13.7 Group Listing of gawk Commands

Arithmetic functions	String functions	Control flow statements	Input/output processing	Time functions	Miscellaneous
atan2	asort	break	close	mktime	and
cos	gensub	continue	fflush	strftime	compl
exp	gsub	do/while	getline	systime	delete
int	index	exit	print		function
log	length	for	printf		lshift
rand	match	if	sprintf		or
sin	split	next			rshift
sqrt	strtonum	nextfile			system
srand	sub	return			xor
	substr	while
	tolower
	toupper