augeas &傀儡&空白

Question

我尝试用木偶编辑文件limits.com。我需要增加这些文件的行。我从：http://docs.puppetlabs.com/guides/augeas.html复制了这个示例

# /etc/puppet/modules/limits/manifests/conf.pp
define limits::conf (
  $domain = "root",
  $type = "soft",
  $item = "nofile",
  $value = "10000"
  ) {

    # guid of this entry
    $key = "$domain/$type/$item"

    # augtool> match /files/etc/security/limits.conf/domain[.="root"][./type="hard" and ./item="nofile" and ./value="10000"]

    $context = "/files/etc/security/limits.conf"

    $path_list  = "domain[.=\"$domain\"][./type=\"$type\" and ./item=\"$item\"]"
    $path_exact = "domain[.=\"$domain\"][./type=\"$type\" and ./item=\"$item\" and ./value=\"$value\"]"

    augeas { "limits_conf/$key":
       context => "$context",
       onlyif  => "match $path_exact size != 1",
       changes => [
         # remove all matching to the $domain, $type, $item, for any $value
         "rm $path_list",
         # insert new node at the end of tree
         "set domain[last()+1] $domain",
         # assign values to the new node
         "set domain[last()]/type $type",
         "set domain[last()]/item $item",
         "set domain[last()]/value $value",
       ],
     }

和用例：

limits::conf {

  # maximum number of open files/sockets for root
  "root-soft": domain => root, type => soft, item => nofile, value =>  9999;
  "root-hard": domain => root, type => hard, item => nofile, value =>  9999;

}

limits.conf内部的结果是：

#@student        -       maxlogins       4
root hard nofile 9999
root soft nofile 9999

如何将空格或制表符放在“根硬nofile & value”值“我尝试将空格放在其中”，尝试使用regex，但不起作用。谢谢

Answer 1

详细阐述了Raphink的正确答案:虽然augeas以语义的方式处理文件(它知道内容代表什么)，但如果您更关心外观，还有其他选择。

在您的示例中，通过模板管理文件并对结果进行细粒度控制可能更有意义。

Answer 2

您不能。Augeas自动管理空间，并且无法手动控制它们。