Hex editing

ascii table

To show an ascii table in hex on the cli do ascii
ASCII tabel. An alternative: The complete table of ASCII characters
UTF-8 table

Conversion

printf ‘%x’ 2097151967232

results in: 1e847ff8000

Conversion between ascii, hex, octal and binary
and
the w3resource Conversion Tools

Command output in hex

Example

echo Hello | xxd -i

Hex editors and viewers

Hex editors / viewers we like:

Name	Remark
ascii	Interactive ascii name and synonym chart
ascii2binary	binary, hex and ascii converter
beav	Binary editor and viewer
bindechexascii	binary, decimal, hex and ascii converter
bless	A full featured hexadecimal editor
bvi	binary file editor based on the vi
dhex	ncurses based hex editor with diff mode
hd, hexdump	Display file contents in hexadecimal, decimal, octal, or ascii
hexer	Vi like interfacing. Can not search in the hexcode
hexcurse (1.55-2)	ncurses based, CTRL+q or :q to exit. A bit primitive. No character instertion, no search and replace
hte	ht (Package name). hte (Program name). Our favorite How to search. Shift-F7 continues a search from cursor
lfhex	Can handle large files. Viewing and editing files in hex, octal, binary or ascii
ncurses-hexedit	Invoke with hexeditor
tweak	Can handle extremely large files
uni2ascii	Convert UTF-8 Unicode to various 7-bit ASCII representations
wxHexEditor	Graphical userinterface. Version 0.22 Beta is incorporated in Debian Wheezy
xxd	Make a hexdump or do the reverse. Comes with vim

Hexer

Remove x0d characters

Open a file

hexer hexfileToEdit.txt

search for hex 0D and replace it with nothing, thus removing it. Ask for confirmation. When satisfied the option always can be selected. Thereby removing all 0D's for the remainder of the document

:s /\x0d//c

Save the file with

:w

Close hexer with

:q

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