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Top Forums UNIX for Beginners Questions & Answers Sum even numbers from 1 to 100 Post 303031397 by Nastybutler on Wednesday 27th of February 2019 05:44:56 PM
Old 02-27-2019
I have erased and restarted so many times out of frustration what I have I know is nowhere close to what I'm looking for.

Code:
i=1
sum=0

for n in {1..100}
do
        out$=(( $n % 2))
        while [ $out -eq 0]
        do
        sum=$((sum + $n))
        i=$((i + 1))
done


So the idea is I'm taking the numbers from this list: {0..100}

and I only want the ones that are even:
Code:
(( $n % 2))

Take those even numbers and print out them all out, adding them together like:
"2+4+6+8.....+98+100"


Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!

Last edited by RudiC; 02-28-2019 at 10:23 AM.. Reason: Added CODE tags.
 

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colortest-python(1)						   User Commands					       colortest-python(1)

NAME
colortest-python - Display color test chart and convert between color values SYNOPSIS
colortest-python DESCRIPTION
Displays 256, 88 and 16 color tables depending on what the terminal supports. Also provides for conversion between 256 and 88 color values. The program automatically detects 8, 16, 88, 256 color capabilities (via ncurses) and displays the appropriate color charts. Program can display the colors as blocks or 2d cubes optionally with color values overlaid in int or hex values, it can show the full rgb text string and show the display with a vertical (default) or horizontal orientation. In addition to the color charts it can also convert between 256 and 88 color values. This can be useful when converting various terminals like between urxvt and xterm-256. The goal of this program was to provide the functionality of all the various Perl and sh scripts in one place with some bells and whistles. OPTIONS
-b, --block Display as block format (vs cube) [default]. -c, --cube-slice Display as cube slices (vs block). -e NUMBER, --88to256=NUMBER Convert (expand) 88 color value NUMBER to an 256 color value. -h, --help Display sort help. -n, --numbers Include color escape numbers on chart. -l, --rgb Long format. RGB values as text. -p, --padding Add extra padding (helps discern colors). -r NUMBER, --256to88=NUMBER Convert (reduce) 256 color value NUMBER to an 88 color value. -v, --vertical Display with vertical orientation [default]. --version Show program's version number and exit -x, --hex Include hex color numbers on chart. -z, --horizontal Display with horizontal orientation. ENVIRONMENT
None. FILES
None. SEE ALSO
colortest-8(1) colortest-16(1) colortest-16b(1) colortest-16b(1) AUTHORS
Program was written by Thomas John Eikenberry <jae@zhar.net> This manual page was written by Jari Aalto <jari.aalto@cante.net>. Released under license GNU GPL version 3 or (at your option) any later version. For more information about license, visit <http://www.gnu.org/copyleft/gpl.html>. colortest-python 2012-06-18 colortest-python(1)
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