實體機為Windows 8.1 64位元，虛擬機Xubuntu 16.04 如何安裝啟用 Php-cUrl 套件將電郵寄出

使用環境：
實體機為Windows 8.1 64位元，虛擬軟體為 VMware Workstation 14 虛擬機為Xubuntu 16.04

1.更新
$sudo apt-get update

出現錯誤訊息

  錯誤訊息(1)
  Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/cache/app-info -a -e /usr/bin/appstreamcli; then appstreamcli refresh > /dev/null; fi'
  解決方案：
   $sudo pkill -KILL appstreamcli
   $wget -P /tmp https://launchpad.net/ubuntu/+archive/primary/+files/appstream_0.9.4-1ubuntu1_amd64.deb https://launchpad.net/ubuntu/+archive/primary/+files/libappstream3_0.9.4-1ubuntu1_amd64.deb
   $sudo dpkg -i /tmp/appstream_0.9.4-1ubuntu1_amd64.deb /tmp/libappstream3_0.9.4-1ubuntu1_amd64.deb
   錯誤訊息(2)
   E: 無法將 /var/lib/dpkg/lock 鎖定 - open (11: 資源暫時無法取得)
   E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
   解決方案：
   $sudo rm -rf /var/lib/dpkg/lock
   $sudo apt-get install -f

2.安裝php-cUrl 套件
$sudo apt-get install php-curl

  3.啟用php-cUrl 套件

     $sudo pico /etc/php/7.2/apache2/php.ini
     將;移除(這部份的原因是應對實體機的Windows 8.1的環境)
 

  4.重啟apache2
  $sudo service apache2 restart

參考資源：
1.16.04 安裝 php5-oldstable失敗
https://www.ubuntu-tw.org/modules/newbb/viewtopic.php?topic_id=107696&forum=9&post_id=360034
2.Ubuntu 16.04出現：Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/cache/app-info -a -e /usr/bin/appstreamcli; then appstreamcli refresh > /dev/null; fi'
https://hk.saowen.com/a/d3491aa04525f876d79d278abf9ebd0e83c27b169d4fefda65e81385cd13a6e2
3.請教 synaptic 錯誤訊息
https://www.ubuntu-tw.org/modules/newbb/viewtopic.php?viewmode=compact&topic_id=38180&forum=22