Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Another binary manipulation thread.
Top Forums UNIX for Advanced & Expert Users Another binary manipulation thread. Post 302846339 by DGPickett on Friday 23rd of August 2013 02:10:33 PM
Old 08-23-2013
Reading the bash man page, 'read -n 1' looks like a nice start. I am not sure what happens when you read a line feed or white space, so I guess I have to try it. I wrote all256 to put out bytes 0x00 through 0xff.
Code:
$ all256|while read -n 1 c
> do
>  echo read "'$c'"
> done
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read '
read ''
read ''
read '
      '
read '
      '
'ead '
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read '
read ''
read ''
read ''
read ''
read ''
read '!'
read '"'
read '#'
read '$'
read '%'
read '&'
read '''
read '('
read ')'
read '*'
read '+'
read ','
read '-'
read '.'
read '/'
read '0'
read '1'
read '2'
read '3'
read '4'
read '5'
read '6'
read '7'
read '8'
read '9'
read ':'
read ';'
read '<'
read '='
read '>'
read '?'
read '@'
read 'A'
read 'B'
read 'C'
read 'D'
read 'E'
read 'F'
read 'G'
read 'H'
read 'I'
read 'J'
read 'K'
read 'L'
read 'M'
read 'N'
read 'O'
read 'P'
read 'Q'
read 'R'
read 'S'
read 'T'
read 'U'
read 'V'
read 'W'
read 'X'
read 'Y'
read 'Z'
read '['
read ']'
read '^'
read '_'
read '`'
read 'a'
read 'b'
read 'c'
read 'd'
read 'e'
read 'f'
read 'g'
read 'h'
read 'i'
read 'j'
read 'k'
read 'l'
read 'm'
read 'n'
read 'o'
read 'p'
read 'q'
read 'r'
read 's'
read 't'
read 'u'
read 'v'
read 'w'
read 'x'
read 'y'
read 'z'
read '{'
read '|'
read '}'
read '~'
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ''
read ' '
read '¡'
read '¢'
read '£'
read '¤'
read '¥'
read '¦'
read '§'
read '¨'
read '©'
read 'ª'
read '«'
read '¬'
read '­'
read '®'
read '¯'
read '°'
read '±'
read '²'
read '³'
read '´'
read 'µ'
read '¶'
read '·'
read '¸'
read '¹'
read 'º'
read '»'
read '¼'
read '½'
read '¾'
read '¿'
read 'À'
read 'Á'
read 'Â'
read 'Ã'
read 'Ä'
read 'Å'
read 'Æ'
read 'Ç'
read 'È'
read 'É'
read 'Ê'
read 'Ë'
read 'Ì'
read 'Í'
read 'Î'
read 'Ï'
read 'Ð'
read 'Ñ'
read 'Ò'
read 'Ó'
read 'Ô'
read 'Õ'
read 'Ö'
read '×'
read 'Ø'
read 'Ù'
read 'Ú'
read 'Û'
read 'Ü'
read 'Ý'
read 'Þ'
read 'ß'
read 'à'
read 'á'
read 'â'
read 'ã'
read 'ä'
read 'å'
read 'æ'
read 'ç'
read 'è'
read 'é'
read 'ê'
read 'ë'
read 'ì'
read 'í'
read 'î'
read 'ï'
read 'ð'
read 'ñ'
read 'ò'
read 'ó'
read 'ô'
read 'õ'
read 'ö'
read '÷'
read 'ø'
read 'ù'
read 'ú'
read 'û'
read 'ü'
read 'ý'
read 'þ'
read 'ÿ'
$ all256|while read -n 1 c; do  echo read "'$c'"; done|cat -vt
read ''
read '^A'
read '^B'
read '^C'
read '^D'
read '^E'
read '^F'
read '^G'
read '^H'
read ''
read ''
read '^K'
read '^L'
read '^M'
read '^N'
read '^O'
read '^P'
read '^Q'
read '^R'
read '^S'
read '^T'
read '^U'
read '^V'
read '^W'
read '^X'
read '^Y'
read '^Z'
read '^['
read '^\'
read '^]'
read '^^'
read '^_'
read ''
read '!'
read '"'
read '#'
read '$'
read '%'
read '&'
read '''
read '('
read ')'
read '*'
read '+'
read ','
read '-'
read '.'
read '/'
read '0'
read '1'
read '2'
read '3'
read '4'
read '5'
read '6'
read '7'
read '8'
read '9'
read ':'
read ';'
read '<'
read '='
read '>'
read '?'
read '@'
read 'A'
read 'B'
read 'C'
read 'D'
read 'E'
read 'F'
read 'G'
read 'H'
read 'I'
read 'J'
read 'K'
read 'L'
read 'M'
read 'N'
read 'O'
read 'P'
read 'Q'
read 'R'
read 'S'
read 'T'
read 'U'
read 'V'
read 'W'
read 'X'
read 'Y'
read 'Z'
read '['
read ']'
read '^'
read '_'
read '`'
read 'a'
read 'b'
read 'c'
read 'd'
read 'e'
read 'f'
read 'g'
read 'h'
read 'i'
read 'j'
read 'k'
read 'l'
read 'm'
read 'n'
read 'o'
read 'p'
read 'q'
read 'r'
read 's'
read 't'
read 'u'
read 'v'
read 'w'
read 'x'
read 'y'
read 'z'
read '{'
read '|'
read '}'
read '~'
read '^?'
read 'M-^@'
read 'M-^A'
read 'M-^B'
read 'M-^C'
read 'M-^D'
read 'M-^E'
read 'M-^F'
read 'M-^G'
read 'M-^H'
read 'M-^I'
read 'M-
'
read 'M-^K'
read 'M-^L'
read 'M-^M'
read 'M-^N'
read 'M-^O'
