How to do it...

Let's begin our activity as follows:

1. Open a new terminal and start an editor of your choice and create a new script. The following is a code snippet from the script:

#!/bin/bash
FILE_TO_TEST=""

function permissions() {
  
  echo -e "\nWhat are our permissions on this $2?\n"
  if [ -r $1 ]; then 
    echo -e "[R] Read" 
  fi
  if [ -w $1 ]; then 
    echo -e     "[W] Write" 
  fi
  if [ -x $1 ]; then 
    echo -e "[X] Exec" 
  fi
}

function file_attributes() {

  if [ ! -s $1 ]; then
    echo "\"$1\" is empty" 
  else 
    FSIZE=$(stat --printf="%s" $1 2> /dev/null)
    RES=$?
    if [ $RES -eq 1 ]; then
      return
    else
      echo "\"$1\" file size is: ${FSIZE}\""
    fi
  fi
  
  if [ ! -O $1 ]; then
    echo -e "${USER} is not the owner of \"$1\"\n"
  fi
  if [ ! -G $1 ]; then
    echo -e "${USER} is not among the owning group(s) for \"$1\"\n"
  fi
  
  permissions $1 "file"
  
}

2. Execute the script and try to access the various files, including the directories and files that do not exist. What do you notice?
3. Remove the folder now with this command:

$ sudo rm -rf fileops