Pasted

#!/bin/sh
Z_DATE=$(date "+%Y-%m-%d")
Z_FILENAME="backup-extroot_${Z_DATE}.tgz"
Z_MANIFEST="backup-extroot-installed-pkgs_${Z_DATE}.manifest"
 
rm -f /root/backup-extroot*${Z_DATE}*
 
touch /root/${Z_FILENAME}
tar -zcvC /overlay -X /overlay/upper/root/${Z_FILENAME} -f /root/${Z_FILENAME} .
 
# List opkg-list-installed-extroot but without versions
opkg-list-installed-extroot | cut -d' ' -f1 > ${Z_MANIFEST}