gerrit.sh: Improve error message when JRE cannot be found

If a JRE cannot be found at the location specified by JAVA_HOME or
container.javaHome, the server startup fails and an error message is
displayed.

Update the error message so that the reader realizes that while the
JAVA_HOME and/or container.javaHome might be *set* the value in them
might not be *valid*. An example of when this might be the case is when
the java installation was upgraded and the location changed from:

  /Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home/jre

to:

  /Library/Java/JavaVirtualMachines/jdk1.8.0_192.jdk/Contents/Home/jre

and while the JAVA_HOME environment variable got update to the new
location, container.javaHome did not and still pointed to the old (and
now invalid) location.

Change-Id: I24e0dc19781920e8901ef8743c847606ebd640ce

1 files changed, 3 insertions, 3 deletions

diff --git a/gerrit-pgm/src/main/resources/com/google/gerrit/pgm/init/gerrit.sh b/gerrit-pgm/src/main/resources/com/google/gerrit/pgm/init/gerrit.sh
index 3de01d982b..a76d018655 100755
--- a/gerrit-pgm/src/main/resources/com/google/gerrit/pgm/init/gerrit.sh
+++ b/gerrit-pgm/src/main/resources/com/google/gerrit/pgm/init/gerrit.sh
@@ -259,9 +259,9 @@ if test -z "$JAVA" \
 fi
 
 if test -z "$JAVA" ; then
-  echo >&2 "Cannot find a JRE or JDK. Please set JAVA_HOME or"
-  echo >&2 "container.javaHome in $GERRIT_SITE/etc/gerrit.config"
-  echo >&2 "to a >=1.7 JRE"
+  echo >&2 "Cannot find a JRE or JDK. Please ensure that the JAVA_HOME environment"
+  echo >&2 "variable or container.javaHome in $GERRIT_SITE/etc/gerrit.config is"
+  echo >&2 "set to a valid >=1.7 JRE location"
   exit 1
 fi