System calls (2)

`access`	determine accessibility of a file
`acct`	enable or disable process accounting
`adjtime`	correct the time to allow synchronization of the system clock
`alarm`	set a process alarm clock
`brk`	change data segment space allocation
`chdir`	change working directory
`chmod`	change mode of file
`chown`	change owner and group of a file
`chroot`	change root directory
`close`	close a file descriptor
`creat`	create a new file or rewrite an existing one
`dup`	duplicate an open file descriptor
`exec`	execute a file
`exit`	terminate process
`fcntl`	file control
`fork`	create a new process
`fpathconf`	get configurable pathname variables
`fsync`	synchronize a file's in-memory state with that on the physical medium
`getcontext`	get and set current user context
`getdents`	read directory entries and put in a file system independent format
`getgroups`	get or set supplementary group access list IDs
`getmsg`	get next message off a stream
`getpid`	get process, process group, and parent process IDs
`getrlimit`	control maximum system resource consumption
`getsid`	get session ID
`getuid`	get real user, effective user, real group, and effective group IDs
`intro`	introduction to system calls and error numbers
`ioctl`	control device
`kill`	send a signal to a process or a group of processes
`link`	link to a file
`lseek`	move read/write file pointer
`memcntl`	memory management control
`mincore`	determine residency of memory pages
`mkdir`	make a directory
`mknod`	make a directory, or a special or ordinary file
`mmap`	map pages of memory
`mount`	mount a file system
`mprotect`	set protection of memory mapping
`msgctl`	message control operations
`msgget`	get message queue
`msgop`	message operations
`munmap`	unmap pages of memory.
`nice`	change priority of a time-sharing process
`open`	open for reading or writing
`pause`	suspend process until signal
`pipe`	create an interprocess channel
`plock`	lock into memory or unlock process, text, or data
`poll`	input/output multiplexing
`priocntl`	process scheduler control
`priocntlset`	generalized process scheduler control
`profil`	execution time profile
`ptrace`	process trace
`putmsg`	send a message on a stream
`read`	read from file
`readlink`	read the value of a symbolic link
`rename`	change the name of a file
`rmdir`	remove a directory
`semctl`	semaphore control operations
`semget`	get set of semaphores
`semop`	semaphore operations
`setpgid`	set process group ID
`setpgrp`	set process group ID
`setsid`	set session ID
`setuid`	set user and group IDs
`shmctl`	shared memory control operations
`shmget`	get shared memory segment identifier
`shmop`	shared memory operations
`sigaction`	detailed signal management
`sigaltstack`	set or get signal alternate stack context
`signal`	simplified signal management
`sigpending`	examine signals that are blocked and pending
`sigprocmask`	change or examine signal mask
`sigsend`	send a signal to a process or a group of processes
`sigsuspend`	install a signal mask and suspend process until signal
`stat`	get file status
`statvfs`	get file system information
`stime`	set time
`swapctl`	manage swap space
`symlink`	make a symbolic link to a file
`sync`	update super block
`sysfs`	get file system type information
`sysinfo`	get and set system information strings
`sysm68k`	machine-specific functions
`termios`	general terminal interface
`time`	get time
`times`	get process and child process times
`uadmin`	administrative control
`ulimit`	get and set user limits
`umask`	set and get file creation mask
`umount`	unmount a file system
`uname`	get name of current UNIX system
`unlink`	remove directory entry
`ustat`	get file system statistics
`utime`	set file access and modification times
`vfork`	spawn new process in a virtual memory efficient way
`wait`	wait for child process to stop or terminate
`waitid`	wait for child process to change state
`waitpid`	wait for child process to change state
`write`	write on a file