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The sudo command signifies for "superuser do". If servers require to be administered by a number of people it is usually not a good idea for them all to employ the root account. This is because it becomes hard to determine exactly who did what, when and where if everyone logs in along with the similar credentials. The sudo utility was designed to overcome this difficulty.
The sudo utility allows users defined in the /etc/sudoers configuration file to have temporary access to run commands they would not normally be able to due to file permission restrictions. The commands can be run as user "root" or as any other user defined in the /etc/sudoers configuration file.
The privileged command you desire to run have to first begin with the word sudo followed by the command's regular syntax. While running the command along with the sudo prefix, you will be prompted for your regular password before this is executed.
You might run other privileged commands by using sudo within a five-minute period without being re-prompted for a password.