CONTENTS

• Perl Functions by Category
• Alphabetical Listing of Perl Functions

Full documentation of builtin functions: perlfunc

#Perl Functions by Category

Here are Perl's functions (including things that look like functions, like some keywords and named operators) arranged by category. Some functions appear in more than one place.

#Functions for SCALARs or strings

chomp, chop, chr, crypt, fc, hex, index, lc, lcfirst, length, oct, ord, pack, q//, qq//, reverse, rindex, sprintf, substr, tr///, uc, ucfirst, y///

fc is available only if the "fc" feature is enabled or if it is prefixed with CORE::. The "fc" feature is enabled automatically with a use v5.16 (or higher) declaration in the current scope.

#Regular expressions and pattern matching

m//, pos, qr//, quotemeta, s///, split, study

#Numeric functions

abs, atan2, cos, exp, hex, int, log, oct, rand, sin, sqrt, srand

#Functions for real @ARRAYs

each, keys, pop, push, shift, splice, unshift, values

#Functions for list data

grep, join, map, qw//, reverse, sort, unpack

#Functions for real %HASHes

delete, each, exists, keys, values

#Input and output functions

binmode, close, closedir, dbmclose, dbmopen, die, eof, fileno, flock, format, getc, print, printf, read, readdir, readline rewinddir, say, seek, seekdir, select, syscall, sysread, sysseek, syswrite, tell, telldir, truncate, warn, write

say is available only if the "say" feature is enabled or if it is prefixed with CORE::. The "say" feature is enabled automatically with a use v5.10 (or higher) declaration in the current scope.

#Functions for fixed-length data or records

pack, read, syscall, sysread, sysseek, syswrite, unpack, vec

#Functions for filehandles, files, or directories

-X, chdir, chmod, chown, chroot, fcntl, glob, ioctl, link, lstat, mkdir, open, opendir, readlink, rename, rmdir, stat, symlink, sysopen, umask, unlink, utime

#Keywords related to the control flow of your Perl program

break, caller, continue, die, do, dump, eval, evalbytes exit, __FILE__, goto, last, __LINE__, next, __PACKAGE__, redo, return, sub, __SUB__, wantarray

break is available only if you enable the experimental "switch" feature or use the CORE:: prefix. The "switch" feature also enables the default, given and when statements, which are documented in "Switch Statements" in perlsyn. The "switch" feature is enabled automatically with a use v5.10 (or higher) declaration in the current scope. In Perl v5.14 and earlier, continue required the "switch" feature, like the other keywords.

evalbytes is only available with the "evalbytes" feature (see feature) or if prefixed with CORE::. __SUB__ is only available with the "current_sub" feature or if prefixed with CORE::. Both the "evalbytes" and "current_sub" features are enabled automatically with a use v5.16 (or higher) declaration in the current scope.

#Keywords related to scoping

caller, import, local, my, our, package, state, use

state is available only if the "state" feature is enabled or if it is prefixed with CORE::. The "state" feature is enabled automatically with a use v5.10 (or higher) declaration in the current scope.

#Miscellaneous functions

defined, formline, lock, prototype, reset, scalar, undef

#Functions for processes and process groups

alarm, exec, fork, getpgrp, getppid, getpriority, kill, pipe, qx//, readpipe, setpgrp, setpriority, sleep, system, times, wait, waitpid

#Keywords related to Perl modules

do, import, no, package, require, use

#Keywords related to classes and object-orientation

bless, dbmclose, dbmopen, package, ref, tie, tied, untie, use

#Low-level socket functions

accept, bind, connect, getpeername, getsockname, getsockopt, listen, recv, send, setsockopt, shutdown, socket, socketpair

#System V interprocess communication functions

msgctl, msgget, msgrcv, msgsnd, semctl, semget, semop, shmctl, shmget, shmread, shmwrite

#Fetching user and group info

endgrent, endhostent, endnetent, endpwent, getgrent,