read 'M-^P'
read 'M-^Q'
read 'M-^R'
read 'M-^S'
read 'M-^T'
read 'M-^U'
read 'M-^V'
read 'M-^W'
read 'M-^X'
read 'M-^Y'
read 'M-^Z'
read 'M-^['
read 'M-^\'
read 'M-^]'
read 'M-^^'
read 'M-^_'
read 'M- '
read 'M-!'
read 'M-"'
read 'M-#'
read 'M-$'
read 'M-%'
read 'M-&'
read 'M-''
read 'M-('
read 'M-)'
read 'M-*'
read 'M-+'
read 'M-,'
read 'M--'
read 'M-.'
read 'M-/'
read 'M-0'
read 'M-1'
read 'M-2'
read 'M-3'
read 'M-4'
read 'M-5'
read 'M-6'
read 'M-7'
read 'M-8'
read 'M-9'
read 'M-:'
read 'M-;'
read 'M-<'
read 'M-='
read 'M->'
read 'M-?'
read 'M-@'
read 'M-A'
read 'M-B'
read 'M-C'
read 'M-D'
read 'M-E'
read 'M-F'
read 'M-G'
read 'M-H'
read 'M-I'
read 'M-J'
read 'M-K'
read 'M-L'
read 'M-M'
read 'M-N'
read 'M-O'
read 'M-P'
read 'M-Q'
read 'M-R'
read 'M-S'
read 'M-T'
read 'M-U'
read 'M-V'
read 'M-W'
read 'M-X'
read 'M-Y'
read 'M-Z'
read 'M-['
read 'M-\'
read 'M-]'
read 'M-^'
read 'M-_'
read 'M-`'
read 'M-a'
read 'M-b'
read 'M-c'
read 'M-d'
read 'M-e'
read 'M-f'
read 'M-g'
read 'M-h'
read 'M-i'
read 'M-j'
read 'M-k'
read 'M-l'
read 'M-m'
read 'M-n'
read 'M-o'
read 'M-p'
read 'M-q'
read 'M-r'
read 'M-s'
read 'M-t'
read 'M-u'
read 'M-v'
read 'M-w'
read 'M-x'
read 'M-y'
read 'M-z'
read 'M-{'
read 'M-|'
read 'M-}'
read 'M-~'
read 'M-^?'
$ all256|while read -en 1 c; do  echo read "'$c'"; done|cat -vt
read ''
read '^A'
read '^B'
read '^C'
read '^D'
read '^E'
read '^F'
read '^G'
read '^H'
read ''
read ''
read '^K'
read '^L'
read '^M'
read '^N'
read '^O'
read '^P'
read '^Q'
read '^R'
read '^S'
read '^T'
read '^U'
read '^V'
read '^W'
read '^X'
read '^Y'
read '^Z'
read '^['
read '^\'
read '^]'
read '^^'
read '^_'
read ''
read '!'
read '"'
read '#'
read '$'
read '%'
read '&'
read '''
read '('
read ')'
read '*'
read '+'
read ','
read '-'
read '.'
read '/'
read '0'
read '1'
read '2'
read '3'
read '4'
read '5'
read '6'
read '7'
read '8'
read '9'
read ':'
read ';'
read '<'
read '='
read '>'
read '?'
read '@'
read 'A'
read 'B'
read 'C'
read 'D'
read 'E'
read 'F'
read 'G'
read 'H'
read 'I'
read 'J'
read 'K'
read 'L'
read 'M'
read 'N'
read 'O'
read 'P'
read 'Q'
read 'R'
read 'S'
read 'T'
read 'U'
read 'V'
read 'W'
read 'X'
read 'Y'
read 'Z'
read '['
read ']'
read '^'
read '_'
read '`'
read 'a'
read 'b'
read 'c'
read 'd'
read 'e'
read 'f'
read 'g'
read 'h'
read 'i'
read 'j'
read 'k'
read 'l'
read 'm'
read 'n'
read 'o'
read 'p'
read 'q'
read 'r'
read 's'
read 't'
read 'u'
read 'v'
read 'w'
read 'x'
read 'y'
read 'z'
read '{'
read '|'
read '}'
read '~'
read '^?'
read 'M-^@'
read 'M-^A'
read 'M-^B'
read 'M-^C'
read 'M-^D'
read 'M-^E'
read 'M-^F'
read 'M-^G'
read 'M-^H'
read 'M-^I'
read 'M-
'
read 'M-^K'
read 'M-^L'
read 'M-^M'
read 'M-^N'
read 'M-^O'
read 'M-^P'
read 'M-^Q'
read 'M-^R'
read 'M-^S'
read 'M-^T'
read 'M-^U'
read 'M-^V'
read 'M-^W'
read 'M-^X'
read 'M-^Y'
read 'M-^Z'
read 'M-^['
read 'M-^\'
read 'M-^]'
read 'M-^^'
read 'M-^_'
read 'M- '
read 'M-!'
read 'M-"'
read 'M-#'
read 'M-$'
read 'M-%'
read 'M-&'
read 'M-''
read 'M-('
read 'M-)'
read 'M-*'
read 'M-+'
read 'M-,'
read 'M--'
read 'M-.'
read 'M-/'
read 'M-0'
read 'M-1'
read 'M-2'
read 'M-3'
read 'M-4'
read 'M-5'
read 'M-6'
read 'M-7'
read 'M-8'
read 'M-9'
read 'M-:'
read 'M-;'
read 'M-<'
read 'M-='
read 'M->'
read 'M-?'
read 'M-@'
read 'M-A'
read 'M-B'
read 'M-C'
read 'M-D'
read 'M-E'
read 'M-F'
read 'M-G'
read 'M-H'
read 'M-I'
read 'M-J'
read 'M-K'
read 'M-L'
read 'M-M'
read 'M-N'
read 'M-O'
read 'M-P'
read 'M-Q'
read 'M-R'
read 'M-S'
read 'M-T'
read 'M-U'
read 'M-V'
read 'M-W'
read 'M-X'
read 'M-Y'
read 'M-Z'
read 'M-['
read 'M-\'
read 'M-]'
read 'M-^'
read 'M-_'
read 'M-`'
read 'M-a'
read 'M-b'
read 'M-c'
read 'M-d'
read 'M-e'
read 'M-f'
read 'M-g'
read 'M-h'
read 'M-i'
read 'M-j'
read 'M-k'
read 'M-l'
read 'M-m'
read 'M-n'
read 'M-o'
read 'M-p'
read 'M-q'
read 'M-r'
read 'M-s'
read 'M-t'
read 'M-u'
read 'M-v'
read 'M-w'
read 'M-x'
read 'M-y'
read 'M-z'
read 'M-{'
read 'M-|'
read 'M-}'
read 'M-~'
read 'M-^?'
$

