我得到了一个motd头语法错误，我需要帮助启用motd

Question

我试图在我的ubuntu服务器/etc/update-motd.d/00-header /etc/update-motd.d/01-sysinfo /etc/update-motd.d/02-footer上修复motd脚本，因为我不断地得到这个奇怪的语法错误，原因很奇怪，上面写着"line 31: syntax error: unexpected end of file“，但是它指向一个没有代码的空空间，这简直是让人费解。

另一个问题是，每当我输入systemctl状态motd时，我就会在屏幕上看到它。

Unit motd.service could not be found.

我对被屏蔽的过程有问题，所以我在这个链接systemctl，如何解除掩码中使用了解决方案。

我已经和这个问题斗争了一段时间了，但是我在解决这个问题上正在取得进展，所以我们很感谢你的帮助。

该文件的内容在此文本下面。

#!/bin/sh
#
#    00-header - create the header of the MOTD Copyright (c) 2013 Nick Charlton Copyright (c)
#    2009-2010 Canonical Ltd.
#
#    Authors: Nick Charlton 
#             Dustin Kirkland 
#
#    This program is free software; you can redistribute it and/or modify it under the terms
#    of the GNU General Public License as published by the Free Software Foundation; either
#    version 2 of the License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
#    without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#    See the GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License along with this
#    program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
#    Floor, Boston, MA 02110-1301 USA.

[ -r /etc/lsb-release ] && . /etc/lsb-release

if [ -z "$DISTRIB_DESCRIPTION" ] && [ -x /usr/bin/lsb_release ]; then
        # Fall back to using the very slow lsb_release utility
        DISTRIB_DESCRIPTION=$(lsb_release -s -d) fi

figlet $(Ourserver) printf "\n"
printf "Welcome to %s (%s).n" "$DISTRIB_DESCRIPTION" "$(uname -r)" printf "\n"

Answer 1

"line 31: syntax error: unexpected end of file“之所以出现，是因为您有一个奇数的”配对“字符。所谓“配对”字符，我指的是必须以堆叠字符出现的字符，可能是中间的东西。例如，"、'、(、[、{等等。数一下你的引号：

files="/etc/update-motd.d/00-header /etc/update-motd.d/01-sysinfo /etc/update-motd.d/02-footer"
grep --color=always -E "\"|'|\(|\[|\{|\}|\]|\)" $files

Answer 2

该错误似乎起源于第25行：

25          DISTRIB_DESCRIPTION=$(lsb_release -s -d) fi

在fi之前需要有一个分隔符-- ;或换行符(我建议后者保留适当的缩进)。所以

23  if [ -z "$DISTRIB_DESCRIPTION" ] && [ -x /usr/bin/lsb_release ]; then
24          # Fall back to using the very slow lsb_release utility
25          DISTRIB_DESCRIPTION=$(lsb_release -s -d)
26  fi