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Homework and Emergencies Homework & Coursework Questions Sum of even numbers from 0 to 100 script Post 303031728 by Nastybutler on Tuesday 5th of March 2019 02:08:44 AM
Old 03-05-2019
We are using this in the bash shell. Sorry I'm very new with this so I don't have the syntax down 100%.

--- Post updated at 07:08 AM ---

After everyones feedback this is what I have so far. Please bare in mind again, I'm still learning and I know it's not perfect.

Code:
#!/bin/bash

counter=0
sum=0

while [[ $counter -le 100 ]]
do
        echo -n "$counter"
if ! [ $((counter % 2)) -eq 0 ]
then
        echo "$sum"
        sum=((sum + $counter))

fi
done

I am getting an error message that reads:

Code:
./count4.sh: line 14: syntax error near unexpected token `fi'
./count4.sh: line 14: `fi'

Moderator's Comments:
Mod Comment Please remember to use CODE tags when displaying sample input, sample output, and code segments.

Last edited by Don Cragun; 03-05-2019 at 03:43 AM..
 

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pfsinhdrgen(1)						      General Commands Manual						    pfsinhdrgen(1)

NAME
pfsinhdrgen - Create a pfs stream with different exposures defined by hdrgen script. SYNOPSIS
pfsinhdrgen <sample.hdrgen> DESCRIPTION
This program reads files defined in given hdrgen script and outputs them in a PFS stream. Each frame has a tag BV with corresponding brightness value (APEX standard). Larger BV corresponds to less exposure (darker image), necessary to capture a bright scene. The generated PFS stream is to be used with photo-metric calibration software and with generators of HDR images. HDRGEN script file is a plain text file in which each line contains: <path_to_an_image> <inverse_of_exposure_time_in_seconds> <aper- ture_size> <iso_speed> 0 In most cases it is convenient to use the jpeg2hdrgen program to create such a file automatically. In case it could not parse the exif information from jpeg files, it is necessary to create this file by hand. Below are the sample contents of such file: <--- cut here: sample.hdrgen /var/tmp/images/img08.jpg 4 2.8 100 0 /var/tmp/images/img09.jpg 58.8235 2.8 100 0 /var/tmp/images/img10.jpg 76.9231 2.8 100 0 /var/tmp/images/img11.jpg 322.581 2.8 100 0 /var/tmp/images/img12.jpg 400 2.8 100 0 <--- cut here: sample.hdrgen EXAMPLES
pfsinhdrgen sample.hdrgen | pfsview View exposures defined in sample.hdrgen script. SEE ALSO
jpeg2hdrgen(1) pfshdrcalibrate(1) BUGS
Please report bugs and comments on implementation to Grzegorz Krawczyk <gkrawczyk@users.sourceforge.net>. pfsinhdrgen(1)
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