linux常用C函数目录

字符测试篇

isalnum

isalpha

isascii

iscntrl

isdigit

isgraphis

islower

isprint

isspace

ispunct

isupper

isxdigit



字符串转换篇

atof

atoi

atol

gcvt

strtod

strtol

strtoul

toascii

tolower

toupper



内存控制篇

calloc

free

getpagesize

malloc

mmap

munmap



日期时间篇

asctime

ctime

gettimeofday

gmtime

localtime

mktime

settimeofday

time



内存及字符串操作篇

bcmp

bcopy

bzero

index

memccpy

memchr

memcmp

memcpy

memmove

memset

rindex

strcasecmp

strcat

strchr

strcmp

strcoll

strcpy

strcspn

strdup

strlen

strncasecmp

strncat

strncpy

strpbrk

strrchr

strspn

strstr

strtok



常用数学函数篇

abs

acos

asin

atan

atan2

ceil

cos

cosh

exp

frexp

ldexp

log

log10

pow

sin

sinh

sqrt

tan

tanh



用户组篇

endgrent

endpwent

endutent

fgetgrent

fgetpwent

getegid

geteuid

getgid

getgrent

getgrgid

getgrnam

getgroups

getpw

getpwent

getpwnam

getpwuid

getuid

getutent

getutid

getutline

initgroups

pututline

seteuid

setfsgid

setfsuid

setgid

setgrent

setgroups

setpwent

setregid

setreuid

setuid

setutent

utmpname



数据结构及算法篇

crypt

bsearch

lfind

lsearch

qsort

rand

srand



文件操作篇

close

creat

dup

dup2

fcntl

flock

fsync

lseek

mkstemp

open

read

sync

write



文件内容操作篇

clearerr

fclose

fdopen

feof

fflush

fgetc

fgets

fileno

fopen

fputc

fputs

fread

freopen

fseek

ftell

fwrite

getc

getchar

gets

mktemp

putc

putchar

rewind

setbuf

setbuffer

setlinebuf

setvbuf

ungetc



进程操作篇

atexit

execl

execlp

execv

execve

execvp

exit

_exit

vfork

getpgid

getpgrp

getpid

getppid

getpriority

nice

on_exit

setpgid

setpgrp

setpriority

system

wait

waitpid

fprintf

fscanf

printf

sacnf

sprintf

sscanf

vfprintf

vfscanf

vprintf

vscanf

vsprintf

vsscanf



文件权限控制篇

access

alphasort

chdir

chmod

chown

chroot

closedir

fchdir

fchmod

fchown

fstat

ftruncate

getcwd

link

lstat

opendir

readdir

readlink

remove

rename

rewinddir

seekdir

stat

symlink

telldir

truncate

umask

unlink

utime

utimes



信号处理篇

alarm

kill

pause

sigaction

sigaddset

sigdelset

sigemptyset

sigfillset

sigismember

signal

sigpending

sigprocmask

sleep

ferror

perror

strerror

mkfifo

pclose

pipe

popen



接口处理篇

accept

bind

connect

endprotoent

endservent

getsockopt

htonl

htons

inet_addr

inet_aton

inet_ntoa

listen

ntohl

ntohs

recv

recvfrom

recvmsg

send

sendmsg

sendto

setprotoent

setservent

setsockopt

shutdown

socket



环境变量篇

getenv

putenv

setenv



终端控制篇

getopt

isatty

select

ttyname

 

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