After fresh installation of Debian 7.0 wheezy I tried to do
sudo su - . But got the first error message
“sudo: command not found” . As per error message it means sudo is not installed in Debian system.
linux@debian:~$ sudo su –
-bash: sudo: command not found
To solve this issue install sudo in Debian,follow the given below steps
Step 1: First you have to become super user (root)
Step 2: Now install sudo with the help of command apt-get
apt-get install sudo
Step 3: Now check the sudo
root@debian:~# exit logout linux@debian:~$ sudo su - We trust you have received the usual lecture from the local System Administrator. It usually boils down to these three things: #1) Respect the privacy of others. #2) Think before you type. #3) With great power comes great responsibility. [sudo] password for linux: linux is not in the sudoers file. This incident will be reported. linux@debian:~$
Note: user name linux is not listed in sudoers file hence to allow the user called linux to use “sudo su -“. We will edit the sudoers file
Important note: With sudoers file you can also specify which particular commands a particular user or group can use.
Step 4: Allowing user to use “sudo su -”
Because in my system user called linux is first user.I want to give access of super user to this account.
switch to superuser root
linux@debian:~$ su - Password: root@debian:~#
Edit the /etc/sudoers file: Append the below given line in sudoers file.
Replace the user name called linux with your user name. save and exit
vi /etc/sudoers linux ALL=(ALL:ALL) ALL
Step 5: Now recheck. Exit from console and login with user and use the command sudo su –
root@debian:~# exit logout You have mail in /var/mail/linux linux@debian:~$ sudo su - [sudo] password for linux: root@debian:~#