On 06/03/2013 10:48 PM, Carlos E. R. wrote:
I don't see O_DIRECT mentioned in the dd man page :-?
'direct' is a FLAG for iflag and/or oflag: $ man dd | grep direct | head -n 1 direct use direct I/O for data Anyway, for coreutils programs (as for many other GNU projects) the man page is a copy of the --help output, so for details it is better to look into the texinfo manual: $ info coreutils 'dd invocation' `direct' Use direct I/O for data, avoiding the buffer cache. Note that the kernel may impose restrictions on read or write buffer sizes. For example, with an ext4 destination file system and a linux-based kernel, using `oflag=direct' will cause writes to fail with `EINVAL' if the output buffer size is not a multiple of 512. Have a nice day, Berny -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org