If you want to know which version of Debian or Ubuntu you are running, you can always check the /etc/apt/sources.list there you will see the version you are running but a better way is to run this on a terminal:

lsb_release -a 

The output in my Debian Box is:

Distributor ID: Debian
Description: Debian GNU/Linux 5.0 (lenny)
Release: 5.0
Codename: lenny

You can also run this in a Debian Linux.

cat /etc/debian_version 

In my Debian box this is the output:

5.0

I do not have an Ubuntu machine now, but I can remember that if you run this on an Ubuntu Linux, you will get

sid

For the output, as Ubuntu is based on Debian sid.

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Which Debian or Ubuntu are you using?

It is as easy as, run this on a terminal window.

sudo update-alternatives –config editor 

The options in my Debian system are:

There are 6 alternatives which provide `editor’.

Selection Alternative
———————————————–
1 /bin/ed
2 /bin/nano
3 /usr/bin/vim.tiny
*+ 4 /usr/bin/vim.gnome
5 /usr/bin/mcedit-debian
6 /usr/bin/emacs21

Press enter to keep the default[*], or type selection number:

The + sign denotes the default option, and the * sign denotes the actual selection, to change from vim to nano, just press 2 in this example and the ENTER.

Now all applications that uses an editor will use the new default one.

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How to change your default editor -Debian/Ubuntu-

To FORCE linux to RUN the disk check at boot, use this command:

shutdown -Fr now

On the other hand, if you want to boot clean and fast, and skip the disk check, for whatever reason, you can force a boot without the disk check by using the following command:

shutdown -fr now

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Ubuntu – Reboot your system and force disk scan/check

Here is the error in Plesk:
Unable to make action: Unable to manage service by dnsmng: dnsmng: Service named failed to start
0: /usr/local/psa/admin/htdocs/server/restart_services.php:19 psaerror(string “Unable to make action: Unable to manage service by dnsmng: dnsmng: Service named failed to start”)

I tried via a command line and got this:
service named start
Starting named: /etc/named.conf:6: change directory to ‘/var/named’ failed: file not found
/etc/named.conf:6: parsing failed

The Fix:
rpm -e bind-chroot
ln -sf /var/named/run-root/etc/named.conf /etc/named.conf
rm -rf /var/named/run-root/var/named/named.pid
/sbin/service named restart

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Starting named: /etc/named.conf:6: change directory to ‘/var/named’ failed: file not found

The Error:
[root@Server httpd]# /etc/init.d/httpd start
Starting httpd: [Mon Aug 18 07:39:26 2008] [warn] module ssl_module is already loaded, skipping
(98)Address already in use: make_sock: could not bind to address [::]:443
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:443
no listening sockets available, shutting down
Unable to open logs
                                                           [FAILED]

Came by this error and could not figure it out why Apache/httpd would not start, upon further investigation it turns out there

where 2 instances of Listen 443 in these 2 files:
/etc/httpd/conf/httpd.conf
/etc/httpd/conf.d/ssl.conf

The Fix is to remove one of the Listen directives from either of the files.

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no listening sockets available shutting down