Upgrade: Bug fix for installation on Mac
Bug: When there is no /usr/local/madlib, installation fails due to the
non-existence of the folder when running preflight script
Fix: Detect whether the folder exists first in both preflight and
postflight scripts
diff --git a/deploy/postflight.sh b/deploy/postflight.sh
index 2c76503..0da30ae 100755
--- a/deploy/postflight.sh
+++ b/deploy/postflight.sh
@@ -15,5 +15,8 @@
ln -nsf /usr/local/madlib/Current/bin /usr/local/madlib/bin
ln -nsf /usr/local/madlib/Current/doc /usr/local/madlib/doc
-mv -f /usr/local/madlib/Versions.bak/* /usr/local/madlib/Versions/
-rm -rf /usr/local/madlib/Versions.bak
+if [ -d "/usr/local/madlib/Versions.bak" ]
+then
+ mv -f /usr/local/madlib/Versions.bak/* /usr/local/madlib/Versions/
+ rm -rf /usr/local/madlib/Versions.bak
+fi
diff --git a/deploy/preflight.sh b/deploy/preflight.sh
index 67bd1c8..d867e11 100755
--- a/deploy/preflight.sh
+++ b/deploy/preflight.sh
@@ -2,4 +2,7 @@
# $0 - Script Path, $1 - Package Path, $2 - Target Location, and $3 - Target Volumn
-mv /usr/local/madlib/Versions /usr/local/madlib/Versions.bak
+if [ -d "/usr/local/madlib/Versions" ]
+then
+ mv /usr/local/madlib/Versions /usr/local/madlib/Versions.bak
+fi
