#!/bin/bash

# explore null checking
read -p "enter a name: " name
if [ "$name" = "" ] # [ ! "$name" ] or { -z "$name" ]
then
        echo The name variable is null
else
        echo The name is filled with $name
fi
# check ID 
#!/bin/bash
# Sciprname: idcheck
# Purpose: check user id to see if user is root.
# Only root has an uid of 0.
# Format for id output: uid=9496(ellie) gid=40 groups=40
# root's uid=0
id=`id | sed -r 's/uid=([^ ]*)\(.*/\1/'` #get user id
echo your user id is: $id
if (( id == 0 ))
then
        echo "You are superuser."
else
        echo "You are not superuser."
fi