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   write.3p    ( 3 )

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Примеры (Examples)

Writing from a Buffer
       The following example writes data from the buffer pointed to by
       buf to the file associated with the file descriptor fd.

           #include <sys/types.h>
           #include <string.h>
           ...
           char buf[20];
           size_t nbytes;
           ssize_t bytes_written;
           int fd;
           ...
           strcpy(buf, "This is a test\n");
           nbytes = strlen(buf);

           bytes_written = write(fd, buf, nbytes);
           ...