Three major text processing tools grep, sed, and awk Brief introduction

grep, SED, and awk are all text processing tools, and although they all have their advantages and disadvantages, one text processing command cannot be completely replaced by another, or three text-processing commands will not appear. In comparison, however, SED and awk are more powerful and have been introduced in a separate language.

grep: Text filter, if only filter text, can use grep, its efficiency is much higher than others; Sed:stream editor, Stream editor, default only processing mode space, do not process the original data, if you process the data is processed for the row, you can use SED;

awk: Report generator, formatted for display later. If you need to generate information about the data you are working on, or if the data you are working on is column-based, you might want to use awk.

See: http://lq2419.blog.51cto.com/1365130/1238880

Three major text processing tools grep, sed, and awk Brief introduction