save changes script

tools/dir2sb

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 if [ "$2" = "" ]; then
-   echo "Usage: $0 [source directory] [target file.sb]"
+   echo "Usage: $0 [source_directory] [target_file.sb]"
    exit 1
 fi
 

tools/savechanges

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+TMP=/tmp/changes$$
+CHANGES=/mnt/live/memory/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|^etc/fstab|^etc/ld[.]so[.]cache|^boot/|^dev/|^mnt/|^proc/|^run/|^sys/|^tmp/"
+
+if [ "$1" = "" ]; then
+   echo "Usage: $0 [ target_file.sb ]"
+   exit 1
+fi
+
+# exclude the safe_file itself of course
+EXCLUDE="$EXCLUDE|^""$(readlink -f "$1" | cut -b 2- | sed -r "s/[.]/[.]/")""\$"
+
+CWD=$(pwd)
+
+cd $CHANGES || exit
+
+mkdir -p $TMP
+mount -t tmpfs tmpfs $TMP
+
+find \( -type d -printf "%p/\n" , -type f -print \) \
+  | sed -r "s/[.]\\///" | egrep -v "$EXCLUDE" \
+  | while read FILE; do
+echo $FILE
+    cp -v --parents -afr $FILE $TMP
+done
+
+cd $CWD
+
+mksquashfs $TMP "$1" -comp xz -b 512k -noappend
+
+umount $TMP
+rmdir $TMP