Unix in a Nutshell, Fourth Edition

2017-07-07 02:10:07

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The following table classifies awk functions and commands.

Function type	Functions or commands
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`
^a Available in gawk.
^b Available in Bell Labs awk and gawk.

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`

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