你看看手指按键那里有没有磨损?

@moxiaonai 可能在你看来二手的有各种不好。我不知道你说的好与不好具体指的是什么？除了父母，我自己用的也是二手的，新的买不起，而且不光手机，我大概有 50%的电子产品都是二手的，二手的不代表都是伊拉克战斗成色。使用安卓机一般会遇到用一段时间会出现卡顿的情况 ；或者父母在点击某些链接后会被安装一些 app，你确定屏幕弹出来的那些提示他们都能看懂并合理的点“确定”和“取消”吗? 再有就是除此之外的一些其他想不到的问题。我不知道你是否有经常被叫去帮忙整理手机的经历，我不是烦这件事，只是这件事需要一个彻底的解决方案，如果有的话你有可能知道我在说什么。当然了，用 ios 也有它的问题，但至少不用担心由于他们的误操作被安装其他 app 这个麻烦，也没再出现过卡顿的情况，这两点对于我来说很满意。我爸以前用了 3 年的 note4，换 6sp 已经 3 周了，就第一周教了一礼拜，现在也算顺利的过渡过来了，日常的打电话，发短信，微信聊天 /充话费电费 /买东西 /拍照 /录像 /截屏 /发朋友圈，看视频，看新闻，查询 4G 流量，设置 wifi 上网密码，添加删除编辑联系人 /各种提醒铃声的设置 /整理自己的照片，闹钟提醒之类的也都会用了。最后，每个人对问题侧重点的取舍不同，自愿买新买旧，我只是提供个参考，你仍然可以继续不理解，也不是所有人都喜欢 iphone。

1800 可以收一个二手，成色很满意的 6sp 了

@msg7086 你这挺不错
@Vhc 我也农村的，父母给选也挺好，省的自己挑了。

我也在为类似的问题发愁。
不过唯一不同的是，我假装我买了。

@lcatt 可以搞两个路虎嘛

@1a0ma0 都会有的:)
@zhaohao 纪念日快乐啊:)

我用了一百多，都买狗粮了。

@des 这是干嘛的

我耳朵听不出好坏，只是纯粹为了降噪买的 QC35II，效果非常满意。

google 拼音，我现在用的就是。

@mingl0280 多谢了:)
@lostberryzz 很受用的搜索方法:)

@ooeyunarika 是的，现在基本明白 source 是干嘛的了。

@heimeil 我是不是被 https://blog.csdn.net/swiftfake/article/details/79098345 里面的 source 用法误导了

解决了，之前一直是下面这样的提示，然后我就去搜为啥安装包时不会解决自动依赖了。有人说是源的问题，于是就开始折腾源，多谢楼上的 @loncc 提供了清华的源，我更改后没起作用，提示依旧，此时意识到可能不是源的问题，只好又把 source.list 换成了系统默认的。

z0z@z0z:/etc$ sudo apt-get install subversion
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
subversion : Depends: libsvn1 (= 1.9.3-2ubuntu1.1) but it is not going to be installed
Depends: libapr1 (>= 1.5.0) but it is not going to be installed
Depends: libaprutil1 (>= 1.3.2+dfsg) but it is not going to be installed
teamviewer : Depends: libqt5x11extras5 (>= 5.2) but it is not going to be installed
Depends: qtdeclarative5-controls-plugin (>= 5.2) but it is not going to be installed or
qml-module-qtquick-controls (>= 5.2) but it is not going to be installed
Depends: qtdeclarative5-dialogs-plugin (>= 5.2) but it is not going to be installed or
qml-module-qtquick-dialogs (>= 5.2) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
z0z@z0z/etc$ sudo apt-get -f install subversion

于是搜 The following packages have unmet dependencies，找到了
https://blog.csdn.net/jinguangliu/article/details/78145423
捡关键的说，就是 sudo apt --fix-broken install 这句起了作用

