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C (continued)

close_range(2)close all file descriptors in a given range✨
closedir(3)close a directory✨
closedir(3p)close a directory stream✨
closelog(3)send messages to the system logger✨
closelog(3p)control system log✨
cmp(1p)compare two files✨
cmsg(3)access ancillary data✨
CMSG_ALIGN(3)access ancillary data✨
CMSG_DATA(3)access ancillary data✨
CMSG_FIRSTHDR(3)access ancillary data✨
CMSG_LEN(3)access ancillary data✨
CMSG_NXTHDR(3)access ancillary data✨
CMSG_SPACE(3)access ancillary data✨
colon(1p)null utility✨
comm(1p)select or reject lines common to two files✨
command(1p)execute a simple command✨
complex(7)basics of complex mathematics✨
complex.h(0p)complex arithmetic✨
compress(1p)compress data✨
confstr(3)get configuration dependent string variables✨
confstr(3p)get configurable variables✨
conj(3)calculate the complex conjugate✨
conj(3p)complex conjugate functions✨
conjf(3)calculate the complex conjugate✨
conjl(3)calculate the complex conjugate✨
connect(2)initiate a connection on a socket✨
connect(3p)connect a socket✨
cons.saver(8)general-purpose Linux console screen save and restore server✨
console_codes(4)Linux console escape and control sequences✨
console_ioctl(4)ioctls for console terminal and virtual consoles✨
continue(1p)continue for, while, or until loop✨
copy_file_range(2)Copy a range of data from one file to another✨
copysign(3)copy sign of a number✨
copysign(3p)number manipulation function✨
copysignf(3)copy sign of a number✨
copysignl(3)copy sign of a number✨
core(5)core dump file✨
cos(3)cosine function✨
cos(3p)cosine function✨
cosf(3)cosine function✨
cosh(3)hyperbolic cosine function✨
cosh(3p)hyperbolic cosine functions✨
coshf(3)hyperbolic cosine function✨
coshl(3)hyperbolic cosine function✨
cosl(3)cosine function✨
cosl(3p)cosine function✨
countof(3)count the number of elements in an array✨
cp(1p)copy files✨
cp1251(7)CP 1251 character set encoded in octal, decimal, and hexadecimal✨
cp1252(7)CP 1252 character set encoded in octal, decimal, and hexadecimal✨
cpio.h(0p)cpio archive values✨
cpow(3)complex power function✨
cpow(3p)complex power functions✨
cpowf(3)complex power function✨
cpowl(3)complex power function✨
cproj(3)project into Riemann Sphere✨
cproj(3p)complex projection functions✨
cprojf(3)project into Riemann Sphere✨
cprojl(3)project into Riemann Sphere✨
CPU_ALLOC(3)macros for manipulating CPU sets✨
CPU_ALLOC_SIZE(3)macros for manipulating CPU sets✨
CPU_AND(3)macros for manipulating CPU sets✨
CPU_AND_S(3)macros for manipulating CPU sets✨
CPU_CLR(3)macros for manipulating CPU sets✨
CPU_CLR_S(3)macros for manipulating CPU sets✨
CPU_COUNT(3)macros for manipulating CPU sets✨
CPU_COUNT_S(3)macros for manipulating CPU sets✨
CPU_EQUAL(3)macros for manipulating CPU sets✨
CPU_EQUAL_S(3)macros for manipulating CPU sets✨
CPU_FREE(3)macros for manipulating CPU sets✨
CPU_ISSET(3)macros for manipulating CPU sets✨
CPU_ISSET_S(3)macros for manipulating CPU sets✨
CPU_OR(3)macros for manipulating CPU sets✨
CPU_OR_S(3)macros for manipulating CPU sets✨
CPU_SET(3)macros for manipulating CPU sets✨
CPU_SET_S(3)macros for manipulating CPU sets✨
CPU_XOR(3)macros for manipulating CPU sets✨
CPU_XOR_S(3)macros for manipulating CPU sets✨
CPU_ZERO(3)macros for manipulating CPU sets✨
CPU_ZERO_S(3)macros for manipulating CPU sets✨
cpuid(4)x86 CPUID access device✨
cpuset(7)confine processes to processor and memory node subsets✨
creal(3)get real part of a complex number✨
creal(3p)complex real functions✨
crealf(3)get real part of a complex number✨
creall(3)get real part of a complex number✨
creat(2)open and possibly create a file✨
creat(3p)create a new file or rewrite an existing one✨
create_module(2)create a loadable module entry✨
credentials(7)process identifiers✨
crontab(1p)schedule periodic background work✨
crypt(3)passphrase hashing✨
crypt(3p)string encoding function (CRYPT)✨
crypt_r(3)passphrase hashing✨
csin(3)complex sine function✨
csin(3p)complex sine functions✨
csinf(3)complex sine function✨
csinh(3)complex hyperbolic sine✨
csinh(3p)complex hyperbolic sine functions✨
csinhf(3)complex hyperbolic sine✨
csinhl(3)complex hyperbolic sine✨
csinl(3)complex sine function✨
csinl(3p)complex sine functions✨
csplit(1p)split files based on context✨
csqrt(3)complex square root✨
csqrt(3p)complex square root functions✨
csqrtf(3)complex square root✨
csqrtl(3)complex square root✨
ctags(1p)create a tags file (DEVELOPMENT, FORTRAN)✨
ctan(3)complex tangent function✨
ctan(3p)complex tangent functions✨
ctanf(3)complex tangent function✨
ctanh(3)complex hyperbolic tangent✨
ctanh(3p)complex hyperbolic tangent functions✨
ctanhf(3)complex hyperbolic tangent✨
ctanhl(3)complex hyperbolic tangent✨
ctanl(3)complex tangent function✨
ctanl(3p)complex tangent functions✨
ctermid(3)get controlling terminal name✨
ctermid(3p)generate a pathname for the controlling terminal✨
ctime(3)transform date and time to broken-down time or ASCII✨
ctime(3p)convert a time value to a date and time string✨
ctime_r(3)transform date and time to broken-down time or ASCII✨
ctype.h(0p)character types✨
cuserid(3)get username✨
cut(1p)cut out selected fields of each line of a file✨
cxref(1p)generate a C-language program cross-reference table (DEVELOPMENT)✨

