我在我的 Ubuntu 16.04 安装中安装了 GNOME 很短的时间。卸载它（使用sudo apt remove gnome-shell ubuntu-gnome-desktop）后，我仍然将“GNOME Shell 集成”扩展安装到 Google Chrome 中。不幸的是，我无法删除扩展，因为它是“管理”安装的：
我怎样才能摆脱这种肿瘤？
我一直在尝试安装mysql-server2 个小时。该系统在 Ubuntu Wily 上。
日志文件中没有添加任何内容。
root@Erman:~# dpkg --configure mysql-server-5.6
Setting up mysql-server-5.6 (5.6.28-0ubuntu0.15.10.1) ...
2016-02-13 18:15:50 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2016-02-13 18:15:50 0 [Note] /usr/sbin/mysqld (mysqld 5.6.28-0ubuntu0.15.10.1) starting as process 25352 ...
2016-02-13 18:15:50 25352 [Note] Plugin 'FEDERATED' is disabled.
2016-02-13 18:15:50 25352 [Note] InnoDB: Using atomics to ref count buffer pool pages
2016-02-13 18:15:50 25352 [Note] InnoDB: The InnoDB memory heap is disabled
2016-02-13 18:15:50 25352 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2016-02-13 18:15:50 25352 [Note] InnoDB: Memory barrier is not used
2016-02-13 18:15:50 25352 [Note] InnoDB: Compressed tables use zlib 1.2.8
2016-02-13 18:15:50 25352 [Note] InnoDB: Using Linux native AIO
2016-02-13 18:15:50 25352 [Note] InnoDB: Using CPU crc32 instructions
2016-02-13 18:15:50 25352 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2016-02-13 18:15:50 25352 [Note] InnoDB: Completed initialization of buffer pool
2016-02-13 18:15:50 25352 [Note] InnoDB: Highest supported file format is Barracuda.
2016-02-13 18:15:50 25352 [Note] InnoDB: 128 rollback segment(s) are active.
2016-02-13 18:15:50 25352 [Note] InnoDB: Waiting for purge to start
2016-02-13 18:15:50 25352 [Note] InnoDB: 5.6.28 started; log sequence number 1626183
2016-02-13 18:15:50 25352 [Note] Binlog end
2016-02-13 18:15:50 25352 [Note] InnoDB: FTS optimize thread exiting.
2016-02-13 18:15:50 25352 [Note] InnoDB: Starting shutdown...
2016-02-13 18:15:52 25352 [Note] InnoDB: Shutdown completed; log sequence number 1626193
insserv: warning: script 'K01vncserver' missing LSB tags and overrides
insserv: warning: script 'vncserver' missing LSB tags and overrides
start: Job failed to start
invoke-rc.d: initscript mysql, action "start" failed.
dpkg: error processing package mysql-server-5.6 (--configure):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
mysql-server-5.6
我今天在我的 Ubuntu 服务器上试用了 Bleachbit。但是，它似乎正在尝试擦除可用空间，这需要很多时间，而且我不需要它。
如何让 Bleachbit 不从命令行擦除可用空间？