You appear to have overwritten your system's /usr/bin/perl with a locally-compiled version with a different module path, and now it can't find any of the required system modules. This is not a bug in man-db nor in any of the other programs broken by this. You need to reinstall the system's version of Perl (perhaps "sudo apt-get --reinstall install perl-base perl-modules perl" will help get you started, although there may be other problems), and in future make sure to put locally-built versions of Perl somewhere else.
** Changed in: man-db (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1296215 Title: package man-db 2.6.5-2 failed to install/upgrade: 子进程 已安装 post- installation 脚本 返回了错误号 2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/man-db/+bug/1296215/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs