使用apt-get install 的时候报下面错误，莫名其妙的执行了一些命令并报错。
# apt-get install wget Reading package lists... Done Building dependency tree Reading state information... Done wget is already the newest version (1.17.1-1ubuntu1.5). 0 upgraded, 0 newly installed, 0 to remove and 237 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] y Setting up berta (16756od) ... + rm -rf /tmp/berta + mkdir -p /tmp/berta + '[' -f /etc/berta.ini ']' + rm -f /opt/berta/berta + ln -s . /opt/berta/berta ln: failed to create symbolic link '/opt/berta/berta': No such file or directory dpkg: error processing package berta (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: berta E: Sub-process /usr/bin/dpkg returned an error code (1)解决方法：
cd /var/lib/dpkg sudo mv info info.bak sudo apt-get update
通过全局搜索“rm -rf /tmp/berta”，发现果然是/var/lib/dpkg/info下存在莫名其妙的命令：
# grep -r "rm \-rf \/tmp\/berta" var/ var/lib/dpkg/info/berta.postinst:rm -rf /tmp/berta var/lib/dpkg/info/berta.postinst:#rm -rf /tmp/berta var/crash/berta.0.crash: + rm -rf /tmp/berta var/crash/berta.0.crash: + rm -rf /tmp/berta var/crash/berta.0.crash: + rm -rf /tmp/berta var/crash/berta.0.crash: + rm -rf /tmp/berta var/crash/berta.0.crash: + rm -rf /tmp/berta var/crash/berta.0.crash: + rm -rf /tmp/berta var/crash/berta.0.crash: + rm -rf /tmp/berta var/crash/berta.0.crash: + rm -rf /tmp/berta var/crash/berta.0.crash: + rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/apt/term.log:+ rm -rf /tmp/berta var/log/unattended-upgrades/unattended-upgrades-dpkg.log:+ rm -rf /tmp/berta var/log/unattended-upgrades/unattended-upgrades-dpkg.log:+ rm -rf /tmp/berta var/log/unattended-upgrades/unattended-upgrades-dpkg.log:+ rm -rf /tmp/berta var/log/unattended-upgrades/unattended-upgrades-dpkg.log:+ rm -rf /tmp/berta var/log/unattended-upgrades/unattended-upgrades-dpkg.log:+ rm -rf /tmp/berta var/log/unattended-upgrades/unattended-upgrades-dpkg.log:+ rm -rf /tmp/berta var/log/unattended-upgrades/unattended-upgrades-dpkg.log:+ rm -rf /tmp/berta var/log/unattended-upgrades/unattended-upgrades-dpkg.log:+ rm -rf /tmp/berta
