[HLUG] Permissions

[Mark Broadbent]

On 06/01/06, Tom English <mr_tom at o2.ie> wrote:
> The thing about sticking with tuesday as meeting day was put in the wrong email, oops.
>
> It was / and everything underneath it, but I decided to reinstall Slackware last night.
>
> I've read on some things on chmod and the recursive option, and it seems that there is an option (--preverse-root) to stop accidents such as chmod -R 777 * in /, but this is not the default.
>
> I might write a simple script to call chmod with --preverse-root for the future.

or if you use bash then you could put this in your login script
(~/.bashrc) or system wide profile (/etc/profile):

alias chmod chmod -preverse-root

and anytime you call chmod it'll append the extra option.

> Matt - MySQL has always given me permission problems (aswell as sendmail, etc) - part of the fun... :)

I've never had permission problems with either or these, but maybe I
just got lucky?  But if you find yourself considering using 777 I can
promise you that nighty-nine times out of hundred there is a better,
more secure way, I promise!  What were you trying to do that made you
consider that drastic action?

Cheers
Mark

>
> Tom.
>
> ----- Original Message -----
> From: Mark Broadbent <mgjbroadbent at googlemail.com>
> Date: Friday, January 6, 2006 9:52 am
> Subject: Re: [HLUG] Permissions
>
> > Hi Tom,
> >
> > On 05/01/06, Tom English <mr_tom at o2.ie> wrote:
> > > Hi all,
> > >
> > > In trying to set some permissions, I've got lost, and ended up
> > setting / to 777.
> >
> > Was that just / or / and everything underneath it?
> >
> > > When booting, I get errors about certain files being these
> > permissions, but the odd file is easy to chmod.
> > >
> > > However, X doesn't work, and I think are some files which need
> > to be 1777 (something to do with TCP??, not sure though).
> >
> > Some parts of X require that the setuid bit to be set on some of it
> > binaries to allow normal users to access the video card.
> >
> > > Is it possible to restore the permissions, or would it just be
> > easier to backup, and re-install?
> >
> > It's a backup and reinstall I'm afraid.
> >
> > > Sorry wasn't at the meeting, will hopefully be able to get to
> > one soon - I think sticking with tuesday may be the best option.
> >
> > Surely you mean Thursday?
> >
> > > I'm going to try and attend this months meeting, but cannot
> > guarantee it...
> >
> > Next time, try popping an email to the group and we'll try to help you
> > set up the permissions you require.
> >
> > Cheers
> > Mark
> >
> > --
> > Mark Broadbent
> > Herefordshire LUG Master
> >
> > * http://www.wetlettuce.com/
> > * http://www.herefordshire.lug.org.uk/
> >
> > _______________________________________________
> > Herefordshire mailing list
> > Herefordshire at mailman.lug.org.uk
> > http://mailman.lug.org.uk/mailman/listinfo/herefordshire
> >
>
>
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--
Mark Broadbent
Herefordshire LUG Master

* http://www.wetlettuce.com/
* http://www.herefordshire.lug.org.uk/