A shell script that will run the passed in command every 25 (DELAY_TIME) seconds.

es.sh

#!/bin/bash

# check if parameter is passed
if [ -z "$1" ]; then
  echo "Usage: $0 <command>"
  exit 1
fi

# set the delay time (in seconds)
DELAY_TIME=25

# run the command every DELAY_TIME seconds and echo it
while true; do
  echo "Running: $1"
  $1
  sleep $DELAY_TIME
done