Touch test in Linux, for identifying Read only file systems and poor performance mount points

#!/bin/bash

# Usage: touch-test

# Touches and deletes a file on each of the locally mounted file systems. 

# This can help point out read-only mounts and poorly performing mounts.

# Run as root

[ "$EUID" -eq 0 ] || {

  echo 'Please run with sudo or as root.'

  exit 1

}

TEST_FILE='touch-test-file'

START=$(date)

START_SECONDS=$(date +%s)

for MOUNT in $(df -lP | egrep -v '^Filesystem|tmpfs' | awk '{print $NF}')

do

  TEST_FILE_ON_MOUNT="${MOUNT}/${TEST_FILE}"

  echo "$(date) - Touching $TEST_FILE_ON_MOUNT"

  touch $TEST_FILE_ON_MOUNT

  rm $TEST_FILE_ON_MOUNT

  echo "$(date) - Removed $TEST_FILE_ON_MOUNT"

done

END=$(date)

END_SECONDS=$(date +%s)

TOTAL_SECONDS=$(($END_SECONDS - $START_SECONDS))

echo

echo "Start: $START"

echo "End:   $END"

echo "Total: $TOTAL_SECONDS seconds"