Using bash variable in text output

Question

I'm using convert to add text to some images via a bash script. My issue is that I can't figure out how to add the contents of the variable to the text string to be placed in the image.

My script is as follows:

#! /bin/bash
for i in {1..10}
do
    convert -font TlwgTypewriter-Bold -pointsize 18 -fill white -draw 'text 140,29 "ID: $i"' $i.png $i-reward.png
done

But when I run it I get the following:

bashimage

How might I get the variable to output its contents into this string?

anubhava · Accepted Answer · 2014-08-02 18:28:41Z

4

It seems it is due to wrong quoting of your command here:

-draw 'text 140,29 "ID: $i"'

Change that to:

-draw "text 140,29 \"ID: $i\""

It is because shell doesn't expand variables inside single quote.

answered Aug 2, 2014 at 18:28

anubhava

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