z0z@z0z:/etc$ sudo apt --fix-broken install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
linux-headers-4.13.0-36 linux-headers-4.13.0-36-generic linux-image-4.13.0-36-generic linux-image-extra-4.13.0-36-generic linux-signed-image-4.13.0-36-generic
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
libqt5x11extras5 qml-module-qtquick-controls qml-module-qtquick-dialogs qml-module-qtquick-privatewidgets qtdeclarative5-controls-plugin qtdeclarative5-dialogs-plugin
The following NEW packages will be installed:
libqt5x11extras5 qml-module-qtquick-controls qml-module-qtquick-dialogs qml-module-qtquick-privatewidgets qtdeclarative5-controls-plugin qtdeclarative5-dialogs-plugin
0 upgraded, 6 newly installed, 0 to remove and 392 not upgraded.
1 not fully installed or removed.
Need to get 787 kB of archives.
After this operation, 3,511 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://cn.archive.ubuntu.com/ubuntu xenial/universe amd64 libqt5x11extras5 amd64 5.5.1-3build1 [7,876 B]
Get:2 http://cn.archive.ubuntu.com/ubuntu xenial/main amd64 qml-module-qtquick-controls amd64 5.5.1-1ubuntu1 [643 kB]
Get:3 http://cn.archive.ubuntu.com/ubuntu xenial/universe amd64 qtdeclarative5-controls-plugin all 5.5.1-1ubuntu1 [4,032 B]
Get:4 http://cn.archive.ubuntu.com/ubuntu xenial/main amd64 qml-module-qtquick-privatewidgets amd64 5.5.1-1ubuntu1 [38.9 kB]
Get:5 http://cn.archive.ubuntu.com/ubuntu xenial/main amd64 qml-module-qtquick-dialogs amd64 5.5.1-1ubuntu1 [89.0 kB]
Get:6 http://cn.archive.ubuntu.com/ubuntu xenial/universe amd64 qtdeclarative5-dialogs-plugin amd64 5.5.1-1ubuntu1 [4,044 B]
Fetched 787 kB in 2s (350 kB/s)
Selecting previously unselected package libqt5x11extras5:amd64.
(Reading database ... 290837 files and directories currently installed.)
Preparing to unpack .../libqt5x11extras5_5.5.1-3build1_amd64.deb ...
Unpacking libqt5x11extras5:amd64 (5.5.1-3build1) ...
Selecting previously unselected package qml-module-qtquick-controls:amd64.
Preparing to unpack .../qml-module-qtquick-controls_5.5.1-1ubuntu1_amd64.deb ...
Unpacking qml-module-qtquick-controls:amd64 (5.5.1-1ubuntu1) ...
Selecting previously unselected package qtdeclarative5-controls-plugin.
Preparing to unpack .../qtdeclarative5-controls-plugin_5.5.1-1ubuntu1_all.deb ...
Unpacking qtdeclarative5-controls-plugin (5.5.1-1ubuntu1) ...
Selecting previously unselected package qml-module-qtquick-privatewidgets:amd64.
Preparing to unpack .../qml-module-qtquick-privatewidgets_5.5.1-1ubuntu1_amd64.deb ...
Unpacking qml-module-qtquick-privatewidgets:amd64 (5.5.1-1ubuntu1) ...
Selecting previously unselected package qml-module-qtquick-dialogs:amd64.
Preparing to unpack .../qml-module-qtquick-dialogs_5.5.1-1ubuntu1_amd64.deb ...
Unpacking qml-module-qtquick-dialogs:amd64 (5.5.1-1ubuntu1) ...
Selecting previously unselected package qtdeclarative5-dialogs-plugin:amd64.
Preparing to unpack .../qtdeclarative5-dialogs-plugin_5.5.1-1ubuntu1_amd64.deb ...
Unpacking qtdeclarative5-dialogs-plugin:amd64 (5.5.1-1ubuntu1) ...
Processing triggers for libc-bin (2.23-0ubuntu10) ...
Setting up libqt5x11extras5:amd64 (5.5.1-3build1) ...
Setting up qml-module-qtquick-controls:amd64 (5.5.1-1ubuntu1) ...
Setting up qtdeclarative5-controls-plugin (5.5.1-1ubuntu1) ...
Setting up qml-module-qtquick-privatewidgets:amd64 (5.5.1-1ubuntu1) ...
Setting up qml-module-qtquick-dialogs:amd64 (5.5.1-1ubuntu1) ...
Setting up qtdeclarative5-dialogs-plugin:amd64 (5.5.1-1ubuntu1) ...
Setting up teamviewer (13.2.26559) ...
Processing triggers for libc-bin (2.23-0ubuntu10) ...


此时正在欢快地执行 sudo apt-get upgrade....

