How do I use rage of dates to download image from Nasa in bash

Question

Need to download images using range of dates or specified date from Nasa. The date keeps defaulting to current date although I input different date.

TODAY= read -p "Enter date: "$(+%Y-%m-%d)

if [ ! -e ~/Pictures/${TODAY}_apod.jpg ]; then echo "We don't have the    picture saved, save it"

get_page


PICURL=`/bin/cat /tmp/pic_url`

echo  "Picture URL is: ${PICURL}"

echo  "Downloading image"
wget --quiet $PICURL -O $PICTURES_DIR/${TODAY}_apod.jpg

 echo "Setting image as wallpaper"
 gconftool-2 -t string -s /desktop/gnome/background/picture_filename                              $PICTURES_DIR/${TODAY}_apod.jpg

save_description
else get_page

PICURL=`/bin/cat /tmp/pic_url`

echo  "Picture URL is: ${PICURL}"

SITEFILESIZE=$(wget --spider $PICURL 2>&1 | grep Length | awk '{print $2}')
FILEFILESIZE=$(stat -c %s $PICTURES_DIR/${TODAY}_apod.jpg)

if [ $SITEFILESIZE != $FILEFILESIZE ]; then
echo "The picture has been updated, getting updated copy"
rm $PICTURES_DIR/${TODAY}_apod.jpg


PICURL=`/bin/cat /tmp/pic_url`

echo  "Downloading image"
wget --quiet $PICURL -O $PICTURES_DIR/${TODAY}_apod.jpg

echo "Setting image as wallpaper"
$PICTURES_DIR/${TODAY}_apod.jpg

save_description

else echo "Picture is the same, finishing up" fi It should download image from the date provided.

Answer 1

I would strongly suggest to make use of the apod API. The following query returns all the information of the APOD of a given day:

$ curl 'https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY&date=2019-11-01'

This you can process with jq to extract the information you want.

A very detailed explanation can be found here