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-rw-r--r--runtime/doc/xxd.159
1 files changed, 32 insertions, 27 deletions
diff --git a/runtime/doc/xxd.1 b/runtime/doc/xxd.1
index c76f89b..2c00d53 100644
--- a/runtime/doc/xxd.1
+++ b/runtime/doc/xxd.1
@@ -1,4 +1,4 @@
-.TH XXD 1 "August 1996" "Manual page for xxd"
+.TH XXD 1 "May 2024" "Manual page for xxd"
.\"
.\" 21st May 1996
.\" Man page author:
@@ -190,7 +190,8 @@ When editing hex dumps, please note that
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
-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.
+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
@@ -224,7 +225,8 @@ Hex dump from file position 0x100 (=1024\-768) onwards.
\fI% sh \-c "dd of=plain_snippet bs=1k count=1; xxd \-s +\-768 > hex_snippet" < file\fR
.PP
However, this is a rare situation and the use of `+' is rarely needed.
-The author prefers to monitor the effect of xxd with strace(1) or truss(1), whenever \-s is used.
+The author prefers to monitor the effect of xxd with strace(1) or truss(1),
+whenever \-s is used.
.SH EXAMPLES
.PP
.br
@@ -239,22 +241,25 @@ Print 3 lines (hex 0x30 bytes) from the end of
.br
\fI% xxd \-s \-0x30 file\fR
.PP
+Note: The results of the examples below are relevant to the xxd.1 man page as of
+May 2024
+.PP
.br
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
-2e54482058584420312022417567757374203139
+2e544820585844203120224d6179203230323422
.br
-39362220224d616e75616c207061676520666f72
+20224d616e75616c207061676520666f72207878
.br
-20787864220a2e5c220a2e5c222032317374204d
+64220a2e5c220a2e5c222032317374204d617920
.br
-617920313939360a2e5c22204d616e2070616765
+313939360a2e5c22204d616e2070616765206175
.br
-20617574686f723a0a2e5c2220202020546f6e79
+74686f723a0a2e5c2220202020546f6e79204e75
.br
-204e7567656e74203c746f6e79407363746e7567
+67656e74203c746f6e79407363746e7567656e2e
.br
.br
@@ -262,32 +267,32 @@ 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
-0000000: 2e54 4820 5858 4420 3120 2241 .TH XXD 1 "A
+00000000: 2e54 4820 5858 4420 3120 224d .TH XXD 1 "M
.br
-000000c: 7567 7573 7420 3139 3936 2220 ugust 1996"
+0000000c: 6179 2032 3032 3422 2022 4d61 ay 2024" "Ma
.br
-0000018: 224d 616e 7561 6c20 7061 6765 "Manual page
+00000018: 6e75 616c 2070 6167 6520 666f nual page fo
.br
-0000024: 2066 6f72 2078 7864 220a 2e5c for xxd"..\\
+00000024: 7220 7878 6422 0a2e 5c22 0a2e r xxd"..\\"..
.br
-0000030: 220a 2e5c 2220 3231 7374 204d "..\\" 21st M
+00000030: 5c22 2032 3173 7420 4d61 7920 \\" 21st May
.br
-000003c: 6179 2031 3939 360a 2e5c 2220 ay 1996..\\"
+0000003c: 3139 3936 0a2e 5c22 204d 616e 1996..\\" Man
.br
-0000048: 4d61 6e20 7061 6765 2061 7574 Man page aut
+00000048: 2070 6167 6520 6175 7468 6f72 page author
.br
-0000054: 686f 723a 0a2e 5c22 2020 2020 hor:..\\"
+00000054: 3a0a 2e5c 2220 2020 2054 6f6e :..\\" Ton
.br
-0000060: 546f 6e79 204e 7567 656e 7420 Tony Nugent
+00000060: 7920 4e75 6765 6e74 203c 746f y Nugent <to
.br
-000006c: 3c74 6f6e 7940 7363 746e 7567 <tony@sctnug
+0000006c: 6e79 4073 6374 6e75 6765 6e2e ny@sctnugen.
.PP
.br
Display just the date from the file xxd.1
.br
-\fI% xxd \-s 0x36 \-l 13 \-c 13 xxd.1\fR
+\fI% xxd \-s 0x33 \-l 13 \-c 13 xxd.1\fR
.br
-0000036: 3231 7374 204d 6179 2031 3939 36 21st May 1996
+00000033: 3231 7374 204d 6179 2031 3939 36 21st May 1996
.PP
.br
Copy
@@ -302,11 +307,11 @@ and prepend 100 bytes of value 0x00.
.br
Patch the date in the file xxd.1
.br
-\fI% echo "0000037: 3574 68" | xxd \-r \- xxd.1\fR
+\fI% echo "0000034: 3574 68" | xxd \-r \- xxd.1\fR
.br
-\fI% xxd \-s 0x36 \-l 13 \-c 13 xxd.1\fR
+\fI% xxd \-s 0x33 \-l 13 \-c 13 xxd.1\fR
.br
-0000036: 3235 7468 204d 6179 2031 3939 36 25th May 1996
+00000033: 3235 7468 204d 6179 2031 3939 36 25th May 1996
.PP
.br
Create a 65537 byte file with all bytes 0x00,
@@ -319,11 +324,11 @@ Hex dump this file with autoskip.
.br
\fI% xxd \-a \-c 12 file\fR
.br
-0000000: 0000 0000 0000 0000 0000 0000 ............
+00000000: 0000 0000 0000 0000 0000 0000 ............
.br
*
.br
-000fffc: 0000 0000 40 ....A
+0000fffc: 0000 0000 41 ....A
.PP
Create a 1 byte file containing a single 'A' character.
The number after '\-r \-s' adds to the line numbers found in the file;
@@ -388,7 +393,7 @@ 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
-This manual page documents xxd version 1.7
+This manual page documents xxd version 1.7 from 2024-05.
.SH AUTHOR
.br
(c) 1990-1997 by Juergen Weigert