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Merge pull request #153 from vim-jp/update-for-9.0.1833
Update for 9.0.1833
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Original file line number | Diff line number | Diff line change |
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|
@@ -6,7 +6,7 @@ | |
.\" Changes by Bram Moolenaar <[email protected]> | ||
.SH NAME | ||
.I xxd | ||
\- make a hexdump or do the reverse. | ||
\- make a hex dump or do the reverse. | ||
.SH SYNOPSIS | ||
.B xxd | ||
\-h[elp] | ||
|
@@ -57,20 +57,20 @@ are all equivalent. | |
.PP | ||
.TP | ||
.IR \-a " | " \-autoskip | ||
Toggle autoskip: A single '*' replaces nul-lines. Default off. | ||
Toggle autoskip: A single '*' replaces NUL-lines. Default off. | ||
.TP | ||
.IR \-b " | " \-bits | ||
Switch to bits (binary digits) dump, rather than hexdump. | ||
Switch to bits (binary digits) dump, rather than hex dump. | ||
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) representation. The command line switches | ||
\-r, \-p, \-i do not work with this mode. | ||
followed by an ASCII (or EBCDIC) representation. The command line switches | ||
\-p, \-i do not work with this mode. | ||
.TP | ||
.IR "\-c cols " | " \-cols cols" | ||
Format | ||
.RI < cols > | ||
octets per line. Default 16 (\-i: 12, \-ps: 30, \-b: 6). Max 256. | ||
No maxmimum for \-ps. With \-ps, 0 results in one long line of output. | ||
No maximum for \-ps. With \-ps, 0 results in one long line of output. | ||
.TP | ||
.IR \-C " | " \-capitalize | ||
Capitalize variable names in C include file style, when using \-i. | ||
|
@@ -81,25 +81,25 @@ This does not change the hexadecimal representation. The option is | |
meaningless in combinations with \-r, \-p or \-i. | ||
.TP | ||
.IR \-e | ||
Switch to little-endian hexdump. | ||
Switch to little-endian hex dump. | ||
This option treats byte groups as words in little-endian byte order. | ||
The default grouping of 4 bytes may be changed using | ||
.RI "" \-g . | ||
This option only applies to hexdump, leaving the ASCII (or EBCDIC) | ||
This option only applies to the hex dump, leaving the ASCII (or EBCDIC) | ||
representation unchanged. | ||
The command line switches | ||
\-r, \-p, \-i do not work with this mode. | ||
.TP | ||
.IR "\-g bytes " | " \-groupsize bytes" | ||
Separate the output of every | ||
.RI < bytes > | ||
bytes (two hex characters or eight bit-digits each) by a whitespace. | ||
bytes (two hex characters or eight bit digits each) by a whitespace. | ||
Specify | ||
.I \-g 0 | ||
to suppress grouping. | ||
.RI < Bytes "> defaults to " 2 | ||
in normal mode, \fI4\fP in little-endian mode and \fI1\fP in bits mode. | ||
Grouping does not apply to postscript or include style. | ||
Grouping does not apply to PostScript or include style. | ||
.TP | ||
.IR \-h " | " \-help | ||
Print a summary of available commands and exit. No hex dumping is performed. | ||
|
@@ -123,24 +123,37 @@ Add | |
to the displayed file position. | ||
.TP | ||
.IR \-p " | " \-ps " | " \-postscript " | " \-plain | ||
Output in postscript continuous hexdump style. Also known as plain hexdump | ||
Output in PostScript continuous hex dump style. Also known as plain hex dump | ||
style. | ||
.TP | ||
.IR \-r " | " \-revert | ||
Reverse operation: convert (or patch) hexdump into binary. | ||
Reverse operation: convert (or patch) hex dump into binary. | ||
If not writing to stdout, xxd writes into its output file without truncating | ||
it. Use the combination | ||
.I \-r \-p | ||
to read plain hexadecimal dumps without line number information and without a | ||
particular column layout. Additional Whitespace and line-breaks are allowed | ||
anywhere. | ||
particular column layout. Additional whitespace and line breaks are allowed | ||
anywhere. Use the combination | ||
.I \-r \-b | ||
to read a bits dump instead of a hex dump. | ||
.TP | ||
.IR \-R " " when | ||
In output the hex-value and the value are both colored with the same color | ||
depending on the hex-value. Mostly helping to differentiate printable and | ||
non-printable characters. | ||
.I \fIwhen\fP | ||
is | ||
.BR never ", " always ", or " auto . | ||
When the | ||
.BR $NO_COLOR | ||
environment variable is set, colorization will be disabled. | ||
.TP | ||
.I \-seek offset | ||
When used after | ||
.IR \-r : | ||
revert with | ||
.RI < offset > | ||
added to file positions found in hexdump. | ||
added to file positions found in hex dump. | ||
.TP | ||
.I \-s [+][\-]seek | ||
Start at | ||
|
@@ -153,28 +166,28 @@ should be that many characters from the end of the input (or if combined with | |
Without \-s option, xxd starts at the current file position. | ||
.TP | ||
.I \-u | ||
Use upper case hex letters. Default is lower case. | ||
Use upper-case hex letters. Default is lower-case. | ||
.TP | ||
.IR \-v " | " \-version | ||
Show version string. | ||
.SH CAVEATS | ||
