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raise(2) -- send a signal to a process or a group of processes
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The kill() system call sends a signal to a process or a group of processes, as specified by pid. The signal to be sent is specified by sig and is either one from the list given in signal(2), or 0. The raise() system call sends a signal to the executing program. The signal to be sent is specified by sig and is either one from the list given in signal(2), or 0. If sig is 0 (the null signal), error c... |
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read(2) -- read from file
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The read() function attempts to read nbyte bytes from the file associated with the open file descriptor, fildes, into the buffer pointed to by buf. If nbyte is 0, read() will return 0 and have no other results. On files that support seeking (for example, a regular file), the read() starts at a position in the file given by the file offset associated with fildes. The file offset is incremented by t... |
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readlink(2) -- read the contents of a symbolic link
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The readlink() function places the contents of the symbolic link referred to by path in the buffer buf which has size bufsiz. If the number of bytes in the symbolic link is less than bufsiz, the contents of the remainder of buf are unspecified. In systems conforming to AES standards, the returned string will be null-terminated if the length of the path name string is less than bufsiz. If the lengt... |
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readv(2) -- read from file
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The read() function attempts to read nbyte bytes from the file associated with the open file descriptor, fildes, into the buffer pointed to by buf. If nbyte is 0, read() will return 0 and have no other results. On files that support seeking (for example, a regular file), the read() starts at a position in the file given by the file offset associated with fildes. The file offset is incremented by t... |
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reboot(2) -- boot the system
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reboot() causes the system to reboot. howto is a mask of reboot options (see ), specified as follows: RB_AUTOBOOT A file system sync is performed (unless RB_NOSYNC is set) and the processor is rebooted from the default device and file. RB_HALT The processor is simply halted. A sync of the file system is performed unless the RB_NOSYNC flag is set. RB_HALT should be used with caution. ... |
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recv(2) -- receive a message from a socket
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The recv(), recvfrom(), and recvmsg() system calls are used to receive messages from a socket. s is a socket descriptor from which messages are received. buf is a pointer to the buffer into which the messages are placed. Hewlett-Packard Company - 1 - HP-UX 11i Version 2: August 2003 recv(2) recv(2) len is the maximum number of bytes that can fit in the buffer referenced by buf. If the socket uses ... |
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recvfrom(2) -- receive a message from a socket
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The recv(), recvfrom(), and recvmsg() system calls are used to receive messages from a socket. s is a socket descriptor from which messages are received. buf is a pointer to the buffer into which the messages are placed. Hewlett-Packard Company - 1 - HP-UX 11i Version 2: August 2003 recv(2) recv(2) len is the maximum number of bytes that can fit in the buffer referenced by buf. If the socket uses ... |
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recvmsg(2) -- receive a message from a socket
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The recv(), recvfrom(), and recvmsg() system calls are used to receive messages from a socket. s is a socket descriptor from which messages are received. buf is a pointer to the buffer into which the messages are placed. Hewlett-Packard Company - 1 - HP-UX 11i Version 2: August 2003 recv(2) recv(2) len is the maximum number of bytes that can fit in the buffer referenced by buf. If the socket uses ... |
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rename(2) -- change the name of a file
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The rename() system call causes the source file to be renamed to target. If target exists, it is first removed. Both source and target must be of the same type (that is, either directories or nondirectories), and must reside on the same file system. If target can be created or if it existed before the call, rename() guarantees that an instance of target will exist, even if the system crashes in th... |
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rmdir(2) -- remove a directory file
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The rmdir() system call removes a directory file whose name is given by path. The directory must be empty (except for the files . and ..) before it can be removed. |
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rtprio(2) -- change or read real-time priority
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The rtprio() system call sets or reads the real-time priority of a process. If pid is zero, it specifies the calling process; otherwise, it specifies the process ID of a process. If the process pid contains more than one thread or a lightweight process (that is, the process is multi-threaded), this function shall only change the process scheduling policy and priority. Individual threads or lightwe... |
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rtsched(2) -- real-time scheduling operations
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Summary sched_get_priority_max() Get maximum scheduling policy sched_get_priority_min() Get minimum scheduling policy sched_getparam() Get scheduling parameters of process sched_getscheduler() Get scheduling policy of process sched_rr_get_interval() Get execution time limit for a process sched_setparam() Set scheduling parameters of process sched_setscheduler() Set scheduling policy and parameters... |
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sbrk(2) -- change data segment space allocation
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brk() and sbrk() are used to change dynamically the amount of space allocated for the calling process's data segment; see exec(2). The change is made by resetting the process's break value and allocating the appropriate amount of space. The break value is the address of the first location beyond the end of the data segment. The amount of allocated space increases as the break value increases. Th... |
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sched_getpa(2) -- real-time scheduling operations
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Summary sched_get_priority_max() Get maximum scheduling policy sched_get_priority_min() Get minimum scheduling policy sched_getparam() Get scheduling parameters of process sched_getscheduler() Get scheduling policy of process sched_rr_get_interval() Get execution time limit for a process sched_setparam() Set scheduling parameters of process sched_setscheduler() Set scheduling policy and parameters... |
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sched_getsc(2) -- real-time scheduling operations
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Summary sched_get_priority_max() Get maximum scheduling policy sched_get_priority_min() Get minimum scheduling policy sched_getparam() Get scheduling parameters of process sched_getscheduler() Get scheduling policy of process sched_rr_get_interval() Get execution time limit for a process sched_setparam() Set scheduling parameters of process sched_setscheduler() Set scheduling policy and parameters... |
