perl 函数

    * 数组：chomp, join, keys, map, pop, push, reverse, shift, sort, splice, split, unshift, values
    * 数据库：dbmclose, dbmopen
    * 目录：chdir, closedir, mkdir, opendir, readdir, rewinddir, rmdir, seekdir, telldir
    * 文件：binmode, chdir, chmod, chown, chroot, close, eof, fnctl, fileno, flock, getc, glob, ioctl, link, lstat, open, print, printf, read, readdir, readlink, rename, rmdir, seek, select, stat, symlink, sysopen, sysread, syswrite, tell, truncate, umask, unlink, utime, write
    * 组：endgrent, getgrent, getgrgid, getgrname, getpgrp, setgrent, setpgrp
    * Hash: delete, each, exists, keys, values
    * 主机：endhostent, gethostbyaddr, gethostbyname, sethostent
    * 输入：getc, read, sysread
    * 处理器间通讯：msgctl, msgget, msgrcv, msgsnd, pipe, semctl, semget, semop, shmctl, shmget, hmread, shmwrite
    * 数学：abs, atan2, cos, exp, hex, int, log, oct, rand, sin, sqrt, srand
    * 消息队列：msgctl, msgget, msgrcv, msgsnd
    * 其他：bless, defined, do, eval, formline, import, ref, scalar, syscall, tie, tied, undef, untie, wantarray
    * 网络：endnetent, getnetbyaddr, getnetbyname, getnetent, setnetent
    * 输出：die, print, printf, syswrite, warn, write
    * 口令：endpwent, getpwent, getpwname, getpwuid, setpwent
    * 进程：alarm, die, dump, exec, exit, fork, getlogin, getpgrp, getppid, getpriority, kill, setpriority, sleep, system, times, umask, wait, waitpid
    * 协议：endprotent, getprotobyname, getprotobynumber, getprotoent, getservbyname, getservbyport, getservent, setprotoent
    * 正则表达式：grep, pos, quotemeta, reset, split, study
    * 范围：caller, local, my
    * 服务：endservent, getservbyname, getservbyport, getservent, setservent
    * 套节字：accept, bind, connect, gethostbyaddr, gethostbyname, gethostent, getpeername, getservbyname, getservbyport, getservent, getsockname, getsockopt, listen, recv, select, send, setsockopt, shutdown, socket, socketpair
    * 字符串：chop, chr, crypt, hex, index, join, lc, lcfirst, length, oct, Ord, pack, q, qq, quotemeta, qw, qx, reverse, rindex, split, sprintf, substr, uc, ucfirst, unpack, vec
    * 时间：gmtime, localtime, time
    * UNIX: chmod, chown, chroot, dump, endgrent, endhostent, endnetent, endprotent, endpwent, endservent, fnctl, fork, getgrent, getgrgid, getgrname, gethostent, getlogin, getnetent, getpgrp, getppid, getpriority, getprotobyname, getprotobynumber, getprotoent, getpwent, getpwname, getpwuid, getservbyname, getservbyport, getservent, ioctl, link, lstat, readlink, select, setgrent, sethostent, setnetent, setpgrp, setpriority, setprotoent, setpwent, setservent, sleep, syscall, times, umask, wait, waitpid
[size=medium][/size]