现在是这个鸟样：

z0z@z0z:~/work/vimicro/trunk/build/scripts$ source /etc/apt/sources.list
No command 'deb' found, did you mean:
Command 'derb' from package 'icu-devtools' (main)
Command 'dab' from package 'bsdgames' (universe)
Command 'dex' from package 'dex' (universe)
Command 'debi' from package 'devscripts' (main)
Command 'debc' from package 'devscripts' (main)
Command 'xdeb' from package 'xdeb' (universe)
Command 'deb3' from package 'quilt' (universe)
Command 'dub' from package 'dub' (universe)
deb: command not found
No command 'deb' found, did you mean:
Command 'debc' from package 'devscripts' (main)
Command 'derb' from package 'icu-devtools' (main)
Command 'debi' from package 'devscripts' (main)
Command 'dex' from package 'dex' (universe)
Command 'dab' from package 'bsdgames' (universe)
Command 'dub' from package 'dub' (universe)
Command 'xdeb' from package 'xdeb' (universe)
Command 'deb3' from package 'quilt' (universe)
deb: command not found
No command 'deb' found, did you mean:
Command 'dex' from package 'dex' (universe)
Command 'dub' from package 'dub' (universe)
Command 'dab' from package 'bsdgames' (universe)
Command 'debi' from package 'devscripts' (main)
Command 'debc' from package 'devscripts' (main)
Command 'deb3' from package 'quilt' (universe)
Command 'xdeb' from package 'xdeb' (universe)
Command 'derb' from package 'icu-devtools' (main)
deb: command not found
No command 'deb' found, did you mean:
Command 'dex' from package 'dex' (universe)
Command 'dab' from package 'bsdgames' (universe)
Command 'derb' from package 'icu-devtools' (main)
Command 'dub' from package 'dub' (universe)
Command 'debc' from package 'devscripts' (main)
Command 'deb3' from package 'quilt' (universe)
Command 'xdeb' from package 'xdeb' (universe)
Command 'debi' from package 'devscripts' (main)
deb: command not found
No command 'deb' found, did you mean:
Command 'dub' from package 'dub' (universe)
Command 'dex' from package 'dex' (universe)
Command 'deb3' from package 'quilt' (universe)
Command 'xdeb' from package 'xdeb' (universe)
Command 'derb' from package 'icu-devtools' (main)
Command 'debi' from package 'devscripts' (main)
Command 'dab' from package 'bsdgames' (universe)
Command 'debc' from package 'devscripts' (main)
deb: command not found
No command 'deb' found, did you mean:
Command 'debc' from package 'devscripts' (main)
Command 'dub' from package 'dub' (universe)
Command 'xdeb' from package 'xdeb' (universe)
Command 'dab' from package 'bsdgames' (universe)
Command 'debi' from package 'devscripts' (main)
Command 'dex' from package 'dex' (universe)
Command 'deb3' from package 'quilt' (universe)
Command 'derb' from package 'icu-devtools' (main)
deb: command not found
No command 'deb' found, did you mean:
Command 'dub' from package 'dub' (universe)
Command 'debi' from package 'devscripts' (main)
Command 'deb3' from package 'quilt' (universe)
Command 'xdeb' from package 'xdeb' (universe)
Command 'dex' from package 'dex' (universe)
Command 'debc' from package 'devscripts' (main)
Command 'derb' from package 'icu-devtools' (main)
Command 'dab' from package 'bsdgames' (universe)
deb: command not found
No command 'deb' found, did you mean:
Command 'dab' from package 'bsdgames' (universe)
Command 'dex' from package 'dex' (universe)
Command 'dub' from package 'dub' (universe)
Command 'xdeb' from package 'xdeb' (universe)
Command 'debi' from package 'devscripts' (main)
Command 'deb3' from package 'quilt' (universe)
Command 'debc' from package 'devscripts' (main)
Command 'derb' from package 'icu-devtools' (main)
deb: command not found
No command 'deb' found, did you mean:
Command 'dex' from package 'dex' (universe)
Command 'xdeb' from package 'xdeb' (universe)
Command 'deb3' from package 'quilt' (universe)
Command 'derb' from package 'icu-devtools' (main)
Command 'debi' from package 'devscripts' (main)
Command 'debc' from package 'devscripts' (main)
Command 'dab' from package 'bsdgames' (universe)
Command 'dub' from package 'dub' (universe)
deb: command not found
No command 'deb' found, did you mean:
Command 'deb3' from package 'quilt' (universe)
Command 'debi' from package 'devscripts' (main)
Command 'debc' from package 'devscripts' (main)
Command 'xdeb' from package 'xdeb' (universe)
Command 'dub' from package 'dub' (universe)
Command 'derb' from package 'icu-devtools' (main)
Command 'dab' from package 'bsdgames' (universe)
Command 'dex' from package 'dex' (universe)
deb: command not found

ubuntu16.04 LTS