Workaround missing mktemp and cmp commands

Author: pillarsdotnet

templates/update_had_no_effect.sh.epp

@@ -5,12 +5,13 @@
 | -%>
 
 DIR='var/cache/apt'
-EVAL="$(mktemp)"
+EVAL="$(mktemp)" || EVAL=/tmp/aptdir
 apt-config shell DIR Dir::Cache > "$EVAL" && . "$EVAL"
 cd "/$DIR" || exit 0
-OLD="$(mktemp -p "/$DIR")"
+export TMPDIR="/$DIR"
 CUR=pkgcache.bin
 apt-config shell CUR DIR::Cache::pkgcache >"$EVAL" && . "$EVAL"
+OLD="$(mktemp)" || OLD="/${DIR}/${CUR}.old"
 rm -f "$EVAL"
 ln -f "$CUR" "$OLD"
 TRIES=<%= $tries %>
@@ -24,7 +25,7 @@ while true; do
   sleep 1
   TRIES=$(( TRIES - 1 ))
 done
-cmp "$CUR" "$OLD"
-SAME=$?
+SAME=1
+cmp "$CUR" "$OLD" && SAME=0
 rm -f "$OLD"
 exit $SAME