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我收到 motd 標頭語法錯誤，我需要幫助啟用 motd

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我收到 motd 標頭語法錯誤，我需要幫助啟用 motd

我正在嘗試修復我的 ubuntu 伺服器上的 motd 腳本，/etc/update-motd.d/00-header /etc/update-motd.d/01-sysinfo /etc/update-motd.d/02-footer 因為我不斷收到這個奇怪的語法錯誤，因為一些奇怪的原因，它說“ line 31: syntax error: unexpected end of file”，但它指向一個沒有程式碼的空白空間，這真是令人困惑。

另一個問題是，每當我輸入 systemctl status motd 時，我都會在螢幕上看到這個。

Unit motd.service could not be found.

我遇到了進程被屏蔽的問題，因此我使用了此連結中的解決方案systemctl，如何取消屏蔽。

我已經與這個問題作鬥爭有一段時間了，但我在解決它方面取得了進展，因此感謝幫助。

文件的內容位於此文字下方。

#!/bin/sh
#
#    00-header - create the header of the MOTD Copyright (c) 2013 Nick Charlton Copyright (c)
#    2009-2010 Canonical Ltd.
#
#    Authors: Nick Charlton <[email protected]>
#             Dustin Kirkland <[email protected]>
#
#    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"

答案1

出現“ line 31: syntax error: unexpected end of file”是因為您有奇數個“配對”字元。透過“配對”字符，我的意思是必須與匹配字符一起出現的字符，可能在其之間有東西。例如，"、'、(、[、{等。

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

答案2

這個錯誤似乎源自於第 25 行：

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

fi在- a或換行符之前需要有一個分隔符號;（我建議後者，因為它保留了正確的縮排）。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

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