我正在尝试在 Ubuntu 20.04 中编译一个 .tex 文件，它需要 XeLaTeX。
虽然我可以在命令行中使用 编译它xelatex file.tex，但它在 TeXstudio 中不起作用。
Fatal Package fontspec Error: The fontspec package requires either XeTeX or(fontspec) LuaTeX. \msg_fatal:nn {fontspec} {cannot-use-pdftex}
Emergency stop. \msg_fatal:nn {fontspec} {cannot-use-pdftex}
如何让 TeXstudio 使用 XeLaTeX？我可以在 TeXstudio 设置的命令部分看到 XeLaTeX，但它仍然不使用它。
我想在 ubuntu 上卸载 texlive 并使用apt remove texlive，但仍然找到了一些程序/usr/bin/latex，所以我手动删除了它（rm）。当我重新安装 texlive 时apt install texlive，/usr/bin/latex文件没有恢复。
我正在尝试安装 texlive-full 不幸的是，这里的答案无济于事！
错误：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
texlive-full : Depends: asymptote but it is not going to be installed
Depends: biber but it is not going to be installed
Depends: cm-super (>= 0.3.3-3) but it is not going to be installed
Depends: context but it is not going to be installed
Depends: dvipng but it is not going to be installed
Depends: feynmf but it is not going to be installed
Depends: fragmaster but it is not going to be installed
Depends: latex-cjk-all (>= 4.6.0+cvs20060714-2) but it is not going to be installed
Depends: latexmk but it is not going to be installed
Depends: lmodern (>= 0.93.3) but it is not installable
Depends: prerex (> 6.5.3-1) but it is not going to be installed
Depends: purifyeps but it is not going to be installed
Depends: texlive-base (>= 2019.20200218) but it is not going to be installed
Depends: texlive-bibtex-extra (>= 2019.202000218) but it is not going to be installed
Depends: texlive-binaries (>= 2019.20190605)
Depends: texlive-extra-utils (>= 2019.202000218) but it is not going to be installed
Depends: texlive-font-utils (>= 2019.202000218) but it is not going to be installed
Depends: texlive-fonts-extra (>= 2019.202000218) but it is not going to be installed
Depends: texlive-fonts-extra-doc (>= 2019.202000218) but it is not going to be installed
Depends: texlive-fonts-extra-links (>= 2019.202000218) but it is not going to be installed
Depends: texlive-fonts-recommended (>= 2019.20200218) but it is not going to be installed
Depends: texlive-fonts-recommended-doc (>= 2019.20200218) but it is not going to be installed
Depends: texlive-formats-extra (>= 2019.202000218) but it is not going to be installed
Depends: texlive-games (>= 2019.202000218) but it is not going to be installed
Depends: texlive-humanities (>= 2019.202000218) but it is not going to be installed
Depends: texlive-humanities-doc (>= 2019.202000218) but it is not going to be installed
Depends: texlive-lang-arabic (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-chinese (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-cjk (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-cyrillic (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-czechslovak (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-english (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-european (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-french (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-german (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-greek (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-italian (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-japanese (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-korean (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-other (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-polish (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-portuguese (>= 2019.20200218) but it is not going to be installed
Depends: texlive-lang-spanish (>= 2019.20200218) but it is not going to be installed
Depends: texlive-latex-base (>= 2019.20200218) but it is not going to be installed
Depends: texlive-latex-base-doc (>= 2019.20200218) but it is not going to be installed
Depends: texlive-latex-extra (>= 2019.202000218) but it is not going to be installed
Depends: texlive-latex-extra-doc (>= 2019.202000218) but it is not going to be installed
Depends: texlive-latex-recommended (>= 2019.20200218) but it is not going to be installed
Depends: texlive-latex-recommended-doc (>= 2019.20200218) but it is not going to be installed
Depends: texlive-luatex (>= 2019.20200218) but it is not going to be installed
Depends: texlive-metapost (>= 2019.20200218) but it is not going to be installed
Depends: texlive-metapost-doc (>= 2019.20200218) but it is not going to be installed
Depends: texlive-music (>= 2019.202000218) but it is not going to be installed
Depends: texlive-pictures (>= 2019.20200218) but it is not going to be installed
