Search for patterns in files

Vi improved text editor

Simple text editor

Pattern scanning and processing language

text

processing

scripting

awk

awk is a powerful text processing tool for extracting and manipulating data from files.

Print first column

awk '{print $1}' file.txt

Print usernames from passwd file

awk -F: '{print $1}' /etc/passwd

Print lines where 3rd field > 100

awk '$3 > 100' data.txt

Stream editor for filtering and transforming text

Sort lines of text files

Display file contents