We originally saw this issue in the IDE's automated builds, and I'm able to reproduce locally.

On ubuntu,`quarto tools install tinytex` does not properly install tinytex:
```
$ quarto tools install tinytex
Installing tinytex
[✓] Downloading TinyTex v2022.02
[✓] Unzipping TinyTeX-v2022.02.tar.gz
[✓] Moving files
[✓] Verifying tlgpg support
[✓] Default Repository: https://mirror.las.iastate.edu/tex-archive/systems/texlive/tlnet/
[✓] Updating paths
Installation successful

To complete this installation, please restart your system.

$ quarto tools
[✓] Reading Tool Data
Tool                Status                          Installed     Latest
tinytex             Not installed                   v2022.02      v2022.02
```

While there is a message instructing the user to restart their system, this doesn't fix the issue. Only after manually updating the `PATH`, does quarto finds tinytex:
```
$ PATH=$PATH:~/bin
$ quarto tools
[✓] Reading Tool Data
Tool                Status                          Installed     Latest
tinytex             Up to date                      v2022.02      v2022.02
```

On macOS, running `quarto tools install tinytex` works as I'd expect and quarto is able to find it immediately:
```
$ quarto tools install tinytex 
Installing tinytex
[✓] Downloading TinyTex v2022.02
[✓] Unzipping TinyTeX-v2022.02.tgz
[✓] Moving files
[✓] Verifying tlgpg support
[✓] Default Repository: https://mirrors.rit.edu/CTAN/systems/texlive/tlnet/
[✓] Updating paths
Installation successful

$ quarto tools 
[✓] Reading Tool Data
Tool                Status                          Installed     Latest
tinytex             Up to date                      v2022.02      v2022.02
```
dragonstyle
2022-02-09T16:43:28Z
melissa-barca
closed
Quarto does not complete tinytex install on ubuntu
https://github.com/quarto-dev/quarto-cli/issues/326