nextcloud_update_appimage.sh

#!/bin/bash

APPIMAGE_DIR="${HOME}/AppImage"
mkdir -p ${APPIMAGE_DIR}

BASE="https://download.nextcloud.com/desktop/releases/Linux"

LATEST=$(curl --silent "${BASE}/?C=M;O=D" | \
	grep 'Next[Cc]loud.*[.]AppImage[.]asc' | \
	head -1 | \
	sed -e 's/.*asc">//' -e 's/[.]asc<.*//'
)

DESTFILE="${APPIMAGE_DIR}/${LATEST}"

test -f "${DESTFILE}" && exit

echo updating to $LATEST
echo curl -o "${TMP}" "${BASE}/${LATEST}"

TMP=$(mktemp -p "${APPIMAGE_DIR}")
curl -o "${TMP}" "${BASE}/${LATEST}"
if [ $? -eq 0 ] ; then
	mv "${TMP}" "${DESTFILE}"
	chmod +x "${DESTFILE}"
else
	rm "${TMP}"
fi