Rotate wallpapers of a given directory

rotatepics.sh

#!/bin/sh

# Gist: https://gist.github.com/bitsmanent/204b24de2f0d36ac03f45783391a2786

DELAY=180
DEFAULT_PATH="$HOME/.wallpapers"
NEWLINE="
"
ARGV0="$(basename "$0")"

[ -n "$1" ] && path="$1" || path="."

die() {
	echo $@
	exit 1
}

getrpic() {
	path="$1"
	[ ! -d "$path" ] && exit 1
	IFS="$NEWLINE"
	shuf -n 1 -e "$path"/*
}

path="$1"
[ -z "$path" ] && path="$DEFAULT_PATH"

while true; do
	pic="$(getrpic "$path")"
	[ -z "$pic" ] && die "$ARGV0: $path: wrong or empty path"

	tag="$(mimetype -b "$pic" 2>/dev/null |cut -d'/' -f1)"
	[ "$tag" != "image" ] && die "$ARGV0: $pic: invalid image"

	feh --bg-max --no-fehbg "$pic"

	sleep "$DELAY"
done

Use this snippet to migrate from pexels.sh:

#!/bin/sh

# include resource file
. ~/.pexelsrc

for index in $(seq 1 48); do
	nitems=$NITEMS

	# get item url
	qs="per_page=1&page=$index"
	uri="https://api.pexels.com/v1/collections/$CID?$qs"
	json="$(curl -sH "Authorization: $APIKEY " "$uri")"
	pic="$(echo "$json" |sed -n 's/.*"original":"\([^"]*\).*/\1/p')"

	fn="$(basename "$pic")"
	echo curl -s --output "$HOME/.wallpapers/$fn" "$pic"
	curl -s --output "$HOME/.wallpapers/$fn" "$pic"
done

This should download all images from the collection.