fix TMPDIR location when saving

Author: macropin

commands/save

@@ -129,7 +129,7 @@ case "${compression:-gzip}" in
 
 # Create a temporary save path
 # mkdir uses TMPDIR, if unset set to /var/tmp since /tmp is normally in memory and could be too small for a big database
-TMPDIR="${TMPDIR:-/var/tmp}"
+export TMPDIR="${TMPDIR:-/var/tmp}"
 save_path="$(mktemp -d)/"
 
 # Setup the final path to pass to the save cmd