Perl Cd Bookshelf [Electronic resources] نسخه متنی

_exit

Identical to C function _exit(2)

abort

Identical to C function abort(3)

abs

Identical to Perl's abs function

access

Determines accessibility of a file; returns undef
on failure

acos

Identical to C function acos(3)

alarm

Identical to Perl's alarm function

asctime

Identical to C function asctime(3)

asin

Identical to C function asin(3)

assert

Similar to C macro assert(3)

atan

Identical to C function atan(3)

atan2

Identical to Perl's atan2 function

atexit

C-specific; use END {}

atof

C-specific

atoi

C-specific

atol

C-specific

bsearch

Not supplied

calloc

C-specific

ceil

Identical to C function ceil(3)

chdir

Identical to Perl's chdir function

chmod

Identical to Perl's chmod function

chown

Identical to Perl's chown function

clearerr

Uses method FileHandle::clearerr

clock

Identical to C function clock(3)

close

Closes a file; returns undef on failure

closedir

Identical to Perl's closedir
function

cos

Identical to Perl's cos function

cosh

Identical to C function cosh(3)

creat

Creates a new file

ctermid

Generates pathname for the controlling terminal

ctime

Identical to C function ctime(3)

cuserid

Gets user's login name

difftime

Identical to C function difftime(3)

div

C-specific

dup

Similar to C function dup(2); returns
undef on failure

dup2

Similar to C function dup2(2); returns
undef on failure

errno

Returns the value of errno

execl

C-specific; use Perl's exec

execle

C-specific; use Perl's exec

execlp

C-specific; use Perl's exec

execv

C-specific; use Perl's exec

execve

C-specific; use Perl's exec

execvp

C-specific; use Perl's exec

exit

Identical to Perl's exit function

exp

Identical to Perl's exp function

fabs

Identical to Perl's abs function

fclose

Uses method FileHandle::close

fcntl

Identical to Perl's fcntl function

fdopen

Uses method FileHandle::new_from_fd

feof

Uses method FileHandle::eof

ferror

Uses method FileHandle::error

fflush

Uses method FileHandle::flush

fgetc

Uses method FileHandle::getc

fgetpos

Uses method FileHandle::getpos

fgets

Uses method FileHandle::gets

fileno

Uses method FileHandle::fileno

floor

Identical to C function floor(3)

fmod

Identical to C function fmod(3)

fopen

Uses method FileHandle::open

fork

Identical to Perl's fork function

fpathconf

Returns value of a configurable limit on a file or directory, or
undef on failure

fprintf

C-specific; use Perl's printf
function

fputc

C-specific; use Perl's print
function

fputs

C-specific; use Perl's print
function

fread

C-specific; use Perl's read
function

free

C-specific

freopen

C-specific; use Perl's open
function

frexp

Returns mantissa and exponent of a floating-point number

fscanf

C-specific; use <> and regular expressions

fseek

Uses method FileHandle::seek

fsetpos

Uses method FileHandle::setpos

fstat

Gets file status

ftell

Uses method FileHandle::tell

fwrite

C-specific; use Perl's print
function

getc

Identical to Perl's etc function

getchar

Returns one character from STDIN

getcwd

Returns name of current working directory

getegid

Returns effective group ID (gid)

getenv

Returns value of the specified environment variable

geteuid

Returns the effective user ID (uid)

getgid

Returns the user's real group ID (gid)

getgrgid

Identical to Perl's getgrgid
function

getgrnam

Identical to Perl's getgrnam
function

getgroups

Returns IDs of the user's supplementary groups

getlogin

Identical to Perl's getlogin
function

getpgrp

Identical to Perl's getpgrp
function

getpid

Returns ID of the process (pid)

getppid

Identical to Perl's getppid
function

getpwnam

Identical to Perl's getpwnam
function

getpwuid

Identical to Perl's getpwuid
function

gets

Returns one line from STDIN

getuid

Returns user's ID (uid)

gmtime

Identical to Perl's gmtime
function

isalnum

Identical to C function, but can apply to one character or a whole
string

isalpha

Identical to C function, but can apply to one character or a whole
string

isatty

Returns Boolean indicating whether the specified filehandle is
connected to a TTY

iscntrl

Identical to C function, but can apply to one character or a whole
string

isdigit

Identical to C function, but can apply to one character or a whole
string

isgraph

Identical to C function, but can apply to one character or a whole
string

islower

Identical to C function, but can apply to one character or a whole
string

isprint

Identical to C function, but can apply to one character or a whole
string

ispunct

Identical to C function, but can apply to one character or a whole
string

isspace

Identical to C function, but can apply to one character or a whole
string

isupper

Identical to C function, but can apply to one character or a whole
string

isxdigit

Identical to C function, but can apply to one character or a whole
string

kill

Identical to Perl's kill function

labs

C-specific; use Perl's abs
function

ldexp

Identical to C function ldexp(3)

ldiv

C-specific; use division operator (/) and
Perl's int function

link

Identical to Perl's link function

localeconv

Gets numeric formatting information; returns reference to a hash
containing the current locale formatting values

localtime

Identical to Perl's localtime
function

log

Identical to Perl's log function

log10

Identical to C function log10(3)

