hex
hex calculator
online hex viewer
two's complement
println((al&127)-128);tips
- hexfiend (tip v Casper)
- prima maar antieke hex viewer/editor: [[http://www.chmaas.handshake.de/delphi/freeware/xvi32/xvi32.htm#download|xvi32]]
- [[http://www.suavetech.com/0xed/0xed.html|0xED]] for osx
- [[http://ridiculousfish.com/hexfiend/|hexfiend]]
show hex code(s) of character in bash
echo -n "é" | od -A n -t x1