More tweaks.

[riscv-talks.git] / 2016-redhat / run

diff --git a/2016-redhat/run b/2016-redhat/run
index 4ad069a..fedfb70 100755 (executable)
--- a/2016-redhat/run
+++ b/2016-redhat/run
@@ -13,7 +13,9 @@ export GNOME_KEYRING_PID=
 #unset ftp_proxy
 
 # Uncompress from the pristine image.
-unxz -k stage3-disk.img.xz
+if [ ! -f stage3-disk.img ]; then
+    unxz -k stage3-disk.img.xz
+fi
 
 # Run techtalk.
 #techtalk-pse