diff --git a/mongodb/status.sh b/mongodb/status.sh
index 764d1b0..ccc9747 100755
--- a/mongodb/status.sh
+++ b/mongodb/status.sh
@@ -1,7 +1,29 @@
 #!/bin/bash
 set -eu
 
-currentDir="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
+# Get format option
+format=""
+while getopts ":f:" opt; do
+  case ${opt} in
+  f)
+    format="$OPTARG"
+    ;;
+  \?)
+    echo "Invalid option: -$OPTARG" 1>&2
+    exit 1
+    ;;
+  :)
+    echo "Option -$OPTARG requires an argument." 1>&2
+    exit 1
+    ;;
+  esac
+done
+shift $((OPTIND - 1))
+
+currentDir="$(
+  cd "$(dirname "$0")" >/dev/null 2>&1
+  pwd -P
+)"
 cd $currentDir
 . functions.sh
 
@@ -17,4 +39,20 @@ dir=$currentDir/versions/$optVersion
 
 exitIfNotExistDir $dir/datadir/$optName
 exitIfNotRunningPort $optPort
-$dir/basedir/bin/mongo --port $optPort --eval "db.serverStatus()"
+
+status=$($dir/basedir/bin/mongo --port $optPort --quiet --eval "db.serverStatus().ok")
+
+normalOutputs=""
+normalOutputs="${normalOutputs}$status"
+
+jsonOutputs=""
+jsonOutputs="$jsonOutputs{
+  \"status\": \"$status\"
+}"
+
+# Output
+if [ "$format" = "json" ]; then
+  echo -e "${jsonOutputs}"
+else
+  echo -e "${normalOutputs}"
+fi
diff --git a/mysql/status.sh b/mysql/status.sh
index 13b195d..0286609 100755
--- a/mysql/status.sh
+++ b/mysql/status.sh
@@ -1,7 +1,29 @@
 #!/bin/bash
 set -eu
 
-currentDir="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
+# Get format option
+format=""
+while getopts ":f:" opt; do
+  case ${opt} in
+  f)
+    format="$OPTARG"
+    ;;
+  \?)
+    echo "Invalid option: -$OPTARG" 1>&2
+    exit 1
+    ;;
+  :)
+    echo "Option -$OPTARG requires an argument." 1>&2
+    exit 1
+    ;;
+  esac
+done
+shift $((OPTIND - 1))
+
+currentDir="$(
+  cd "$(dirname "$0")" >/dev/null 2>&1
+  pwd -P
+)"
 cd $currentDir
 . functions.sh
 
@@ -18,4 +40,19 @@ dir=$currentDir/versions/$optVersion
 
 exitIfNotExistDir $dir/datadir/$optName
 exitIfNotRunningPort $optPort
-$dir/basedir/bin/mysqladmin --user=root --host=localhost --port=$optPort --socket=$optSocket status
+status=$($dir/basedir/bin/mysqladmin --user=root --host=localhost --port=$optPort --socket=$optSocket status)
+
+normalOutputs=""
+normalOutputs="${normalOutputs}$status"
+
+jsonOutputs=""
+jsonOutputs="$jsonOutputs{
+  \"status\": \"$status\"
+}"
+
+# Output
+if [ "$format" = "json" ]; then
+  echo -e "${jsonOutputs}"
+else
+  echo -e "${normalOutputs}"
+fi
diff --git a/postgresql/status.sh b/postgresql/status.sh
index b805c0e..7bf3d49 100755
--- a/postgresql/status.sh
+++ b/postgresql/status.sh
@@ -1,7 +1,29 @@
 #!/bin/bash
 set -eu
 
-currentDir="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
+# Get format option
+format=""
+while getopts ":f:" opt; do
+  case ${opt} in
+  f)
+    format="$OPTARG"
+    ;;
+  \?)
+    echo "Invalid option: -$OPTARG" 1>&2
+    exit 1
+    ;;
+  :)
+    echo "Option -$OPTARG requires an argument." 1>&2
+    exit 1
+    ;;
+  esac
+done
+shift $((OPTIND - 1))
+
+currentDir="$(
+  cd "$(dirname "$0")" >/dev/null 2>&1
+  pwd -P
+)"
 cd $currentDir
 . functions.sh
 
@@ -17,8 +39,24 @@ dir=$currentDir/versions/$optVersion
 
 exitIfNotExistDir $dir/datadir/$optName
 exitIfNotRunningPort $optPort
-$dir/basedir/bin/pg_ctl \
+status=$($dir/basedir/bin/pg_ctl \
  --pgdata $dir/datadir/$optName \
  --log $dir/datadir/$optName/postgres.log \
  -o "-p $optPort" \
- status
+ --silent \
+ status|grep "server is")
+
+normalOutputs=""
+normalOutputs="${normalOutputs}$status"
+
+jsonOutputs=""
+jsonOutputs="$jsonOutputs{
+  \"status\": \"$status\"
+}"
+
+# Output
+if [ "$format" = "json" ]; then
+  echo -e "${jsonOutputs}"
+else
+  echo -e "${normalOutputs}"
+fi
diff --git a/redis/status.sh b/redis/status.sh
index 19d3dda..803e312 100755
--- a/redis/status.sh
+++ b/redis/status.sh
@@ -1,7 +1,29 @@
 #!/bin/bash
 set -eu
 
-currentDir="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
+# Get format option
+format=""
+while getopts ":f:" opt; do
+  case ${opt} in
+  f)
+    format="$OPTARG"
+    ;;
+  \?)
+    echo "Invalid option: -$OPTARG" 1>&2
+    exit 1
+    ;;
+  :)
+    echo "Option -$OPTARG requires an argument." 1>&2
+    exit 1
+    ;;
+  esac
+done
+shift $((OPTIND - 1))
+
+currentDir="$(
+  cd "$(dirname "$0")" >/dev/null 2>&1
+  pwd -P
+)"
 cd $currentDir
 . functions.sh
 
@@ -18,4 +40,19 @@ dir=$currentDir/versions/$optVersion
 exitIfNotExistDir $dir/datadir/$optName
 exitIfNotRunningPort $optPort
 
-$dir/basedir/src/redis-cli -p $optPort ping
+status=$($dir/basedir/src/redis-cli -p $optPort ping)
+
+normalOutputs=""
+normalOutputs="${normalOutputs}$status"
+
+jsonOutputs=""
+jsonOutputs="$jsonOutputs{
+  \"status\": \"$status\"
+}"
+
+# Output
+if [ "$format" = "json" ]; then
+  echo -e "${jsonOutputs}"
+else
+  echo -e "${normalOutputs}"
+fi