[cmd_du] Added function to check total projected disk usage of selected IMAGEIDs

src/cmd_du

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# doc cmd_du {
+#
+# DESCRIPTION
+#   cmd_du - Prints disk usage information like TOTAL USAGE of IMAGEID files on TARGET.
+#
+# USAGE
+#   cmd_du </path/to/git/dir> </path/to/target/dir>
+#
+# }
+
+cmd_du() {
+    local GIT_DIR="${1}"
+    local TARGET="${2}"
+    local DB_FILE="${TARGET}/${_OPT_DB_FILE}"
+    
+    local imageidList=($(awk 'BEGIN{FS="\t"}{if($1=="true"){print $2}}' ${DB_FILE} | awk '!seen[$0]++'))
+    local DU="$(print_imageid_du ${GIT_DIR} ${imageidList[@]})"
+    _msg ECHO "Current estimated disk usage: ${DU} bytes"
+}

src/parser

@@ -23,6 +23,11 @@ case "${1}" in
     update)
         shift
         cmd_update ${@}
-        ;;
+    ;;
+
+    du)
+        shift
+        cmd_du "${@}"
+    ;;
 esac