Added precaution so that we only get digits when we cat a pid file.
Added precaution so that we only get digits when we cat a pid file.

CompilerWorks/spliceengine,CompilerWorks/spliceengine,CompilerWorks/spliceengine,splicemachine/spliceengine,CompilerWorks/spliceengine,CompilerWorks/spliceengine,splicemachine/spliceengine,splicemachine/spliceengine,splicemachine/spliceengine,splicemachine/spliceengine,splicemachine/spliceengine,splicemachine/spliceengine,CompilerWorks/spliceengine