./capture_screenshots.sh EACH_SECONDS [FULL_PATH]

Will capture screenshots every EACH_SECONDS in FULL_PATH, default path is $HOME/Pictures/screenshots

• Bash/KSH (probably works with others too)
• scrot to capture screenshots, but you can configure other command

• CAPTURE_SCREENSHOTS_COMMAND defaults to scrot: Set command to capture screenshots
• CAPTURE_SCREENSHOTS_FILENAME defaults to %s.png (supported by scrot!): Set screenshot filename

It's a good idea to copy it in a place in your $PATH, like /usr/local/bin.

• Don't use SECONDS variable, as is not POSIX