Unix Text Tools - KeynesYouDigIt/Knowledge GitHub Wiki

Command	Effect
`cat`	merge text files
`tac`	output text files in reverse
`head`	Output the first lines of a file
`tail`	Output the last lines of a file
`cut`	Output parts of rows
`awk`	Output parts of a line
`grep`	Search pipes and text files
`less`	Read text files
`wc`	Word, line, or character count
`nl`	Number line output
`sort`	Sort lines and output
`uniq`	Remove repeated lines
`tr`	Translate (search/replace)
`od`	Text to octal
`recode`	Convert character fonts
`expand` / unexpand	Spaces to tabs, tabs to spaces
`paste`	Merge text files horizontally
`join`	Merge text files on index, suppress duplicates
`split`	Split text files into sub files
`csplit`	Split with predetermined locations
`fold`	Wrap text
`diff`	Compare text files line by line