A few more naming things (minor)

bin/spark-class

@@ -156,7 +156,7 @@ export CLASSPATH
 
 # In Spark submit client mode, the driver is launched in the same JVM as Spark submit itself.
 # Here we must parse the properties file for relevant "spark.driver.*" configs before launching
-# the driver JVM itself. Instead of handling this complexity in BASH, we launch a separate JVM
+# the driver JVM itself. Instead of handling this complexity in Bash, we launch a separate JVM
 # to prepare the launch environment of this driver JVM.
 
 if [ -n "$SPARK_SUBMIT_BOOTSTRAP_DRIVER" ]; then

core/src/main/scala/org/apache/spark/deploy/SparkSubmitDriverBootstrapper.scala

@@ -27,7 +27,7 @@ import org.apache.spark.util.{RedirectThread, Utils}
  * Launch an application through Spark submit in client mode with the appropriate classpath,
  * library paths, java options and memory. These properties of the JVM must be set before the
  * driver JVM is launched. The sole purpose of this class is to avoid handling the complexity
- * of parsing the properties file for such relevant configs in BASH.
+ * of parsing the properties file for such relevant configs in Bash.
  *
  * Usage: org.apache.spark.deploy.SparkSubmitDriverBootstrapper <application args>
  */
@@ -69,7 +69,7 @@ private[spark] object SparkSubmitDriverBootstrapper {
 
     // Favor Spark submit arguments over the equivalent configs in the properties file.
     // Note that we do not actually use the Spark submit values for library path, classpath,
-    // and java opts here, because we have already captured them in BASH.
+    // and Java opts here, because we have already captured them in Bash.
     val newDriverMemory = submitDriverMemory.getOrElse(confDriverMemory)
     val newLibraryPath =
       if (submitLibraryPath.isDefined) {