Learn Linux Basics | part 5: Shell Scripting functions

Learn Linux Basics | part 5: Shell Scripting functions

Funtions: 

Writing Functions:

Normal function:
get_name() {
  echo "John"
}
echo "You are $(get_name)"


Function that accepts parameters and process it:
argunets and their meaning
$#	Number of arguments
$*	All arguments
$@	All arguments, starting from first
$1	First argument

myfunc() {
    echo "hello $1"
}
# Same as above (alternate syntax)
function myfunc() {
    echo "hello $1"
}
myfunc "Sandip"


Function returning values:
myfunc() {
    local myresult='some value'
    echo $myresult
}
result="$(myfunc)"

Raising errors:
myfunc() {
  return 1
}
if myfunc; then
  echo "success"
else
  echo "failure"
fi


What next?
Next I will cover loops in shell scripting