Variable scoping in bash

scoping.sh

#!/bin/bash

function hello() {
  local fname="$1"

  echo "Ciao, $fname"
}

echo "Ereditato dal terminale"
echo "\$USER: $USER"
echo

aname='pippo'
echo "Globale"
echo "\$name: $aname"
echo

echo "Globale (2)"
hello "$aname"
echo

echo "\$fname è locale"
echo "\$fname: $fname"
echo

# Shellcheck qui notifica gli errori:
# * SC2030
# * SC2031
# "var was modified in a subshell. That change might be lost."
# https://github.com/koalaman/shellcheck/wiki/SC2031
echo "Subshell"
( 
  avar='foo'
  echo "Nella subshell, \$avar: $avar"
)
echo "Fuori dalla subshell, \$avar: $avar"
echo

exit 0