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_exit(2)
terminate a process
accept(2)
accept a connection on a socket
access(2)
determine the accessibility of file
acct(2)
turn accounting on or off
adjtime(2)
correct the time to allow synchronization of the system clock
atomic_op(2)
perform test and set operation
audcntl(2)
audit control
audgen(2)
generate an audit record
bind(2)
bind a name to a socket
brk(2), sbrk(2)
change data segment space allocation
cachectl(2)
mark pages cacheable or uncacheable
cacheflush(2)
flush the instruction cache, data cache, or both
chdir(2)
change working directory
chmod(2), fchmod(2)
change mode of file
chown(2), fchown(2)
change owner and group of a file
chroot(2)
change root directory
close(2)
delete a descriptor
connect(2)
initiate a connection on a socket
creat(2)
create a new file
dup(2), dup2(2)
duplicate an open file descriptor
errno(2)
introduction error numbers
execve(2)
execute a file
fcntl(2)
file control
flock(2)
apply or remove an advisory lock on an open file
fork(2)
create a new process
fsync(2)
synchronize a file's in-core state with that on disk
getdirentries(2)
gets directory entries in a generic directory format
getdtablesize(2)
get descriptor table size
getgid(2), getegid(2)
get group identity
getgroups(2)
get group access list
gethostid(2), sethostid(2)
get or set the unique identifier of the current host
gethostname(2), sethostname(2)
get or set the name of the current host
getitimer(2), setitimer(2)
get or set value of interval timer
getmnt(2)
get information about mounted file systems
getpagesize(2)
get system page size
getpeername(2)
get name of connected peer
getpgrp(2)
get process group
getpid(2), getppid(2)
get process identification
getpriority(2), setpriority(2)
get or set program scheduling priority
getrlimit(2), setrlimit(2)
control maximum system resource consumption
getrusage(2)
get information about resource utilization
getsockname(2)
get socket name
getsockopt(2), setsockopt(2)
get or set options on sockets
getsysinfo(2)
get system information
gettimeofday(2), settimeofday(2)
get or set date and time
getuid(2), geteuid(2)
get user identity
intro(2)
introduction to system calls
ioctl(2)
control device
kill(2)
send signal to a process
killpg(2)
send signal to process or process group
link(2)
link to a file
listen(2)
listen for connections on a socket
lseek(2), tell(2)
move read or write pointer
mkdir(2)
make a directory file
mknod(2)
make a directory or a special file
mmap(2)
maps memory of a character device
mount(2), umount(2)
mount or unmount a file system
mprotect(2)
memory protection control
msgctl(2)
message control operations
msgget(2)
get message queue
msgsnd(2), msgrcv(2)
message operations
munmap(2)
unmaps memory of a character device
open(2)
open for reading or writing
pipe(2)
create an interprocess channel
plock(2)
lock or unlock process, text, or data in memory
profil(2)
execution time profile
ptrace(2)
process trace
quota(2)
manipulate disk quotas
read(2), readv(2)
read from a file
readlink(2)
read value of a symbolic link
reboot(2)
reboot system or halt processor
recv(2), recvfrom(2), recvmsg(2)
receive a message from a socket
rename(2)
change the name of a file
rmdir(2)
remove a directory file
screen(2)
gateway packet screening facility
select(2)
synchronous I/O multiplexing
semctl(2)
semaphore control operations
semget(2)
get set of semaphores
semop(2)
semaphore operations
send(2), sendto(2), sendmsg(2)
send a message from a socket
setgroups(2)
set group access list
setpgrp(2)
set process group
setquota(2)
enable/disable quotas on a file system
setregid(2)
set real and effective group ID
setreuid(2)
set real and effective user ID's
setsid(2)
POSIX create session and set process group ID
setsysinfo(2)
set system information
shmctl(2)
shared memory control operations
shmget(2)
get shared memory segment
shmop(2), shmat(2), shmdt(2)
shared memory operations
shutdown(2)
shut down full-duplex connection
sigblock(2)
block signals
sigpause(2)
atomically release blocked signals and wait for interrupt
sigpending(2)
examine pending signals
sigsetmask(2)
set current signal mask
sigstack(2)
set or get signal stack context
sigvec(2)
software signal facilities
socket(2)
create an endpoint for communication
socketpair(2)
create a pair of connected sockets
startcpu(2)
start a CPU
stat(2), lstat(2), fstat(2)
get file status
stopcpu(2)
stop a CPU
swapon(2)
add a swap device for interleaved paging/swapping
symlink(2)
make symbolic link to a file
sync(2)
update super-block
syscall(2)
indirect system call
truncate(2), ftruncate(2)
truncate a file to a specified length
umask(2)
set file creation mask
uname(2)
get name of current system
unlink(2)
remove directory entry
ustat(2)
get file system statistics
utimes(2)
set file times
vfork(2)
spawn new process in a virtual memory-efficient way
vhangup(2)
virtually hang up the current control terminal
wait(2), wait3(2), waitpid(2)
wait for process to terminate
write(2), writev(2)
write on a file
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