Perl: How To Use PERL's Important Methods And FunctionsHere are Perl\'s functions (including things that look like functions, like some of the keywords and named operators) arranged by category. Some functions appear in more than one place.Functions for SCALARs or strings chomp, chop, chr, crypt, hex, index, lc, lcfirst, length, oct, ord, pack, qSTRING, qqSTRING, reverse, rindex, sprintf, substr, tr, uc, ucfirst, y Regular expressions and pattern matching m, pos, quotemeta, s, split, study Numeric functions abs, atan2, cos, exp, hex, int, log, oct, rand, sin, sqrt, srand Functions for real @ARRAYs pop, push, shift, splice, unshift Functions for list data grep, join, map, qw/STRING/, 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, rewinddir, seek, seekdir, select, syscall, sysread, sysseek, syswrite, tell, telldir, truncate, warn, write Functions for fixed length data or records pack, read, syscall, sysread, 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, umask, unlink, utime, -r, -w, -x, -o, -R, -W, -X, -O, -e, -z, -s, -f, -d, -l, -p, -S, -b, -c, -t, -u, -g, -k, -T, -B, -M, -A, -C, Keywords related to the control flow of your perl program caller, continue, die, do, dump, eval, exit, goto, last, next, redo, return, sub, wantarray Keywords related to scoping caller, import, local, my, package, use Miscellaneous functions defined, dump, eval, formline, local, my, reset, scalar, undef, wantarray Functions for processes and process groups alarm, exec, fork, getpgrp, getppid, getpriority, kill, pipe, qx/STRING/, setpgrp, setpriority, sleep, system, times, wait, waitpid Keywords related to perl modules do, import, no, package, require, use Keywords related to classes and object-orientedness 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, getgrgid, getgrnam, getlogin, getpwent, getpwnam, getpwuid, setgrent, setpwent Fetching network info endprotoent, endservent, gethostbyaddr, gethostbyname, gethostent, getnetbyaddr, getnetbyname, getnetent, getprotobyname, getprotobynumber, getprotoent, getservbyname, getservbyport, getservent, sethostent, setnetent, setprotoent, setservent Time-related functions gmtime, localtime, time, times Functions new in perl5 abs, bless, chomp, chr, exists, formline, glob, import, lc, lcfirst, map, my, no, prototype, qx, qw, readline, readpipe, ref, sub*, sysopen, tie, tied, uc, ucfirst, untie, use * - sub was a keyword in perl4, but in perl5 it is an operator which can be used in expressions. Functions obsoleted in perl5 dbmclose, dbmopen, |
