mountpoint checker

files/is-mount

@@ -0,0 +1,45 @@
+#!/bin/bash
+set -e
+function _help() {
+  echo '
+Usage: is-mount path
+
+  Checks if path is the mountpoint root folder
+
+  example:  is-mount -v /mnt/mountpoint
+
+  -v for verbose output
+
+  if path is a mountpoint: exit 0
+  If path is not a mountpoint: exit 10
+  if path is missing: exit 1
+  '
+  exit
+}
+verbose=0
+for (( i=1; i<=$#; i++ ))
+do  if [[ "${!i}" = "-h" ]]; then _help; fi
+    if [[ "${!i}" = "-v" ]]; then verbose=1; continue; fi
+    if [[ -z "$path1" ]]; then path1="${!i}"; continue; fi
+done
+if [[ -z "$path1" ]]; then _help; fi
+
+if [[ ! -e "$path1" ]]; then
+  echo "No such path '$path1'"
+  exit 1
+fi
+
+path1=$( realpath "$path1" )
+
+mountpoint1=$( stat -c "%m" "$path1" )
+
+if [[ "$path1" = "$mountpoint1" ]]; then
+  if [[ $verbose -eq 1 ]]; then
+    echo "$path1 is a mount point"
+  fi
+  exit 0
+fi
+if [[ $verbose -eq 1 ]]; then
+    echo "$path1 is not a mount point (it is $mountpoint1)"
+  fi
+exit 10