08-17-2006
output string message to pipe
i am new to linux programming. can anyone answer my question?
there is one pipe file "my_pipe"
prw-r--r-- 1 john rnd 32 Aug 17 19:45 my_pipe
how to output string message (char*) to this pipe? which API should I use?
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LEARN ABOUT DEBIAN
dar_slave
DAR_SLAVE(1) General Commands Manual DAR_SLAVE(1)
NAME
dar_slave - disk archive slave for remote access to a dar archive
SYNOPSIS
dar_slave [options] [<path>/]source
dar_slave -h
dar_slave -V
DESCRIPTION
dar_slave reads an archive and listens for dar orders on standard input, sending asked parts of the archive on standard output.
Source is the basename of the archive to read. By default, dar_slave uses standard input and output to communicate with a dar process,
which may be running on the local host or on a remote host. It is possible to change the behavior of dar_slave to use named pipe instead of
standard input and output
OPTIONS
-h Displays help usage.
-V Displays version information.
-i <filename> reads the orders from the named file instead of standard input. In most cases the filename will be a named pipe.
-o <filename> sends the data to the named file <filename> instead of standard output. In most cases the filename will be a named
pipe.
-E <string> string is a command to be launched between slices. See dar(1) man page (same option) for more information.
-Q Do not display any message on stderr when not launched from a terminal (for example when launched from an at job or
crontab). Remains that any question to the user will be assumed a 'no' answer, which most of the time will abort the
program.
-j when virtual memory is exhausted, as user to make room before trying to continue. By default, when memory is exhausted
dar aborts.
-; <num> Defines the minimum number of digits to use for archive slice numbers. See the same option in dar man page for more
details.
EXIT CODES
dar_slaves exists with the same codes as dar does, see dar(1) man page.
SIGNALS
Any signal sent to dar_slave will abort the program immediately, there is no way to have a proper termination before the end of the process
SEE ALSO
dar(1), dar_xform(1), dar_manager(1), dar_cp(1)
KNOWN BUGS
None actually.
AUTHOR
http://dar.linux.free.fr/
Denis Corbin
France
Europe
3rd Berkeley Distribution March 3rd, 2012 DAR_SLAVE(1)