我试图在我的启动器中为 evince（使用 flatpak 安装）添加一个自定义桌面图标。首先我用鹦鹉螺做实验；我创造了这个test.desktop
[Desktop Entry]
Name=My script
Exec=nautilus
Type=Application
我把它移到.local/share/applications并使用sudo desktop-file-install test.desktop它，它按预期工作。现在我将此文件重命名为custom_evince.desktop并将脚本修改为；
[Desktop Entry]
Name=Evince
Exec=flatpak run org.gnome.Evince
Type=Application
遵循与以前相同的程序，它也按预期工作。
问题：我的初始图标My script在启动器中仍然存在（并且可以正常工作），我不希望它在那里。如何删除My script但保留Evince
我试图在我的 Ubuntu 16.04（32 位）上安装 MiKTeX。但屏幕上出现以下错误。我对这种分布的了解有限。如何解决？请帮我。
akhil@akhil-G31T-M9:~$ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys D6BC243565B2087BC3F897C9277A7293F59E4889
[sudo] password for akhil:
Sorry, try again.
[sudo] password for akhil:
Executing: /tmp/tmp.LK50NQI2bb/gpg.1.sh --keyserver
hkp://keyserver.ubuntu.com:80
--recv-keys
D6BC243565B2087BC3F897C9277A7293F59E4889
gpg: requesting key F59E4889 from hkp server keyserver.ubuntu.com
gpg: key F59E4889: public key "MiKTeX Packager <[email protected]>" imported
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
akhil@akhil-G31T-M9:~$ echo "deb http://miktex.org/download/ubuntu xenial universe" | sudo tee /etc/apt/sources.list.d/miktex.list
deb http://miktex.org/download/ubuntu xenial universe
akhil@akhil-G31T-M9:~$ sudo apt-get update
Hit:1 http://in.archive.ubuntu.com/ubuntu xenial InRelease
Hit:2 http://in.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:4 http://security.ubuntu.com/ubuntu xenial-security InRelease
Get:3 https://ftp.yzu.edu.tw/CTAN/systems/win32/miktex/setup/deb xenial InRelease [2,034 B]
Fetched 2,034 B in 10s (195 B/s)
Reading package lists... Done
N: Skipping acquire of configured file 'universe/binary-i386/Packages' as repository 'http://miktex.org/download/ubuntu xenial InRelease' doesn't support architecture 'i386'
akhil@akhil-G31T-M9:~$ sudo apt-get install miktex
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package miktex