LaTex的安装并不需要管理员权限
You do not need to be root (administrator on Windows) to install, use, or manage TeX Live. Indeed, we recommend installing it as a normal user, except perhaps on MacOSX, where it's conventional to install as administrator.
下面是Ubuntu的安装方法
第一步: 下载ISO文件(清华镜像源)
下载地址: https://mirrors.tuna.tsinghua.edu.cn/CTAN/systems/texlive/Images/texlive2020-20200406.iso
其他镜像站点，可以在 https://ctan.org/mirrors 进行选择
第二步: 在Windows上解压缩ISO文件，然后上传到服务器, 我们假设上传到家目录下的texlive
第三步: 运行安装命令
cd texlive
perl install-t
输出信息如下
======================> TeX Live installation procedure <=====================
======> Letters/digits in <angle brackets> indicate <=======
======> menu items for actions or customizations <=======
Detected platform: GNU/Linux on x86_64
<B> set binary platforms: 1 out of 6
<S> set installation scheme: scheme-full
<C> set installation collections:
40 collections out of 41, disk space required: 6516 MB
<D> set directories:
TEXDIR (the main TeX directory):
!! default location: /usr/local/texlive/2020
!! is not writable or not allowed, please select a different one!
TEXMFLOCAL (directory for site-wide local files):
/usr/local/texlive/texmf-local
TEXMFSYSVAR (directory for variable and automatically generated data):
/usr/local/texlive/2020/texmf-var
TEXMFSYSCONFIG (directory for local config):
/usr/local/texlive/2020/texmf-config
TEXMFVAR (personal directory for variable and automatically generated data):
~/.texlive2020/texmf-var
TEXMFCONFIG (personal directory for local config):
~/.texlive2020/texmf-config
TEXMFHOME (directory for user-specific files):
~/texmf
<O> options:
[ ] use letter size instead of A4 by default
[X] allow execution of restricted list of programs via \write18
[X] create all format files
[X] install macro/font doc tree
[X] install macro/font source tree
[ ] create symlinks to standard directories
[X] after install, set CTAN as source for package updates
<V> set up for portable installation
Actions:
<I> start installation to hard disk
<P> save installation profile to 'texlive.profile' and exit
<H> help
<Q> quit
Enter command:
我们需要输入D进入更改界面，然后输入1，输入我们目标安装路径，输入R回到主目录，最后输入I进行安装。
最后安装结果之后会有如下提示
Add /home/xzg/opt/texlive/texmf-dist/doc/man to MANPATH.
Add /home/xzg/opt/texlive/texmf-dist/doc/info to INFOPATH.
Most importantly, add /home/xzg/opt/texlive/bin/x86_64-linux
to your PATH for current and future sessions.
Logfile: /home/xzg/opt/texlive/install-tl.log
即在 ~/.bashrc 或 ~/.zshrc 这些配置文件下添加如下内容
export MANPATH=$MANPATH:/home/xzg/opt/texlive/texmf-dist/doc/man
export INFOPATH=$INFOPATH:/home/xzg/opt/texlive/texmf-dist/doc/info
export PATH=$PATH:/home/xzg/opt/texlive/bin/x86_64-linux
