egdoc

#!/bin/bash
# Bash has "dynamic" scoping:
# Variable lookups occur in the scope where a function is CALLED
animal="dog"

function get_animal() {
  echo "I have a ${animal}"
}

function mypet() {

egdoc

#!/bin/bash
# The -e or --errexit shell option causes the shell to exit immediately when
# a command returns a non-zero status (with some exceptions). An ERR trap gets
# executed before the shell exits
set -o errexit

trap 'echo trapped!' ERR

# This command will have a non-zero exit status, since a standard user has no 
# permission to enter the /root directory. Because of the error the trap will