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profil(3) -- execution time profile
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This routine provides a means to find out in what areas your program spends most of its time. The argument buf points to bufsiz bytes of core. Every virtual 10 milliseconds, the user's program counte... |
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psignal(3) -- print signal message
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The psignal() function displays a message on stderr consisting of the string s, a colon, a space, and a string describing the signal number sig. If sig is invalid, the message displayed will indicate ... |
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putenv(3) -- change or add an environment variable
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The putenv() function adds or changes the value of environment variables. The argument string is of the form name=value. If name does not already exist in the environment, then string is added to the ... |
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putpwent(3) -- write a password file entry
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The putpwent() function writes a password entry from the structure p in the file associated with stream. The passwd structure is defined in as follows: struct passwd { char *pw_name; /* user n... |
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puts(3) -- output of characters and strings
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fputc() writes the character c, cast to an unsigned char, to stream. fputs() writes the string s to stream, without its trailing '\0'. putc() is equivalent to fputc() except that it may be implemen... |
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putwchar(3) -- write a wide character to standard output
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The putwchar function is the wide-character equivalent of the putchar function. It writes the wide character wc to stdout. If ferror(stdout) becomes true, it returns WEOF. If a wide character conversi... |
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qsort(3) -- sorts an array
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The qsort() function sorts an array with nmemb elements of size size. The base argument points to the start of the array. The contents of the array are sorted in ascending order according to a compari... |
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raise(3) -- send a signal to the current process
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The raise function sends a signal to the current process. It is equivalent to kill(getpid(),sig) |
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rand(3) -- random number generator.
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The rand() function returns a pseudo-random integer between 0 and RAND_MAX. The srand() function sets its argument as the seed for a new sequence of pseudo-random integers to be returned by rand(). Th... |
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random(3) -- random number generator.
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The random() function uses a non-linear additive feedback random number generator employing a default table of size 31 long integers to return successive pseudo-random numbers in the range from 0 to R... |
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rcmd(3) -- routines for returning a stream to a remote command
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The rcmd() function is used by the super-user to execute a command on a remote machine using an authentication scheme based on reserved port numbers. The rresvport() function returns a descriptor to a... |
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readdir(3) -- read a directory
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The readdir() function returns a pointer to a dirent structure representing the next directory entry in the directory stream pointed to by dir. It returns NULL on reaching the end-of-file or if an err... |
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readv(3) -- read or write data into multiple buffers
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The readv() function reads count blocks from the file associated with the file descriptor filedes into the multiple buffers described by vec- tor. The writev() function writes at most count blocks des... |
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realpath(3) -- return the canonicalized absolute pathname
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realpath expands all symbolic links and resolves references to '/./', '/../' and extra '/' characters in the null terminated string named by path and stores the canonicalized absolute pathname i... |
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recno(3) -- record number database access method
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The routine dbopen is the library interface to database files. One of the supported file formats is record number files. The general description of the database access methods is in dbopen(3), this ma... |
