install synaptic by typing following command,
#sudo apt-get install synaptic
find appropriate working sources as per your requirement,
MY Default source list is given below,
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# deb cdrom:[Debian GNU/Linux 7.1.0 _Wheezy_ - Official amd64 DVD Binary-1 20130615-23:06]/ wheezy contrib main
deb cdrom:[Debian GNU/Linux 7.1.0 Update DVD 20130616: amd64 DVD 1]/ wheezy contrib main non-free
deb cdrom:[Debian GNU/Linux 7.1.0 _Wheezy_ - Official amd64 DVD Binary-3 20130615-23:06]/ wheezy contrib main
deb cdrom:[Debian GNU/Linux 7.1.0 _Wheezy_ - Official amd64 DVD Binary-2 20130615-23:06]/ wheezy contrib main
deb cdrom:[Debian GNU/Linux 7.1.0 _Wheezy_ - Official amd64 DVD Binary-1 20130615-23:06]/ wheezy contrib main
deb
http://security.debian.org/ wheezy/updates main contrib
deb-src
http://security.debian.org/ wheezy/updates main contrib
# wheezy-updates, previously known as 'volatile'
# A network mirror was not selected during install. The following entries
# are provided as examples, but you should amend them as appropriate
# for your mirror of choice.
# deb
http://ftp.debian.org/debian/ wheezy-updates main contrib
# deb-src
http://ftp.debian.org/debian/ wheezy-updates main contrib
deb
http://ftp.debian.org/debian/ wheezy main contrib non-free
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ADD any new repository via terminal, open terminal,
switch to root. then run following command,
#sudo apt-cdrom add
keep doing this as per your requirements.
you can also add DVD/CD repos, Update Disks etc.
FOR KDE USER,FOLLOW THIS COMMANDS,
PRESS ALT+F2,
little popup with search bar will open at the top center corner,type following their,
kdesu kwrite /path/to/file
and press enter, give the root password,
and edit the file you want,
another terminal based method includes,
file editing using "nano" text editor,
Open terminal as root,& type,
nano path/to/file (press enter)
if your file is present it will open up with some
contains, and if you found it blank then you're going to create it at particular location given.
