------------------------------------------------------

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: Script as root

[pa3gcu]

On Tuesday 01 October 2002 16:11, Jim Reimer wrote:
> suid bit on a script is ignored, isn't it?

AFAIK yes, and the saying is, never run a script as root, root is evil, one 
small oversight and damage can be done period.

I once was accused of destorying someones system because i said, "if" you 
want to get all the information from the script then you will need to run it 
as root, if it is run under a user it will not gain some vital information 
from your /etc dir, a few days later a mail appierd on that particular 
mailing list saying i had destroyed his system with my script.
Many still use that script actually but thats asside the point, root is evil.

> -jdr-
>
> Ray Olszewski wrote:
> > Yes. You want to set the suid bit on it and have it owned by root. "man
> > chmod" (or maybe other chmod documentation) for the details.
> >
> > At 09:55 AM 10/1/02 -0400, Paul Kraus wrote:
> >> I have a backup script that mounts a drive on my xp workstations. Is
> >> there a way I can set this script to run as root so that I do not have
> >> to su every time I want to run it?
> >
> > --
> > -------------------------------------------"Never tell me the
> > odds!"--------
> > Ray Olszewski                    -- Han Solo
> > Palo Alto, California, USA              ray@comarre.com
> > -------------------------------------------------------------------------
> >------

-- 
Regards Richard
pa3gcu@zeelandnet.nl
http://people.zeelandnet.nl/pa3gcu/

-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs