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access(2)
determine accessibility of file
acct(2)
turn accounting on or off
alarm(2)
schedule signal after specified time
brk(2), sbrk(2), break(2)
change core allocation
chdir(2), chroot(2)
change default directory
chmod(2)
change mode of file
chown(2)
change owner and group of a file
close(2)
close a file
creat(2)
create a new file
dup(2), dup2(2)
duplicate an open file descriptor
execl(2), execv(2), execle(2), execve(2), execlp(2), execvp(2), exec(2), exece(2), environ(2)
execute a file
exit(2)
terminate process
fork(2)
spawn new process
getpid(2)
get process identification
getuid(2), getgid(2), geteuid(2), getegid(2)
get user and group identity
indir(2)
indirect system call
intro(2), errno(2)
introduction to system calls and error numbers
ioctl(2), stty(2), gtty(2)
control device
kill(2)
send signal to a process
link(2)
link to a file
lock(2)
lock a process in primary memory
lseek(2), tell(2)
move read/write pointer
mknod(2)
make a directory or a special file
mount(2), umount(2)
mount or remove file system
mpx(2)
create and manipulate multiplexed files
mpxcall(2)
multiplexor and channel interface
nice(2)
set program priority
open(2)
open for reading or writing
pause(2)
stop until signal
phys(2)
allow a process to access physical addresses
pipe(2)
create an interprocess channel
pkon(2), pkoff(2)
establish packet protocol
profil(2)
execution time profile
ptrace(2)
process trace
read(2)
read from file
setuid(2), setgid(2)
set user and group ID
signal(2)
catch or ignore signals
stat(2), fstat(2)
get file status
stime(2)
set time
sync(2)
update super-block
time(2), ftime(2)
get date and time
times(2)
get process times
umask(2)
set file creation mode mask
unlink(2)
remove directory entry
utime(2)
set file times
wait(2)
wait for process to terminate
write(2)
write on a file
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