2022-04-09 10:30:01 -05:00
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# EKSD
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2024-05-26 17:56:26 -05:00
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[xxd](https://hg.256bit.org/vim/file/tip/src/xxd) is a very good hexdump program that makes editing files on UNIX very easy.
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2022-04-09 10:30:01 -05:00
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It also doesn't support text-tables. Which sucks.
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2024-05-26 17:56:26 -05:00
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[eksd](https://hak.xwx.moe/jadedctrl/eksd) is a clone of a good hexdump program (even matching several arguments
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exactly)… except it supports text-tables.
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## Usage
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To see a hexdump of a file, just run:
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```
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$ eksd $FILE > $HEXDUMP_FILE
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```
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If you want to turn a hexdump (from eksd or xxd) back to a file:
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```
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$ eksd -r $HEXDUMP_FILE > $FILE
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```
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And to make a hexdump with a custom text-table:
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```
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$ eksd -t $TABLE_FILE $FILE > $HEXDUMP_FILE
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```
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Text-tables are in a simple format— one hexcode per line, followed by its
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character. See [./text_tables/*](text_tables/) for examples.
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2022-04-09 10:30:01 -05:00
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By default, eksd uses a built-in *fancy* text-table— it's basic ASCII,
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except it'll print nice pictographics for newline characters, etc. These
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require UTF, of course. If they don't work for you, use the "-a" arg to
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revert to simple, non-fancy ASCII.
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Note that specifying a text-table will override "-a", though.
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## Examples
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Here's a part of Castlevania (EU) for the NES using its text-table:
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```
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$ eksd -t castle-table.txt castlevania.nes | grep -A4 "18e80"
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00018e80: 5454 5454 866e 6854 6460 8486 5454 5454 ....THE.CAST....
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00018e90: 5454 5454 5466 8260 6488 7660 5454 5454 .....DRACULA....
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00018ea0: 5464 6e82 7084 867c 7e6e 6882 5462 6868 .CHRISTOPHER.BEE
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00018eb0: 5454 5454 5454 6668 6086 6e54 5454 5454 ......DEATH.....
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00018ec0: 5454 5462 6876 7c54 7688 6c7c 8470 5454 ...BELO.LUGOSI..
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```
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And here's that same file in [Vim’s](https://www.vim.org) xxd (just because I feel like showing off):
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```
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$ xxd castlevania.nes | grep -A4 "18e80"
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00018e80: 5454 5454 866e 6854 6460 8486 5454 5454 TTTT.nhTd`..TTTT
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00018e90: 5454 5454 5466 8260 6488 7660 5454 5454 TTTTTf.`d.v`TTTT
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00018ea0: 5464 6e82 7084 867c 7e6e 6882 5462 6868 Tdn.p..|~nh.Tbhh
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00018eb0: 5454 5454 5454 6668 6086 6e54 5454 5454 TTTTTTfh`.nTTTTT
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00018ec0: 5454 5462 6876 7c54 7688 6c7c 8470 5454 TTTbhv|Tv.l|.pTT
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```
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## Installation
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Making a binary requires a Lisp (I recommend SBCL) and Quicklisp
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(https://quicklisp.org).
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Put this repository into your `quicklisp/local-projects/`, then run, in your
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lisp interpreter:
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```
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# (ql:quickload '(eksd eksd-unix))
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# (save-lisp-and-die "eksd" :toplevel #'eksd-unix:invoke :executable t)
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```
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And bam, you've made a binary. Cool.
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## Misc
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* License is the GNU GPLv3 (COPYING.txt)
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* Author is Jaidyn Ann <jadedctrl@posteo.at>
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* Sauce is at https://hak.xwx.moe/jadedctrl/eksd
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