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rfork(2) -- control new processes
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The fork functions (fork(2), vfork(2), and rfork()) create new processes. The new process (child process) is an exact copy of the calling process (parent process), except as outlined in the fork(2) ma... |
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rmdir(2) -- remove a directory file
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rmdir() removes a directory file whose name is given by path. The directory must not have any entries other than `.' and `..'. |
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sbrk(2) -- change data segment size
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The brk() and sbrk() functions are historical curiosities left over from earlier days before the advent of virtual memory management. The brk() function sets the break or lowest address of a process'... |
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select(2) -- synchronous I/O multiplexing
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select() examines the I/O descriptor sets whose addresses are passed in readfds, writefds, and exceptfds to see if some of their descriptors are ready for reading, are ready for writing, or have an ex... |
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semctl(2) -- semaphore control operations
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The semctl() system call provides a number of control operations on the semaphore specified by semnum and semid. The operation to be performed is specified in cmd (see below). arg is a union of the fo... |
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semget(2) -- get semaphore set
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The semget() system call returns the semaphore identifier associated with key. A new set containing nsems semaphores is created if either key is equal to IPC_PRIVATE, or key does not have a semaphore ... |
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semop(2) -- semaphore operations
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semop() provides a number of atomic operations on a set of semaphores. The semaphore set is specified by semid. sops is an array of semaphore operations, nsops is the number of operations in this arra... |
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send(2) -- send a message from a socket
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send(), sendto(), and sendmsg() are used to transmit a message to another socket. send() may be used only when the socket is in a connected state, while sendto() and sendmsg() may be used at any time.... |
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sendmsg(2) -- send a message from a socket
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send(), sendto(), and sendmsg() are used to transmit a message to another socket. send() may be used only when the socket is in a connected state, while sendto() and sendmsg() may be used at any time.... |
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sendto(2) -- send a message from a socket
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send(), sendto(), and sendmsg() are used to transmit a message to another socket. send() may be used only when the socket is in a connected state, while sendto() and sendmsg() may be used at any time.... |
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setegid(2) -- set user and group ID
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The setuid() function sets the real and effective user IDs and the saved set-user-ID of the current process to the specified value. The setuid() function is permitted if the effective user ID is that ... |
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seteuid(2) -- set user and group ID
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The setuid() function sets the real and effective user IDs and the saved set-user-ID of the current process to the specified value. The setuid() function is permitted if the effective user ID is that ... |
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setgid(2) -- set user and group ID
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The setuid() function sets the real and effective user IDs and the saved set-user-ID of the current process to the specified value. The setuid() function is permitted if the effective user ID is that ... |
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setgroups(2) -- set group access list
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setgroups() sets the group access list of the current user process according to the array gidset. The parameter ngroups indicates the number of entries in the array and must be no more than {NGROUPS_M... |
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setitimer(2) -- get/set value of interval timer
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The system provides each process with three interval timers, defined in . The getitimer() call returns the current value for the timer specified in which in the structure at value. The set... |
