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Full Discussion: bitwise and between two 32 bit binaries
Homework and Emergencies Emergency UNIX and Linux Support bitwise and between two 32 bit binaries Post 302577167 by otheus on Monday 28th of November 2011 10:14:00 AM
Old 11-28-2011
Alright, so I was curious how to do this in bash, having never myself attempted it. It's a bit tricky.

First, you can do the operation directly using "Arithmetic Expansion", ie $(( ... ))
Code:
$ echo $(( 2#1110101010101011 & 2#1111111111111110 ))
60074

The "2#" tells bash to interpret the following string as a binary (base-2) number.
Without those, you get:
Code:
1108859625484546

ie, gibberish.

For variables, it's the same:
Code:
$ x=2#1110101010101011; y=2#1111111111111110
$ echo $((x&y))
60074

You can also tell bash to interpolate x and y as strings and then into binary numbers like this:
Code:
$ x=1110101010101011; y=1111111111111110
$ echo $(( 2#$x & 2#$y ))
60074

See how bash first substitutes $x as a string, then interprets the resulting token into a binary number?
This User Gave Thanks to otheus For This Post:
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LEARN ABOUT DEBIAN

colorgccrc

COLORGCCRC(5)							File Formats Manual						     COLORGCCRC(5)

NAME

       colorgccrc - configuration file for colorgcc

DESCRIPTION

       A colorgccrc configuration file is used to configure the highlighting of the compiler output from colorgcc.

SYNTAX

       Each  line  consists  of  a  keyword  designating  a configuration variable.  The keyword is followed by `:' and then one or several values
       (depending on the keyword).  Lines beginning with a hash mark `#' are comments.

CONFIGURATION VARIABLES

       g++ | gcc | c++ | cc | g77 | gcj | gnat | gpc
	      Specifies the paths to the compilers.  Takes one value; a path to the compiler.

       nocolor
	      Specifies what terminal types colorization should be disabled on.  Takes one or several values, separated by whitespace.

       srcColor
	      Specifies the highlighting attributes source-code should be given.  Takes one or several color attributes.  See  the  section  COLOR
	      ATTRIBUTES for more information.

       introColor
	      Specifies  the  highlighting  attributes	for normal compiler output.  Takes one or several color attributes.  See the section COLOR
	      ATTRIBUTES for more information.

       warningFileNameColor | errorFileNameColor
	      Specifies the highlighting attributes for the filename in a  warning  or	an  error,  respectively.   Takes  one	or  several  color
	      attributes.  See the section COLOR ATTRIBUTES for more information.

       warningNumberColor | errorNumberColor
	      Specifies  the  highlighting  attributes	for  the  line-number  in a warning or an error, respectively.	Takes one or several color
	      attributes.  See the section COLOR ATTRIBUTES for more information.

       warningMessageColor | errorMessageColor
	      Specifies the highlighting attributes for the message-text in a warning or an error,  respectively.   Takes  one	or  several  color
	      attributes.  See the section COLOR ATTRIBUTES for more information.

COLOR ATTRIBUTES

       The following attributes are valid for highlighting.

       clear, reset

       bold, underline, underscore, blink, reverse, concealed

       black, red, green, yellow, blue, magenta, cyan, white

       on_black, on_red, on_green, on_yellow, on_blue, on_magenta, on_cyan, on_white

SEE ALSO

       gcc(1), colorgcc(1)

HISTORY

       Jan 15 2003: Initial version of this manual-page.

REPORTING BUGS

       Report bugs to <jmoyers@geeks.com>

AUTHORS

       Jamie Moyers <jmoyers@geeks.com> is the author of colorgcc.

       This  manual  page  was	written  by Joe Wreschnig <piman@sacredchao.net>, and modified by David Weinehall <tao@debian.org>, for the Debian
       GNU/Linux system (but may be used by others).

COPYRIGHT

       Copyright (C) 2003 Jamie Moyers
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

								   Jan 15, 2003 						     COLORGCCRC(5)
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