.PP | ||
.I 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 overlapping. In | ||
has some built-in magic while evaluating line number information. | ||
If the output file is seekable, then the line numbers at the start of each | ||
hex dump line may be out of order, lines may be missing, or overlapping. 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. | ||
.PP | ||
.I xxd \-r | ||
never generates parse errors. Garbage is silently skipped. | ||
.PP | ||
When editing hexdumps, please note that | ||
When editing hex dumps, please note that | ||
.I xxd \-r | ||
skips everything on the 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 columns. Here anything that looks like a pair of hex-digits is interpreted. | ||
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 | ||
hex dump with xxd \-r \-p does not depend on the correct number of columns. Here, anything that looks like a pair of hex digits is interpreted. | ||
.PP | ||
Note the difference between | ||
.br | ||
|
@@ -190,20 +203,20 @@ may be different from | |
as lseek(2) is used to "rewind" input. A '+' | ||
makes a difference if the input source is stdin, and if stdin's file position | ||
is not at the start of the file by the time xxd is started and given its input. | ||
The following examples may help to clarify (or further confuse!)... | ||
The following examples may help to clarify (or further confuse!): | ||
.PP | ||
Rewind stdin before reading; needed because the `cat' has already read to the | ||
end of stdin. | ||
.br | ||
\fI% sh \-c "cat > plain_copy; xxd \-s 0 > hex_copy" < file\fR | ||
.PP | ||
Hexdump from file position 0x480 (=1024+128) onwards. | ||
Hex dump from file position 0x480 (=1024+128) onwards. | ||
The `+' sign means "relative to the current position", thus the `128' adds to | ||
the 1k where dd left off. | ||
.br | ||
\fI% sh \-c "dd of=plain_snippet bs=1k count=1; xxd \-s +128 > hex_snippet" < file\fR | ||
.PP | ||
Hexdump from file position 0x100 ( = 1024\-768) on. | ||
Hex dump from file position 0x100 (=1024\-768) onwards. | ||
.br | ||
\fI% sh \-c "dd of=plain_snippet bs=1k count=1; xxd \-s +\-768 > hex_snippet" < file\fR | ||
.PP | ||
|
@@ -224,7 +237,7 @@ Print 3 lines (hex 0x30 bytes) from the end of | |
\fI% xxd \-s \-0x30 file\fR | ||
.PP | ||
.br | ||
Print 120 bytes as continuous hexdump with 20 octets per line. | ||
Print 120 bytes as a continuous hex dump with 20 octets per line. | ||
.br | ||
\fI% xxd \-l 120 \-ps \-c 20 xxd.1\fR | ||
.br | ||
|
@@ -242,7 +255,7 @@ Print 120 bytes as continuous hexdump with 20 octets per line. | |
.br | ||
|
||
.br | ||
Hexdump the first 120 bytes of this man page with 12 octets per line. | ||
Hex dump the first 120 bytes of this man page with 12 octets per line. | ||
.br | ||
\fI% xxd \-l 120 \-c 12 xxd.1\fR | ||
.br | ||
|
@@ -299,7 +312,7 @@ except for the last one which is 'A' (hex 0x41). | |
\fI% echo "010000: 41" | xxd \-r > file\fR | ||
.PP | ||
.br | ||
Hexdump this file with autoskip. | ||
Hex dump this file with autoskip. | ||
.br | ||
\fI% xxd \-a \-c 12 file\fR | ||
.br | ||
|
@@ -310,26 +323,26 @@ Hexdump this file with autoskip. | |
000fffc: 0000 0000 40 ....A | ||
.PP | ||
Create a 1 byte file containing a single 'A' character. | ||
The number after '\-r \-s' adds to the linenumbers found in the file; | ||
The number after '\-r \-s' adds to the line numbers found in the file; | ||
in effect, the leading bytes are suppressed. | ||
.br | ||
\fI% echo "010000: 41" | xxd \-r \-s \-0x10000 > file\fR | ||
.PP | ||
Use xxd as a filter within an editor such as | ||
.B vim(1) | ||
to hexdump a region marked between `a' and `z'. | ||
to hex dump a region marked between `a' and `z'. | ||
.br | ||
\fI:'a,'z!xxd\fR | ||
.PP | ||
Use xxd as a filter within an editor such as | ||
.B vim(1) | ||
to recover a binary hexdump marked between `a' and `z'. | ||
to recover a binary hex dump marked between `a' and `z'. | ||
.br | ||
\fI:'a,'z!xxd \-r\fR | ||
.PP | ||
Use xxd as a filter within an editor such as | ||
.B vim(1) | ||
to recover one line of a hexdump. Move the cursor over the line and type: | ||
to recover one line of a hex dump. Move the cursor over the line and type: | ||
.br | ||
\fI!!xxd \-r\fR | ||
.PP | ||
|
@@ -348,8 +361,9 @@ The following error values are returned: | |
no errors encountered. | ||
.TP | ||
\-1 | ||
operation not supported ( | ||
.I xxd \-r \-i | ||
operation not supported | ||
\%(\c | ||
.I \%xxd \-r \-i | ||
still impossible). | ||
.TP | ||
1 | ||
|
@@ -367,7 +381,7 @@ desired seek position is unreachable. | |
uuencode(1), uudecode(1), patch(1) | ||
.br | ||
.SH WARNINGS | ||
The tools weirdness matches its creators brain. | ||
The tool's weirdness matches its creator's brain. | ||
Use entirely at your own risk. Copy files. Trace it. Become a wizard. | ||
.br | ||
.SH VERSION | ||
|
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