Knowledge in Unix command

Meaning of Grep command in UNIX

Knowledge about grep command and their meaning and work in UNIX.

Syntax and options of grep command in UNIX

Knowledge about Syntax and options of grep command in UNIX

MEANING OF EGREP COMMAND AND SYNTAX

Knowledge about MEANING OF EGREP COMMAND AND SYNTAX in UNIX.

MEANING OF FGREP COMMAND AND SYNTAX

Knowledge about MEANING OF FGREP COMMAND AND SYNTAX in Unix.

MEANING OF SED COMMAND AND SYNTAX

Knowledge about MEANING OF SED COMMAND AND SYNTAX In unix.

MEANING OF TR COMMAND AND SYNTAX

Knowledge abóùt MEANING OF TR COMMAND AND SYNTAX IN UNIX.

MEANING OF AWK COMMAND.

KNOWLEDGE ABÓÙT MEANING OF AWK COMMAND IN UNIX AND THEIR WORK.

Fork system call

System call fork() is used to create processes. The purpose of fork() is to create a new process, which becomes the child process of the caller. ... fork() returns a zero to the newly created child process. fork() returns a positive value, the process ID of the child process, to the parent.