Depends: texlive-pictures-doc (>= 2019.20200218) but it is not going to be installed
Depends: texlive-plain-generic (>= 2019.202000218) but it is not going to be installed
Depends: texlive-pstricks (>= 2019.202000218) but it is not going to be installed
Depends: texlive-pstricks-doc (>= 2019.202000218) but it is not going to be installed
Depends: texlive-publishers (>= 2019.202000218) but it is not going to be installed
Depends: texlive-publishers-doc (>= 2019.202000218) but it is not going to be installed
Depends: texlive-science (>= 2019.202000218) but it is not going to be installed
Depends: texlive-science-doc (>= 2019.202000218) but it is not going to be installed
Depends: texlive-xetex (>= 2019.20200218) but it is not going to be installed
Depends: tipa (>= 2:1.2-2.1) but it is not going to be installed
Depends: vprerex (> 6.5.3-1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
另外我运行命令sudo apt-cache policy texlive-full，输出是：
texlive-full:
Installed: (none)
Candidate: 2019.20200302-1~18.04.york0
Version table:
2019.20200302-1~18.04.york0 500
500 http://ppa.launchpad.net/jonathonf/texlive/ubuntu bionic/main amd64 Packages
500 http://ppa.launchpad.net/jonathonf/texlive/ubuntu bionic/main i386 Packages
2019.20190311-1~18.04.york0 500
500 http://ppa.launchpad.net/jonathonf/texlive-2019/ubuntu bionic/main amd64 Packages
500 http://ppa.launchpad.net/jonathonf/texlive-2019/ubuntu bionic/main i386 Packages
2017.20180305-1 500
500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
500 http://archive.ubuntu.com/ubuntu bionic/universe i386 Packages
从上面的解决方案中，我尝试删除 libkpathsea6 但未安装：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'libkpathsea6' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
有没有人找到解决快照应用程序无法访问外部内容的问题？例如，Inkscape的著名 LaTeX 插件TeXText将不再工作，因为：
TexText for Inkscape 1.0 will not function if you installed Inkscape 1.0 via SNAP or
FLATPACK. The reason is that Inkscape 1.0 will run in sandboxed mode in these environments and,
hence, cannot access you LaTeX distribution to compile your snippets! This is a conceptional
problem of snap/ flatpack, not of TexText for Inkscape 1.0
同时，恢复到以前版本的 Inkscape 似乎不是一个解决方案，因为旧版本的 TeXText 使用过时的版本gtk，在新版本的 Ubuntu (>=18) 下无法正常工作。我的版本是 20.04。
它还会影响xournal++等中的 LaTeX 功能。
通过 snap 安装的应用程序根本无法访问 LaTeX。
该怎么办？
所以，我想从多个中制作一个 pdf。为此，我决定使用 gscan2pdf。我有一堆打开得很好的“图像-pdf”。
我必须插入一个只有几行文本的页面。我在乳胶中创建了一个简单的pdf：
\documentclass{article}
\title{Titel}
\begin{document}
\maketitle
test
\end{document}
而已。它编译得很好。我可以用我的普通 pdf 阅读器打开它。但是，当我尝试使用 gscan2pdf 打开它时，每次都会出现以下错误：
警告：gscan2pdf 需要每页一张图片，但这并不令人满意。PDF 可能没有正确导入。
如果您希望将扫描添加到现有 PDF，请使用“保存”对话框中的前置/附加到 PDF 选项。
会发生什么以及如何打开 pdf？
我正在运行 Ubuntu 20.04。我通过aptitude. 但是当我尝试构建文档时，我在 TexStudio 中得到以下错误：
File `letltxmacro.sty' not found. \RequirePackage{letltxmacro}[2008/06/13]
经过一番谷歌搜索，我发现它可能属于包gl2ps或libgl2ps*. 但是，它们在我的存储库中都不可用：
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package gl2ps
有可能解决这个问题吗？如果是，如何？
我正在尝试修复 Ubuntu 18.04 上的 MiKTeX 安装，或者至少我想删除它及其所有软件包以安装 TexLive。
几周前我尝试按照https://miktex.org/howto/install-miktex-unx安装它，我得到了
N: Skipping acquire of configured file 'universe/binary-i386/Packages' as repository 'http://miktex.org/download/ubuntu bionic InRelease' doesn't support architecture 'i386'
我没有太多时间来解决这个问题，所以我什么也没做。今天早上龚回到它，我在最后一步尝试了这个解决方案：
存储库“http://miktex.org/download/ubuntu xenial InRelease”不支持架构“i386”
然后我运行：
rob@rob-Ubuntu:~$ sudo apt install miktex
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies.
miktex : Depends: libhunspell-1.3-0 (>= 1.3.3) but it is not installable
Depends: libicu55 (>= 55.1-1~) but it is not installable
Depends: libmpfr4 (>= 3.1.3) but it is not installable
Depends: libpng12-0 (>= 1.2.13-4) but it is not installable
E: Unable to correct problems, you have held broken packages.
而且，最后
rob@rob-Ubuntu:~$ sudo aptitude install libhunspell-1.3-0
No candidate version found for libhunspell-1.3-0
Unable to apply some actions, aborting
似乎没有任何效果。
有什么建议么？
我想 1- 正确安装 Miktex 或 2- 取消与之相关的任何内容，然后安装 TexLive。
我正在运行一个我发现的 bash 脚本，它负责使用 gnuplot 生成乳胶。
该脚本包括以下行：
gnuplot_cmd="/usr/local/bin/gnuplot";
和
if [ ! -e $gnuplot_cmd ];
then
echo "# Error: gnuplot not found";
bash 脚本在我的计算机中引发错误。我已经gnuplot安装并且可以正常工作。但是，在/usr/local/bin/gnuplot.
关于如何解决此问题的任何建议？
谢谢！
我在 ubuntu 中的日志文件有问题。日志文件变得如此之大~8gb，以至于它减慢了我的机器速度。
该日志抱怨以下内容：
警告：未找到字体“cmr10”，尝试使用公制文件
页面：错误：/usr/share/texlive/texmf-dist/fonts/tfm/public/cm/cmr10.tfm：文件损坏，或者不是 TFM 文件
我能够在cmr10.tfm网上找到一个文件并将其替换为我拥有的文件。然而，问题仍然存在。
谁能指导我解决这个问题？我正在考虑重新安装texlive。帮助表示赞赏。