Looks like $IFS characters and null become the empty string ''. The -e does not seem to change things. EOF is still handled the same.
 

4 More Discussions You Might Find Interesting

1. Programming

How to cancel a thread safely from the initial thread?

how about asynchronous canceling? or with signal? if with signal whether it effects the process? my english so badly :( :( (1 Reply)
Discussion started by: alan.zhao
1 Replies

2. Shell Programming and Scripting

Convert binary file to csv and then back to the binary format

Hello *nix specialists, Im working for a non profit organisation in Germany to transport DSL over WLAN to people in areas without no DSL. We are using Linksys WRT 54 router with DD-WRT firmware There are at the moment over 180 router running but we have to change some settings next time. So my... (7 Replies)
Discussion started by: digidax
7 Replies

3. Shell Programming and Scripting

Another Building Block, Binary File Manipulation...

Apologies for any typos, and IF this has been done before... This is yet another building block. The code generates a 256 byte binary file of _characters_ 0x00 to 0xFF for general usage and generates another binary file manipulated in a basic way. I need this facility for a kids project I am... (0 Replies)
Discussion started by: wisecracker
0 Replies

4. Forum Support Area for Unregistered Users & Account Problems

Not able to post thread/reply to thread

Dear Moderator I am not able to post any new thread or post reply to mine old thread. Kindly help as i am stuck on one problem and needed suggestion. Regards Jaydeep (1 Reply)
Discussion started by: jaydeep_sadaria
1 Replies
All times are GMT -4. The time now is 06:38 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy