Pipelining

Pipe works like a filter. It is used to connect more than one commands.Symbol for pipe is  “ | “.For example:$ who | wcIn above … Read more

Redirection

Redirection is a process of redirecting streams/ data to a file on command line.Redirection uses symbol ‘ > ’ and ‘ >> ‘. Example : … Read more

Modes of Vi

What are the different mode of Vi-editor? How can change from one mode to another. Vi and its advanced version Vim have three main modes: … Read more

Inode

Inode is an unique identification number , which uniquely exist for each file in Linux system.An Inode is a data structure that stores the following … Read more

The root user

Root user is created during the installation of system. To login on root user steps are shown in below image. Root user have following special … Read more