执行apt-get install 报错：Errors were encountered while processing

    dpkg: warning: files list file for package 'libquadmath0:amd64' missing; assuming package has no files currently installed  
    (Reading database ... 79 files and directories currently installed.)  
    Preparing to unpack .../dovecot-imapd_1%3a2.1.7-7+deb7u1_amd64.deb ...  
    Unpacking dovecot-imapd (1:2.1.7-7+deb7u1) ...  
    Selecting previously unselected package dovecot-lmtpd.  
    Preparing to unpack .../dovecot-lmtpd_1%3a2.1.7-7+deb7u1_amd64.deb ...  
    Unpacking dovecot-lmtpd (1:2.1.7-7+deb7u1) ...  
    Selecting previously unselected package dovecot-pop3d.  
    Preparing to unpack .../dovecot-pop3d_1%3a2.1.7-7+deb7u1_amd64.deb ...  
    Unpacking dovecot-pop3d (1:2.1.7-7+deb7u1) ...  
    Setting up dovecot-imapd (1:2.1.7-7+deb7u1) ...  
    dpkg: error processing package dovecot-imapd (--configure):  
     subprocess installed post-installation script returned error exit status 10  
    Setting up dovecot-lmtpd (1:2.1.7-7+deb7u1) ...  
    dpkg: error processing package dovecot-lmtpd (--configure):  
     subprocess installed post-installation script returned error exit status 10  
    Setting up dovecot-pop3d (1:2.1.7-7+deb7u1) ...  
    dpkg: error processing package dovecot-pop3d (--configure):  
     subprocess installed post-installation script returned error exit status 10  
    Errors were encountered while processing:  
     dovecot-imapd  
     dovecot-lmtpd  
     <span style="color:#ff6666;">dovecot-pop3d  
    E: Sub-process /usr/bin/dpkg returned an error code (1)</span>  

解决方式：

清空/var/lib/dpkg/info目录下面的内容