[shell] Tomcat 버전 체크

function maxVersion {
  FILE_FIND=$1
  START_STR=$2
  END_STR=$3

  FILES=$(ls $FILE_FIND)

  MAX_VERSION=-1
  for FILE in $FILES ; do
    FILE="$(basename -- $FILE)"
    VERSION=`echo $FILE | grep -o -P "(?<=$START_STR).*(?=$END_STR)"`
    if [ -n "$VERSION" ] ; then
      IFS='.' read -ra arr <<< "$VERSION"
      VERSION=${arr[2]}
      if [ $VERSION -gt $MAX_VERSION ]; then
        MAX_VERSION=$VERSION
      fi
    fi
  done
  echo $MAX_VERSION

}


CATALINA_HOME=/data/tomcat/apache-tomcat-9.0.7
PATCH_VERSION=$(maxVersion "/data/tomcat/apache-tomcat-*.zip" "tomcat-" ".zip")
echo "PATCH_VERSION: $PATCH_VERSION"

NOW_VERSION=`echo "$CATALINA_HOME" | grep -o -P '(?<=tomcat-).*(?=$)'`
IFS='.' read -ra arr <<< "$NOW_VERSION"
PATCHED_VERSION=${arr[2]}
echo "PATCHED_VERSION: $PATCHED_VERSION"

if [ $PATCH_VERSION -gt $PATCHED_VERSION ]; then
  echo "패치 파일 있음. 현재: $NOW_VERSION, 패치 버전: $PATCH_VERSION"
fi