longjmp

C-specific; use Perl's die
function

lseek

Moves the read/write file pointer; returns undef
on failure

malloc

C-specific

mblen

Identical to C function mblen(3)

mbstowcs

Identical to C function mbstowcs(3)

mbtowc

Identical to C function mbtowc(3)

memchr

C-specific; use Perl's index

memcmp

C-specific; use eq

memcpy

C-specific; use =

memmove

C-specific; use =

memset

C-specific; use x

mkdir

Identical to Perl's mkdir function

mkfifo

Similar to C function mkfifo(2); returns
undef on failure

mktime

Converts date/time information to a calendar time; returns
undef on failure

modf

Returns integral and fractional parts of a floating-point number

nice

Similar to C function nice(3); returns
undef on failure

offsetof

C-specific

open

Opens file for reading or writing; returns undef
on failure

opendir

Opens directory for reading; returns undef on
failure

pathconf

Retrieves value of a configurable limit on a file or directory;
returns undef on failure

pause

Similar to C function pause(3); returns
undef on failure

perror

Identical to C function perror(3)

pipe

Creates an interprocess channel

pow

Computes $x raised to the power
$exponent

printf

Prints specified arguments to STDOUT

putc

C-specific; use Perl's print
function

putchar

C-specific; use Perl's print
function

puts

C-specific; use Perl's print
function

qsort

C-specific; use Perl's sort
function

raise

Sends specified signal to current process

rand

Nonportable; use Perl's rand
function

read

Reads from a file; returns undef on failure

readdir

Identical to Perl's readdir
function

realloc

C-specific

remove

Identical to Perl's unlink
function

rename

Identical to Perl's rename
function

rewind

Seeks to beginning of file

rewinddir

Identical to Perl's rewinddir
function

rmdir

Identical to Perl's rmdir function

scanf

C-specific; use <> and regular expressions

setgid

Sets real group ID for this process

setjmp

C-specific; use eval {}

setlocale

Modifies and queries program's locale

setpgid

Similar to C function setpgid(2); returns
undef on failure

setsid

Identical to C function setsid(8)

setuid

Sets real user ID for this process

sigaction

Detailed signal management; returns undef on
failure

siglongjmp

C-specific; use Perl's die
function

sigpending

Examines blocked, pending signals; returns undef
on failure

sigprocmask

Changes and/or examines this process's signal mask;
returns undef on failure

sigsetjmp

C-specific; use eval {}

sigsuspend

Installs signal mask and suspends process until signal arrives;
returns undef on failure

sin

Identical to Perl's sin function

sinh

Identical to C function sinh(3)

sleep

Identical to Perl's sleep function

sprintf

Identical to Perl's sprintf
function

sqrt

Identical to Perl's sqrt function

srand

Identical to Perl's srand function

sscanf

C-specific; use regular expressions

stat

Identical to Perl's stat function

strcat

C-specific; use .=

strchr

C-specific; use index

strcmp

C-specific; use eq

strcoll

Identical to C function strcoll(3)

strcpy

C-specific; use =

strcspn

C-specific; use regular expressions

strerror

Returns error string for the specified errno

strftime

Converts date and time to string and returns the string

strlen

C-specific; use length

strncat

C-specific; use .= and/or substr

strncmp

C-specific; use eq and/or substr

strncpy

C-specific; use = and/or substr

stroul

C-specific

strpbrk

C-specific

strrchr

C-specific; use rindex and/or
substr

strspn

C-specific

strstr

Identical to Perl's index function

strtod

C-specific

strtok

C-specific

strtol

C-specific

strtoul

C-specific

strxfrm

String transformation; returns the transformed string

sysconf

Retrieves values of system configurable variables; returns
undef on failure

system

Identical to Perl's system
function

tan

Identical to C function tan(3)

tanh

Identical to C function tanh(3)

tcdrain

Similar to C function tcdrain(3); returns
undef on failure

tcflow

Similar to C function tcflow(3); returns
undef on failure

tcflush

Similar to C function tcflush(3); returns
undef on failure

tcgetpgrp

Identical to C function tcgetpgrp(3)

tcsendbreak

Similar to C function tcsendbreak(3); returns
undef on failure

tcsetpgrp

Similar to C function tcsetpgrp(3); returns
undef on failure

time

Identical to Perl's time function

times

Returns, in clock ticks, elapsed realtime since a point in the past,
user and system times for this process, and user and system times for
child processes

tmpfile

Uses method FileHandle::new_tmpfile

tmpnam

Returns a name for a temporary file

tolower

Identical to Perl's lc function

toupper

Identical to Perl's uc function

ttyname

Identical to C function ttyname(3)

tzname

Retrieves time conversion information from the
tzname variable

tzset

Identical to C function tzset(3)

umask

Identical to Perl's umask function

uname

Gets name of current operating system

ungetc

Uses method FileHandle::ungetc

unlink

Identical to Perl's unlink
function

utime

Identical to Perl's utime function

vfprintf

C-specific

vprintf

C-specific

vsprintf

C-specific

wait

Identical to Perl's wait function

waitpid

Waits for child process to change state; identical to
Perl's waitpid function

wcstombs

Identical to C function wcstombs(3)

wctomb

Identical to C function wctomb(3)

write

Writes to file; returns undef on failure