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@(#)od.1 8.1 (Berkeley) 6/6/93
$FreeBSD: head/usr.bin/hexdump/od.1 96795 2002-05-17 07:14:55Z tjr $
.Dd April 17, 2002 .Os .Dt OD 1 .Sh NAME .Nm od .Nd octal, decimal, hex, ASCII dump .Sh SYNOPSIS .Nm .Op Fl aBbcDdeFfHhIiLlOosvXx .Op Fl A Ar base .Op Fl j Ar skip .Op Fl N Ar length .Op Fl t Ar type .Sm off .Oo .Op Cm + .Li offset .Op Cm . .Op Cm Bb .Oc .Sm on .Op Ar .Sh DESCRIPTION The .Nm utility is a filter which displays the specified files, or standard input if no files are specified, in a user specified format.
p The options are as follows: l -tag -width Fl t Fl A Ar base Specify the input address base. .Ar base may be one of .Ql d , .Ql o , .Ql x or .Ql n , which specify decimal, octal, hexadecimal addresses or no address, respectively. t Fl a Output named characters. Equivalent to .Fl t Ar a . t Fl B , Fl o Output octal shorts. Equivalent to .Fl t Ar o2 . t Fl b Output octal bytes. Equivalent to .Fl t Ar o1 . t Fl c Output C-style escaped characters. Equivalent to .Fl t Ar c . t Fl D Output unsigned decimal ints. Equivalent to .Fl t Ar u4 . t Fl e , Fl F Output double-precision floating point numbers. Equivalent to .Fl t Ar fD . t Fl f Output single-precision floating point numbers. Equivalent to .Fl t Ar fF . t Fl H , Fl X Output hexadecimal ints. Equivalent to .Fl t Ar x4 . t Fl h , Fl x Output hexadecimal shorts. Equivalent to .Fl t Ar x2 . t Fl I , Fl L , Fl l Output signed decimal longs. Equivalent to .Fl t Ar dL . t Fl i Output signed decimal ints. Equivalent to .Fl t Ar dI . t Fl j Ar skip Skip .Ar skip bytes of the combined input before dumping. The number may be followed by one of .Ql b , .Ql k or .Ql m which specify the units of the number as blocks (512 bytes), kilobytes and megabytes, respectively. t Fl N Ar length Dump at most .Ar length bytes of input. t Fl O Output octal ints. Equivalent to .Fl t Ar o4 . t Fl s Output signed decimal shorts. Equivalent to .Fl t Ar d2 . t Fl t Ar type Specify the output format. .Ar type is a string containing one or more of the following kinds of type specifiers: l -tag -width indent t Cm a Named characters
q Sq ASCII . Control characters are displayed using the following names: l -column 000_nu 001_so 002_st 003_et 004_eo t "000 nul\t001 soh\t002 stx\t003 etx\t004 eot\t005 enq t "006 ack\t007 bel\t008 bs\t009 ht\t00A nl\t00B vt t "00C ff\t00D cr\t00E so\t00F si\t010 dle\t011 dc1 t "012 dc2\t013 dc3\t014 dc4\t015 nak\t016 syn\t017 etb t "018 can\t019 em\t01A sub\t01B esc\t01C fs\t01D gs t "01E rs\t01F us\t020 sp\t0FF del .El t Cm c Characters in the default character set. Non-printing characters are represented as 3-digit octal character codes, except the following characters, which are represented as C escapes: l -column carriage-return \er t NUL Ta \e0 t alert Ta \ea t backspace Ta \eb t newline Ta \en t carriage-return Ta \er t tab Ta \et t vertical tab Ta \ev .El t Cm [d|o|u|x][C|S|I|L| Ns Ar n Ns ] Signed decimal
q Ql d , octal
q Ql o , unsigned decimal
q Ql u or hexadecimal
q Ql x . Followed by an optional size specifier, which may be either .Ql C
q "char" , .Ql S
q "short" , .Ql I
q "int" , .Ql L
q "long" , or a byte count as a decimal integer. t Cm f[F|D|L| Ns Ar n Ns ] Floating-point number. Followed by an optional size specifier, which may be either .Ql F
q "float" , .Ql D
q "double" or .Ql L
q "long double" . .El t Fl v Write all input data, instead of replacing lines of duplicate values with a .Ql * . .El
p Multiple options that specify output format may be used; the output will contain one line for each format.
p If no output format is specified, .Fl t Ar oS is assumed. .Sh DIAGNOSTICS .Ex -std .Sh COMPATIBILITY The traditional .Fl s option to extract string constants is not supported; consider using .Xr strings 1 instead. .Sh SEE ALSO .Xr hexdump 1 , .Xr strings 1 .Sh STANDARDS The .Nm utility conforms to .St -p1003.1-2001 . .Sh HISTORY An .Nm command appeared in .At v1 .