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Operating Systems Linux How to Keep your core System and personal Data safe while updating to latest distro? Post 302657209 by methyl on Saturday 16th of June 2012 07:01:31 PM
Old 06-16-2012
Personally I reserve /home for system user home directories and use a totally different directory tree on its own mountpoint(s) for the user home directories.

Some Administrators use soft links from /home to user home directories on another filesystem. I don't, though it is a valid approach.


For the system data in say root, /usr, and /var, I would backup every significant configuration file and restore (or blend) those files as appropriate after an upgrade. Rehearse on an expendable test system until you get it right. It's not easy.

Last edited by methyl; 06-16-2012 at 08:11 PM..
 

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check-permissions(1M)					  System Administration Commands				     check-permissions(1M)

NAME
check-permissions - check permissions on mail rerouting files SYNOPSIS
/usr/sbin/check-permissions [login] DESCRIPTION
The check-permissions script is intended as a migration aid for sendmail(1M). It checks the /etc/mail/sendmail.cf file for all configured alias files, and checks the alias files for :include: files. It also checks for certain .forward files. For each file that check-permis- sions checks, it verifies that none of the parent directories are group- or world-writable. If any directories are overly permissive, it is reported. Otherwise it reports that no unsafe directories were found. As to which .forward files are checked, it depends on the arguments included on the command line. If no argument is given, the current user's home directory is checked for the presence of a .forward file. If any arguments are given, they are assumed to be valid logins, and the home directory of each one is checked. If the special argument ALL is given, the passwd entry in the /etc/nsswitch.conf file is checked, and all password entries that can be obtained through the switch file are checked. In large domains, this can be time-consuming. OPERANDS
The following operands are supported: login Where login is a valid user name, checks the home directory for login. ALL Checks the home directory of all users. FILES
/etc/mail/sendmail.cf Defines environment for sendmail /etc/mail/aliases Ascii mail aliases file ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsndmu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
getent(1M), sendmail(1M), aliases(4), attributes(5) SunOS 5.11 10 Nov 2003 check-permissions(1M)
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