Shell同时使用变量和转义美元字符

Question

如何在shell脚本中使用变量并使用 cat＆lt;＆lt;同时转义美元字符？ _ EOF _

重要的是我没有使用“或”字符。

这是我写的文字：

cat <<- _EOF_ >> "$serverconfigdir/$siteaddress"
    This is a sample text! Here is my variable below!
    $usethisvariable

    This is another sample text! $escapethisstring show it how it looks bla bla.
_EOF_

Answer 1

您需要在第二次出现时转义$：

cat <<- _EOF_ >> "$serverconfigdir/$siteaddress"
    This is a sample text! Here is my variable below!
    $usethisvariable

    This is another sample text! \$escapethisstring show it how it looks bla bla.
_EOF_