我正在和我的朋友谈论在使用vim时删除多行。他们说他们使用d3d删除 3 行，而我使用3dd
我知道我的命令是：3（重复 3x）dd（删除整行）
我朋友的命令是["x]d{motion}的形式，即删除 {motion} 移过的文本 [进入寄存器 x]。
但是，我不认为3d是一个有效的动作。是吗？
我不明白为什么这个d3d命令在 vim 中有效
我正在检查 journalctl 的输出，看到大量以下条目：
gnome-shell [5944]：加载缩略图时出错：错误：参数宽度：值超出 gfloat 的范围
短时间内好像涨了几千
$ uptime; sudo journalctl -b | grep thumbnail | wc -l
10:37:23 up 19:36, 1 user, load average: 0.89, 1.06, 1.21
2171
$
我的想法是 gnome 试图引用的某个地方的缩略图以某种方式损坏 - 也许缩略图的宽度正在返回非浮点值？
我尝试删除以下目录：~/.cache/thumbnails 当我下次打开 nautilus 时重新创建它，导航到包含图片的目录并将视图更改为“显示网格”视图。
这没什么区别。
我怎样才能确定这是参考哪个缩略图？
编辑0：
$ ls -al ~/.local/share/gnome-shell/extensions
total 16
drwxrwxr-x 4 user user 4096 Mar 23 10:48 .
drwx------ 4 user user 4096 May 28 12:55 ..
drwxrwxr-x 8 user user 4096 Apr 13 10:21 [email protected]
drwxrwxr-x 4 user user 4096 Mar 11 13:19 [email protected]
$
$ ls -al /usr/share/gnome-shell/extensions
total 68
drwxr-xr-x 17 root root 4096 Nov 28 2019 .
drwxr-xr-x 7 root root 4096 Mar 17 15:16 ..
drwxr-xr-x 2 root root 4096 Jan 22 08:29 [email protected]
drwxr-xr-x 2 root root 4096 Jan 22 08:29 [email protected]
drwxr-xr-x 2 root root 4096 Jan 22 08:29 desktop-icons@csoriano
drwxr-xr-x 2 root root 4096 Jan 22 08:29 [email protected]
drwxr-xr-x 2 root root 4096 Jan 22 08:29 [email protected]
drwxr-xr-x 2 root root 4096 Jan 22 08:29 [email protected]
drwxr-xr-x 2 root root 4096 Jan 22 08:29 native-window-placement@gnome-shell-extensions.gcampax.github.com
drwxr-xr-x 2 root root 4096 Jan 22 08:29 [email protected]
drwxr-xr-x 2 root root 4096 Jan 22 08:29 screenshot-window-sizer@gnome-shell-extensions.gcampax.github.com
drwxr-xr-x 3 root root 4096 Nov 19 2020 [email protected]
drwxr-xr-x 3 root root 4096 Nov 19 2020 [email protected]
drwxr-xr-x 2 root root 4096 Jan 22 08:29 [email protected]
drwxr-xr-x 2 root root 4096 Jan 22 08:29 [email protected]
drwxr-xr-x 2 root root 4096 Jan 22 08:29 [email protected]
drwxr-xr-x 2 root root 4096 Jan 22 08:29 [email protected]
$
系统日志的输出（我只包括当前的系统日志）： https ://paste.ubuntu.com/p/BmRbpMVK8B/
编辑 1：我已删除 gsconnect 和系统监视器扩展并重新启动。我今天看到错误消息明显减少：
$ sudo grep gnome-shell /var/log/syslog | grep thumbnail
May 31 08:43:52 pc gnome-shell[5787]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
May 31 08:43:52 pc gnome-shell[5787]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
May 31 08:43:52 pc gnome-shell[5787]: message repeated 6 times: [ Error while loading thumbnail: Error: Argument width: value is out of range for gfloat]
May 31 08:43:53 pc gnome-shell[5787]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
May 31 08:43:53 pc gnome-shell[5787]: message repeated 19 times: [ Error while loading thumbnail: Error: Argument width: value is out of range for gfloat]
May 31 09:41:45 pc gnome-shell[5787]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
May 31 09:41:45 pc gnome-shell[5787]: message repeated 13 times: [ Error while loading thumbnail: Error: Argument width: value is out of range for gfloat]
May 31 13:08:12 pc gnome-shell[5787]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
May 31 13:08:13 pc gnome-shell[5787]: message repeated 13 times: [ Error while loading thumbnail: Error: Argument width: value is out of range for gfloat]
May 31 14:36:49 pc gnome-shell[5787]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
May 31 14:36:49 pc gnome-shell[5787]: message repeated 13 times: [ Error while loading thumbnail: Error: Argument width: value is out of range for gfloat]
May 31 15:41:26 pc gnome-shell[5787]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
May 31 15:41:36 pc gnome-shell[5787]: message repeated 27 times: [ Error while loading thumbnail: Error: Argument width: value is out of range for gfloat]
$
编辑2：
我现在只启用了以下扩展：
$ ls -al /usr/share/gnome-shell/extensions
total 20
drwxr-xr-x 5 root root 4096 May 31 16:03 .
