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| author | Ondrej Oprala | 2014-01-21 17:13:56 +0100 |
|---|---|---|
| committer | Karel Zak | 2014-02-10 16:01:37 +0100 |
| commit | 098ab0778f5a46ab4519c8404fd4ba8ec137368b (patch) | |
| tree | 62e319ce561e1b9e725312ae66d7f4d7d28824ea /text-utils/hexdump.1 | |
| parent | lib/color: add colorscheme parser (diff) | |
| download | kernel-qcow2-util-linux-098ab0778f5a46ab4519c8404fd4ba8ec137368b.tar.gz kernel-qcow2-util-linux-098ab0778f5a46ab4519c8404fd4ba8ec137368b.tar.xz kernel-qcow2-util-linux-098ab0778f5a46ab4519c8404fd4ba8ec137368b.zip | |
hexdump: add highlighting support
[kzak@redhat.com: - fix coding style,
- use xalloc in all code,
- fix strtol usage]
Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'text-utils/hexdump.1')
| -rw-r--r-- | text-utils/hexdump.1 | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/text-utils/hexdump.1 b/text-utils/hexdump.1 index e8afdbac8..8b4bf275d 100644 --- a/text-utils/hexdump.1 +++ b/text-utils/hexdump.1 @@ -235,6 +235,37 @@ displayed using the following, lower-case, names. Characters greater than 018 can 019 em 01A sub 01B esc 01C fs 01D gs 01E rs 01F us 0FF del .nf +.SS Colors +When put at the end of a format specifier, hexdump highlights the respective +string with the color specified. Conditions, if present, are evaluated +prior to highlighting. +.TP +.B \&_L[color_unit_1,color_unit_2,...,color_unit_n] +.TP +The full syntax of a color unit is as follows: +.TP +.B [!]COLOR[:HEX_VAL|:OCT_VAL|:STRING][@DEC_OFFT|@DEC_OFFT_START-DEC_OFFT_END] +.TP +.B ! +Negate the condition. Please note that it only makes sense to negate +a unit if both a value/string and an offset are specified. In that case +the respective output string will be highlighted if and only if the value/string +does not match the one at the offset. +.PP +.BR COLOR +One of the 8 basic shell colors. +.PP +.BR HEX_VAL , OCT_VAL +A value to be matched specified in hexadecimal or octal base. +.PP +.BR STRING +A string to be matched. Please note that the usual C escape sequences +are not interpreted by hexdump inside the color_units. +.PP +.BR DEC_OFFT , DEC_OFFT_START , DEC_OFFT_END +An offset or an offset range at which +to check for a match. Please note that DEC_OFFT is equal to DEC_OFFT-DEC_OFFT. +Also, the range may not be larger than the respective format byte count. .SS Counters The default and supported byte counts for the conversion characters are as follows: @@ -313,6 +344,13 @@ Implement the \-x option: "%07.7_Ax\en" "%07.7_ax " 8/2 "%04x " "\en" .nf +.PP +MBR Boot Signature example: +Highlight the addresses cyan and the bytes at offsets 510 and 511 green if their value is 0xAA55, red otherwise. +.nf + "%07.7_Ax_L[cyan]\en" + "%07.7_ax_L[cyan] " 8/2 " %04x_L[green:0xAA55@510-511,!red:0xAA55@510-511] " "\en" +.nf .SH STANDARDS The .B hexdump |