Unix in a Nutshell, 4th Edition

Group Listing of awk Functions and Commands

The following table classifies awk functions and commands.

Function type	Functions or commands
a Available in gawk.
b Available in Bell Labs awk and gawk.
Arithmetic	atan2	cos	exp	int	log
	rand	sin	sqrt	srand
String	asort a	asorti a	gensub a	gsub	index
	length	match	split	sprintf	strtonum a
	sub	substr	tolower	toupper
Control Flow	break	continue	do/while	exit	for
	if/else	return	while
I/O	close	fflush b	getline	next	nextfile B
	print	printf
Programming	extension b	delete	function	system

The following functions are specific to gawk.

Function type	Functions or commands
Bit Manipulation	and	compl	lshift	or	rshift
	xor
Time	mktime	strftime	systime
Translation	bindtextdomain	dcgettext	dcngettext