drwxr-xr-x 7 root root 4096 Mar 17 15:16 ..
drwxr-xr-x 2 root root 4096 Jan 22 08:29 desktop-icons@csoriano
drwxr-xr-x 3 root root 4096 Nov 19 2020 [email protected]
drwxr-xr-x 3 root root 4096 Nov 19 2020 [email protected]
$
$ ls -al ~/.local/share/gnome-shell/extensions
total 8
drwxrwxr-x 2 user user 4096 May 28 17:17 .
drwx------ 4 user user 4096 Jun 1 09:10 ..
$
我重新安装了 gnome-shell-extension-prefs 和 libdazzle-1.0-0 并重新启动。以下是自启动以来的错误：
$ uptime; sudo journalctl -b | grep thumbnail
08:40:00 up 2 min, 1 user, load average: 0.97, 0.66, 0.26
Jun 01 08:38:03 pc audit[2679]: AVC apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/bin/evince-thumbnailer" pid=2679 comm="apparmor_parser"
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
Jun 01 08:38:35 pc gnome-shell[6136]: Error while loading thumbnail: Error: Argument width: value is out of range for gfloat
$
编辑3：
桌面右上角截图：
编辑4：
所以因为我已经删除了除核心扩展之外的所有扩展，并且在登录时仍然收到缩略图错误（即甚至没有做任何事情）我删除了我桌面上的所有文件（其中确实包括一些图像），删除了~/.local /thumbnails再次并重新启动
没有错误：
$ uptime; sudo journalctl -b | grep thumbnail
09:50:25 up 35 min, 1 user, load average: 0.78, 0.64, 0.51
Jun 01 09:15:06 cn-lat7490 audit[2668]: AVC apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/bin/evince-thumbnailer" pid=2668 comm="apparmor_parser"
$
而且，也没有缩略图目录：
$ ls -al ~/.cache/thumbnails/
ls: cannot access '/home/user/.cache/thumbnails/': No such file or directory
$
所以我导航到Nautilus 中的图片目录以生成一些缩略图，但我仍然没有错误
$ uptime; sudo journalctl -b | grep thumbnail; ls -al ~/.cache/thumbnails
09:54:04 up 39 min, 1 user, load average: 0.49, 0.57, 0.51
Jun 01 09:15:06 pc audit[2668]: AVC apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/bin/evince-thumbnailer" pid=2668 comm="apparmor_parser"
total 12
drwx------ 3 user user 4096 Jun 1 09:52 .
drwx------ 32 user user 4096 Jun 1 09:52 ..
drwx------ 2 user user 4096 Jun 1 09:52 normal
$
据我了解，cloud-init处理cloud/VM实例的早期初始化。我一直在使用它来帮助构建 KVM 虚拟机，并且效果非常好。
cloud-init我不明白的一个方面是一旦完成实例的初始创建会发生什么。
- 它是否会自动禁用自身以使其不再运行？
它可以在某些情况下再次执行（例如更改为
/etc/machine-id）吗？我很确定我通过运行强制它在某个时候重新运行sudo rm -rf /var/lib/cloud/*它的设计是为了让我
cloud-init在构建实例并投入生产后卸载，还是cloud-init即使在实例化后仍保持安装状态（什么也不做）？