D

daemon(3)run in the background✨
date(1p)write the date and time✨
daylight(3)initialize time conversion information✨
daylight(3p)daylight savings time flag✨
db(3)database access methods✨
dbm_clearerr(3p)database functions✨
dbopen(3)database access methods✨
dd(1p)convert and copy a file✨
ddp(7)Linux AppleTalk protocol implementation✨
delete_module(2)unload a kernel module✨
delta(1p)make a delta (change) to an SCCS file (DEVELOPMENT)✨
des_crypt(3)fast DES encryption✨
DES_FAILED(3)fast DES encryption✨
des_setparity(3)fast DES encryption✨
dev_t(3type)device ID✨
df(1p)report free disk space✨
diff(1p)compare two files✨
diffman-git(1)compare changes to manual pages line by line✨
difftime(3)calculate time difference✨
difftime(3p)compute the difference between two calendar time values✨
dir_colors(5)configuration file for dircolors(1)✨
dirent.h(0p)format of directory entries✨
dirfd(3)get directory stream file descriptor✨
dirfd(3p)extract the file descriptor used by a DIR stream✨
dirname(1p)return the directory portion of a pathname✨
dirname(3)parse pathname components✨
dirname(3p)report the parent directory name of a file pathname✨
div(3)compute quotient and remainder of an integer division✨
div(3p)compute the quotient and remainder of an integer division✨
div_t(3type)quotient and remainder of an integer division✨
dl_iterate_phdr(3)walk through list of shared objects✨
dladdr(3)translate address to symbolic information✨
dladdr1(3)translate address to symbolic information✨
dlclose(3)open and close a shared object✨
dlclose(3p)close a symbol table handle✨
dlerror(3)obtain error diagnostic for functions in the dlopen API✨
dlerror(3p)get diagnostic information✨
dlfcn.h(0p)dynamic linking✨
dlinfo(3)obtain information about a dynamically loaded object✨
dlmopen(3)open and close a shared object✨
dlopen(3)open and close a shared object✨
dlopen(3p)open a symbol table handle✨
dlsym(3)obtain address of a symbol in a shared object or executable✨
dlsym(3p)get the address of a symbol from a symbol table handle✨
dlvsym(3)obtain address of a symbol in a shared object or executable✨
dn_comp(3)resolver routines✨
dn_expand(3)resolver routines✨
dot(1p)execute commands in the current environment✨
double_t(3type)most efficient floating types✨
dprintf(3)formatted output conversion✨
dprintf(3p)print formatted output✨
dqblk(2type)disk quota block✨
dqinfo(2type)disk quota information✨
drand48(3)generate uniformly distributed pseudo-random numbers✨
drand48(3p)generate uniformly distributed pseudo-random numbers✨
drand48_r(3)generate uniformly distributed pseudo- random numbers reentrantly✨
drem(3)floating-point remainder function✨
dremf(3)floating-point remainder function✨
dreml(3)floating-point remainder function✨
dsp56k(4)DSP56001 interface device✨
du(1p)estimate file space usage✨
dup(2)duplicate a file descriptor✨
dup(3p)duplicate an open file descriptor✨
dup2(2)duplicate a file descriptor✨
dup3(2)duplicate a file descriptor✨
duplocale(3)duplicate a locale object✨
duplocale(3p)duplicate a locale object✨
dysize(3)get number of days for a given year✨

E

eaccess(3)check effective user's permissions for a file✨
ecb_crypt(3)fast DES encryption✨
echo(1p)write arguments to standard output✨
ecvt(3)convert a floating-point number to a string✨
ecvt_r(3)convert a floating-point number to a string✨