虚拟主机的操作系统升级后，perl的版本也升级到了5.26.x，awstats的统计中断了，从后台的错误信息：

查了一下，此类信息应该是从5.22开始的： As written by @Leobaillard you can use his patch. If you want to fix this with your editor (vi) you can go to line 3936 and make the following changes $ vi buildroot/output/host/usr/bin/automake goto line :3936 and change $text =~ s/${([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge; to $text =~ s/${([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge; The error is with automake and perl v5.26.

从perl v5.22开始：不再推荐在正则表达式中使用 {，而且如果没有转义 { 会有错误警告，从v5.26开始：不仅有警告，还会有语法错误提示。

解决方法：在所有正则表达式的 “{” “}” 前面增加转义符:

diff -r1.1008 awstats.pl 9045,9050c9045,9050 < $LogFormatString =~ s/"%{Referer}i"/%refererquot/g; < $LogFormatString =~ s/"%{User-Agent}i"/%uaquot/g; < $LogFormatString =~ s/%{mod_gzip_input_size}n/%gzipin/g; < $LogFormatString =~ s/%{mod_gzip_output_size}n/%gzipout/g; < $LogFormatString =~ s/%{mod_gzip_compression_ratio}n/%gzipratio/g; < $LogFormatString =~ s/(%{ratio}n)/%deflateratio/g;

  $LogFormatString =~ s/\"%\{Referer\}i\"/%refererquot/g;
  $LogFormatString =~ s/\"%\{User-Agent\}i\"/%uaquot/g;
  $LogFormatString =~ s/%\{mod_gzip_input_size\}n/%gzipin/g;
  $LogFormatString =~ s/%\{mod_gzip_output_size\}n/%gzipout/g;
  $LogFormatString =~ s/%\{mod_gzip_compression_ratio\}n/%gzipratio/g;
  $LogFormatString =~ s/\(%\{ratio\}n\)/%deflateratio/g;