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Updated runtime files.

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Bram Moolenaar
2015-07-10 19:31:35 +02:00
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runtime/doc/xxd.man
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@ -1,4 +1,4 @@
XXD(1) XXD(1)
XXD(1) General Commands Manual XXD(1)
@ -14,30 +14,29 @@ DESCRIPTION
xxd creates a hex dump of a given file or standard input. It can also
convert a hex dump back to its original binary form. Like uuencode(1)
and uudecode(1) it allows the transmission of binary data in a `mail-
safe' ASCII representation, but has the advantage of decoding to stan-
safe' ASCII representation, but has the advantage of decoding to stan‐
dard output. Moreover, it can be used to perform binary file patching.
OPTIONS
If no infile is given, standard input is read. If infile is specified
as a `-' character, then input is taken from standard input. If no
If no infile is given, standard input is read. If infile is specified
as a `-' character, then input is taken from standard input. If no
outfile is given (or a `-' character is in its place), results are sent
to standard output.
Note that a "lazy" parser is used which does not check for more than
the first option letter, unless the option is followed by a parameter.
Spaces between a single option letter and its parameter are optional.
Note that a "lazy" parser is used which does not check for more than
the first option letter, unless the option is followed by a parameter.
Spaces between a single option letter and its parameter are optional.
Parameters to options can be specified in decimal, hexadecimal or octal
notation. Thus -c8, -c 8, -c 010 and -cols 8 are all equivalent.
-a | -autoskip
toggle autoskip: A single '*' replaces nul-lines. Default off.
toggle autoskip: A single '*' replaces nul-lines. Default off.
-b | -bits
Switch to bits (binary digits) dump, rather than hexdump. This
option writes octets as eight digits "1"s and "0"s instead of a
normal hexadecimal dump. Each line is preceded by a line number
in hexadecimal and followed by an ascii (or ebcdic) representa-
in hexadecimal and followed by an ascii (or ebcdic) representa‐
tion. The command line switches -r, -p, -i do not work with this
mode.
@ -50,25 +49,34 @@ OPTIONS
to EBCDIC. This does not change the hexadecimal representation.
The option is meaningless in combinations with -r, -p or -i.
-e Switch to little-endian hexdump. This option treats byte groups
as words in little-endian byte order. The default grouping of 4
bytes may be changed using -g. This option only applies to hex‐
dump, leaving the ASCII (or EBCDIC) representation unchanged.
The command line switches -r, -p, -i do not work with this mode.
-g bytes | -groupsize bytes
separate the output of every <bytes> bytes (two hex characters
or eight bit-digits each) by a whitespace. Specify -g 0 to sup-
press grouping. <Bytes> defaults to 2 in normal mode and 1 in
bits mode. Grouping does not apply to postscript or include
style.
or eight bit-digits each) by a whitespace. Specify -g 0 to sup‐
press grouping. <Bytes> defaults to 2 in normal mode, 4 in lit‐
tle-endian mode and 1 in bits mode. Grouping does not apply to
postscript or include style.
-h | -help
print a summary of available commands and exit. No hex dumping
is performed.
-i | -include
output in C include file style. A complete static array defini-
output in C include file style. A complete static array defini‐
tion is written (named after the input file), unless xxd reads
from stdin.
-l len | -len len
stop after writing <len> octets.
-o offset
add <offset> to the displayed file position.
-p | -ps | -postscript | -plain
output in postscript continuous hexdump style. Also known as
plain hexdump style.
@ -76,8 +84,8 @@ OPTIONS
-r | -revert
reverse operation: convert (or patch) hexdump into binary. If
not writing to stdout, xxd writes into its output file without
truncating it. Use the combination -r -p to read plain hexadeci-
mal dumps without line number information and without a particu-
truncating it. Use the combination -r -p to read plain hexadeci‐
mal dumps without line number information and without a particu‐
lar column layout. Additional Whitespace and line-breaks are
allowed anywhere.
@ -101,7 +109,7 @@ OPTIONS
CAVEATS
xxd -r has some builtin magic while evaluating line number information.
If the output file is seekable, then the linenumbers at the start of
each hexdump line may be out of order, lines may be missing, or over-
each hexdump line may be out of order, lines may be missing, or over‐
lapping. In these cases xxd will lseek(2) to the next position. If the
output file is not seekable, only gaps are allowed, which will be
filled by null-bytes.
@ -112,8 +120,8 @@ CAVEATS
input line after reading enough columns of hexadecimal data (see option
-c). This also means, that changes to the printable ascii (or ebcdic)
columns are always ignored. Reverting a plain (or postscript) style
hexdump with xxd -r -p does not depend on the correct number of col-
umns. Here anything that looks like a pair of hex-digits is inter-
hexdump with xxd -r -p does not depend on the correct number of col‐
umns. Here anything that looks like a pair of hex-digits is inter‐
preted.
Note the difference between
@ -218,7 +226,6 @@ EXAMPLES
% stty < /dev/term/b -echo -opost -isig -icanon min 1
% echo -n foo > /dev/term/b
RETURN VALUES
The following error values are returned:
@ -256,7 +263,4 @@ AUTHOR
<tony@sctnugen.ppp.gu.edu.au> <T.Nugent@sct.gu.edu.au>
Small changes by Bram Moolenaar. Edited by Juergen Weigert.
Manual page for xxd August 1996 XXD(1)