In This video I demonstrate the difference between local and global variables in bash, remember bash unlike most other languages has all its variables set to global by default. You can use the "local" flag to make the variable be accessible only by the function call.

Source Code used in this video ###local variables stay within the function, and cannot be accessed outside of it, to the rest of the script outside of that functions it's as if the variable doesn't even exist.

##by default all the variables in bash are global variables function greet_user(){ local name=$1 echo "Hello $name how are you doing?" }

###when the local flag is set the variable becomes "locked" to that function #function greet_user(){

local name=$1

echo "Hello $name how are you doing?"

#}

name="George" greet_user Kenny echo "Hello $name how are you doing?" #echo "after calling our function" #echo "Hello $name How are you doing today?" #echo "Hello $othername" #greet_user

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