title: ubuntu apt-get install all fiald?some errors with rsyslog
body: <pre><code>The user `syslog' is already a member of `adm'.
  Skipping profile in /etc/apparmor.d/disable: usr.sbin.rsyslogd
  /usr/sbin/invoke-rc.d: 1: /usr/sbin/invoke-rc.d: /sbin/runlevel: not found
  start: Job failed to start
  invoke-rc.d: initscript rsyslog, action "restart" failed.
  dpkg: error processing package rsyslog (--configure):
   subprocess installed post-installation script returned error exit status 1
  Setting up ppp (2.4.5-5.1ubuntu2.2) ...
  update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
  insserv: Service gdm has to be enabled to start service pppd-dns
  insserv: exiting now!
  update-rc.d: error: insserv rejected the script header
  dpkg: error processing package ppp (--configure):
   subprocess installed post-installation script returned error exit status 1
  Setting up liblua5.2-0:amd64 (5.2.3-1) ...
  Setting up librpmio3 (4.11.1-3ubuntu0.1) ...
  Setting up debugedit (4.11.1-3ubuntu0.1) ...
  Setting up librpm3 (4.11.1-3ubuntu0.1) ...
  Setting up librpmbuild3 (4.11.1-3ubuntu0.1) ...
  Setting up librpmsign1 (4.11.1-3ubuntu0.1) ...
  Setting up rpm-common (4.11.1-3ubuntu0.1) ...
  Setting up rpm2cpio (4.11.1-3ubuntu0.1) ...
  Setting up rpm (4.11.1-3ubuntu0.1) ...
  Processing triggers for libc-bin (2.21-0ubuntu4) ...
  Errors were encountered while processing:
   rsyslog
   ppp
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  </code></pre>
  
  <p>this the error meesage.
  At first, I just want to reinstall mysql.
  when I <code>service mysql restart</code>,
  ubuntu give me a <code>unkonw instance</code> error.
  so, I reinstall it, then, I can't install it again. seems like apt-get install was not worked.</p>