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Full Discussion: Setuid not working in Linux as script fails to write to file.
Top Forums Shell Programming and Scripting Setuid not working in Linux as script fails to write to file. Post 302826357 by rbatte1 on Wednesday 26th of June 2013 11:04:55 AM
Old 06-26-2013
Quote:
MadeInGermany
:
:
:
2. Linux does not support suid scripts.
Yes it does, but you have to consider the filesystem it is in though. Many installations only allow SUID scripts in OS filesystems (/, /bin, /sbin, /usr/bin depending how you have them mounted) and as such you may find that /home (or wherever) is mounted with that disabled.

Change to the directory where the script is and do the following:-
Code:
df -k .
grep "filesystem name" /etc/fstab

Remember to escape the forward slash in the grep command, e.g.
Code:
grep "\/my\/filesystem" /etc/fstab

What do you have in the fourth column? Actually, post the whole line.



Robin
Liverpool/Blackburn
UK
 

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LEARN ABOUT DEBIAN

virtual-filesystems

virtual-filesystems(7)					 Miscellaneous Information Manual				    virtual-filesystems(7)

NAME

       virtual-filesystems - event signalling that virtual filesystems have been mounted

SYNOPSIS

       virtual-filesystems [ENV]...

DESCRIPTION

       The  virtual-filesystems  event	is  generated  by  the mountall(8) daemon after it has mounted all virtual filesystems listed in fstab(5).
       mountall(8) emits this event as an informational signal, services and tasks started or stopped by this event will do so	in  parallel  with
       other activity.

       This event is typically used by services that must be started in order to mount other filesystems.  When this event occurs, common filesys-
       tems such as /usr may not be mounted.  For most normal services the filesystem(7) event is sufficient.

EXAMPLE

       A service that wishes to be running once virtual filesystems are mounted might use:

	      start on virtual-filesystems

SEE ALSO

       mounting(7) mounted(7) local-filesystems(7) remote-filesystems(7) all-swaps(7) filesystem(7)

mountall							    2009-12-21						    virtual-filesystems(7)
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