1 files changed, 34 insertions, 0 deletions
diff --git a/src/lib/xilib.sh b/src/lib/xilib.sh
new file mode 100644
index 0000000..57dd10c
--- /dev/null
+++ b/src/lib/xilib.sh
@@ -0,0 +1,34 @@
+#!/bin/sh
+
+# format a number into a bytes, kibibytes, mebibytes, or gibibytes
+#
+format_bytes () {
+    case "1" in 
+        "$(($1>=1<<30))") printf "$(($1>>30))GiB";;
+        "$(($1>=1<<20))") printf "$(($1>>20))MiB";;
+        "$(($1>=1<<10))") printf "$(($1>>10))kiB";;
+        *) printf "$1B";;
+    esac
+}
+
+# ensure that the user is a root user
+#
+checkroot () {
+    [ "$(id -u)" = "0" ] || {
+        printf "${RED}Please run as root!${RESET}\n"
+        exit 1
+    }
+}
+
+# reverse the order of lines
+#
+reverse_lines () {
+    local result=
+    while IFS= read -r line; do 
+        result="$line
+        $result"
+    done
+    echo "$result" 
+}
+
+