access(2) access: determine accessibility of file. acct(2) acct: turn accounting on or off. alarm(2) alarm: schedule signal after specified time. brk(2) brk, sbrk, break: change core allocation. chdir(2) chdir: change current working directory. chmod(2) chmod: change mode of file. chown(2) chown: change owner and group of a file. close(2) close: close a file. creat(2) creat: create a new file. dup(2) dup, dup2: duplicate an open file descriptor. exec(2) execl, execv, execle, execve, execlp, execvp, exec, exece, environ: execute a file. exit(2) exit: terminate process. fork(2) fork: spawn new process. getpid(2) getpid: get process identification. getuid(2) getuid, getgid, geteuid, getegid: get user and group identity. intro(2) intro, errno: introduction to system calls and error numbers. ioctl(2) ioctl, stty, gtty: control device. kill(2) kill: send signal to a process. killpg(2j) killpg: send signal to a process or a process group. link(2) link: link to a file. lseek(2) lseek, tell: move read/write pointer. mknod(2) mknod: make a directory or a special file. mount(2) mount, umount: mount or remove file system. mpx(2) mpx: create and manipulate multiplexed files. nice(2) nice: set program priority. open(2) open: open for reading or writing. pause(2) pause: stop until signal. pipe(2) pipe: create an interprocess channel. profil(2) profil: execution time profile. ptrace(2) ptrace: process trace. read(2) read: read from file. reboot(2v) reboot: reboot system or halt processor. setpgrp(2j) setpgrp, getpgrp: set/get process group. setuid(2) setuid, setgid: set user and group ID. signal(2) signal: catch or ignore signals. sigsys(2j) sigsys: catch or ignore signals. stat(2) stat, fstat: get file status. stime(2) stime: set time. sync(2) sync: update super-block. syscall(2) syscall: indirect system call. time(2) time, ftime: get date and time. times(2) times: get process times. umask(2) umask: set file creation mode mask. unlink(2) unlink: remove directory entry. utime(2) utime: set file times. vadvise(2v) vadvise: give advice to paging system. vfork(2v) vfork: spawn new process in a virtual memory efficient way. vhangup(2v) vhangup: virtually ``hangup'' the current control terminal. vlimit(2v) vlimit: control maximum system resource consumption. vread(2v) vread: read virtually. vswapon(2v) vswapon: add a swap device for interleaved paging/swapping. vtimes(2v) vtimes: get information about resource utilization. vwrite(2v) vwrite: write (virtually) to file. wait(2) wait: wait for process to terminate. wait3(2j) wait3: wait for process to terminate. write(2) write: write on a file.