rootcopy custom

Slax/briq/rootcopy/usr/bin/savechanges

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+TMP=/tmp/changes$$
+EXCLUDE="^\$|/\$|[.]wh[.][.]wh[.]orph/|^[.]wh[.][.]wh[.]plnk/|^[.]wh[.][.]wh[.]aufs|^var/cache/|^var/backups/|^var/tmp/|^var/log/|^var/lib/apt/|^var/lib/dhcp/|^var/lib/systemd/|^sbin/fsck[.]aufs|^etc/resolv[.]conf|^root/[.]Xauthority|^root/[.]xsession-errors|^root/[.]fehbg|^root/[.]fluxbox/lastwallpaper|^root/[.]fluxbox/menu_resolution|^etc/mtab|^etc/fstab|^boot/|^dev/|^mnt/|^proc/|^run/|^sys/|^tmp/"
+CHANGES=/run/initramfs/memory/changes
+
+if [ "$1" = "" ]; then
+   echo ""
+   echo "savechanges - save all changed files in a compressed filesystem bundle"
+   echo "            - excluding some predefined files such as /etc/mtab,"
+   echo "              temp & log files, empty directories, apt cache, and such"
+   echo ""
+   echo "Usage:"
+   echo "        $0 [ target_file.sb ] [ changes_directory ]"
+   echo ""
+   echo "If changes_directory is not specified, /run/initramfs/memory/changes is used."
+   echo ""
+   exit 1
+fi
+
+if [ ! "$2" = "" ]; then
+   CHANGES="$2"
+fi
+
+# exclude the save_file itself of course
+EXCLUDE="$EXCLUDE|^""$(readlink -f "$1" | cut -b 2- | sed -r "s/[.]/[.]/")""\$"
+
+CWD=$(pwd)
+
+cd $CHANGES || exit
+
+mkdir -p $TMP
+mount -t tmpfs tmpfs $TMP
+
+find \( -type d -printf "%p/\n" , -not -type d -print \) \
+  | sed -r "s/^[.]\\///" | egrep -v "$EXCLUDE" \
+  | while read FILE; do
+    cp --parents -afr "$FILE" "$TMP"
+done
+
+cd $CWD
+
+mksquashfs $TMP "$1" -comp xz -b 1024K -always-use-fragments -noappend
+
+umount $TMP
+rmdir $TMP