用 sudo 執行幾個命令

 placeholderCopysudo -s <<EOF
  a='var'
  echo 'Running serveral commands with sudo'
  mktemp -d
  echo "\$a"
EOF

• 需要轉義 $a 以防止它被當前 shell 擴充套件

要麼

 placeholderCopysudo -s <<'EOF'
  a='var'
  echo 'Running serveral commands with sudo'
  mktemp -d
  echo "$a"
EOF