> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> > <HTML> > <HEAD> > <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> > <META NAME="Generator" CONTENT="MS Exchange Server version 5.5.2653.12"> > <TITLE>od -x</TITLE> > </HEAD> > <BODY>
In the future when posting messages to mailing lists it would be most appreciated if you sent your message in plain text format. HTML mail is not appreciated. http://www.expita.com/nomime.html > <P><FONT SIZE=2 FACE="Arial">The od utility doesn't seem to behaving properly. With >the -x option, it reverses bytes e.g. 5245 4f43 when it should be 4552 434f. With no >options, I can detect no correspondence to the actual input data and no pattern >whatsoever. What character is an octal 503? The -c option works, but is not so >useful.</FONT></P> Thank you for your report. However, that is the required behavior depending upon the endianess of the underlying machine. I believe you are mixing up words and bytes. The documentation could be more clear on that point. It seems like you are interested in byte ordering but are using word ordering. The -x option outputs short integers, note integers which is a word and not a byte, in the machine's short integer format. If you are operating on a little endian machine such as an x86 then the bytes appear in 'backwords' order. `-x' Output as hexadecimal shorts. Equivalent to `-tx2'. If you require a specific byte ordering, note bytes not words, then you need to supply a byte specification such as 'od -t x1'. echo abcdefgh > /tmp/letters od -cx /tmp/letters 0000000 a b c d e f g h \n \0 6261 6463 6665 6867 000a 0000011 od -t cx1 /tmp/letters 0000000 a b c d e f g h \n 61 62 63 64 65 66 67 68 0a 0000011 See the online 'info od' documentation for details of the format specification. See the online standards documention for standards conformance information. http://www.unix-systems.org/single_unix_specification_v2/xcu/od.html If you search the web for 'little endian big endian' you should turn up many hits for various documentation on this subject. But for sure you should read this one written by Danny Cohen published in IEEE Computer years ago as it is a classic treatise on the subject. http://www.op.net/docs/RFCs/ien-137 HTH Bob _______________________________________________ Bug-textutils mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/bug-textutils
