Perl
Perl is a command line interpreter for perl programming language. Perl is abbreviated as “Practical Extraction and Report Language”. It is mainly used for scanning a text file, extracting data from that text files and printing reports. This language is widely used for system management tasks and has grown from one liner to complete application development software.It is one of the efficient, easy to use and a complete programming language. It has all the major features of Unix and other structured programming language making it more comfortable for all programmers.