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Top Forums Shell Programming and Scripting Unix random number generate in given range Post 302541232 by kshji on Saturday 23rd of July 2011 05:46:32 AM
Old 07-23-2011
You can use also builtin calculation, tested using ksh and bash
Code:
echo $(( 10+RANDOM%21 ))
# or more generic
min=10
max=30
((diff=max-min+1))
echo $(( min + RANDOM%diff ))

This User Gave Thanks to kshji For This Post:
 

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dbar(1) 							   User Commands							   dbar(1)

NAME
dbar - ASCII progresbar SYNOPSIS
echo <percentage> | dbar [options] <indicator text> DESCRIPTION
dbar lets you define static 0% and 100% marks or you can define these marks dynamically at runtime. Static and dynamic marks can be mixed, in this case the value specified at runtime will have a higher priority. You can specify ranges of numbers, negative, positive or ranges with a negative min value and positive max value. All numbers are treated as double precision floating point, i.e. the input is NOT limited to integers. OPTIONS
-l Label to be prepended to the bar (default: "" ). -nonl no new line, don't put ' ' at the end of the bar (default: do print " ") -max Value to be considered 100% (default: 100). -min Value to be considered 0% (default: 0). -s Symbol represeting the percentage value in the meter (default: "="). -w Number of charcaters to be considered 100% in the meter (default: 25) EXAMPLES
Static 100% mark or single value input: echo 25 | dbar -max 100 -l text Output: text 25% [====== ] If your 100% mark changes dynamically or 2-values input: echo "50 150" | dbar | | | |__ max value | |__ value to display Output: 33% [======== ] If your value range is not between [0, maxval] or 3-values input: echo "50 -25 150" | dbar | | | | | |__ max value 100% mark | | | |_____ min value 0% mark | |________ value to display Output: 43% [=========== ] Multiple runs: for i in 2 20 50 75 80; do echo $i; sleep 1; done | dbar | dzen2 Output: Find out yourself. ENVIRONMENT
None. FILES
None. SEE ALSO
dzen2(1) AUTHORS
Program was written by Robert Manea <rob.manea@gmail.com>. This manual page was written by Jari Aalto <jari.aalto@cante.net> for the Debian GNU system (but may be used by others). Released under license GNU GPL version 2 or (at your option) any later version. For more information about license, visit <http://www.gnu.org/copyleft/gpl.html>. dbar 2012-04-02 dbar(1)
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