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Full Discussion: Divide variable
Top Forums Shell Programming and Scripting Divide variable Post 302768149 by Scrutinizer on Friday 8th of February 2013 04:44:51 AM
Old 02-08-2013
Code:
E=$( echo $D | awk '{print $1/2^20}' )

Code:
E=$( echo $D | awk '{$1/=2^20}1' )

Alternative:
Code:
E=$( echo "$D/2^20" | bc -l )

ksh93:
Code:
E=$(( D/2**20.0 ))

Bash/ksh is you do not care about the precision:
Code:
E=$(( D/2**20 ))

Any POSIX shell if you do not care about the precision:
Code:
E=$(( D >> 20 ))

--
MiB, not GiB
The trailing semicolon in awk is superfluous indeed

Last edited by Scrutinizer; 02-08-2013 at 06:18 AM..
 

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APACHE_SETENV(3)							 1							  APACHE_SETENV(3)

apache_setenv - Set an Apache subprocess_env variable

SYNOPSIS
bool apache_setenv (string $variable, string $value, [bool $walk_to_top = false]) DESCRIPTION
apache_setenv(3) sets the value of the Apache environment variable specified by $variable. Note When setting an Apache environment variable, the corresponding $_SERVER variable is not changed. PARAMETERS
o $variable - The environment variable that's being set. o $value - The new $variable value. o $walk_to_top - Whether to set the top-level variable available to all Apache layers. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Setting an Apache environment variable using apache_setenv(3) <?php apache_setenv("EXAMPLE_VAR", "Example Value"); ?> NOTES
Note apache_setenv(3) can be paired up with apache_getenv(3) across separate pages or for setting variables to pass to Server Side Includes (.shtml) that have been included in PHP scripts. SEE ALSO
apache_getenv(3). PHP Documentation Group APACHE_SETENV(3)
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