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I want to install the package undertilde.

When I try to install using method 1 as given in the answer to the question

How do I install an individual package on a Linux system?

i.e. using tlmgr - I get the following errors.

Cannot determine type of tlpdb from /home//texmf!

cannot setup TLPDB in /home/****/texmf at /usr/bin/tlmgr line 6424.

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  • if your tex is the linux supplied one not installed directly from tug use your package manage yum or dnf or whatever you use for linux updates Nov 10, 2021 at 9:02
  • As David says, sadly the Linux fists cripple tlmgr so it can no longer install packages (their distribution system, their choice). If you're on a Debian/apt based system you can install apt-file and use it to ask Debian which Debian package provides the file undertilde.sty
    – daleif
    Nov 10, 2021 at 9:32
  • @daleif if you mean apt-file search undertilde.sty It yields nothing. Nov 10, 2021 at 11:18
  • @DavidCarlisle I am sorry, I do not understand. Could you please be more specific? Nov 10, 2021 at 11:20
  • Well given that CTAN lists that only MikTeX have undertilde (ctan.org/pkg/undertilde) that is not a surprise, then it is not available via Linux dists (as they use TeXLive) or via tlmgr (for whose using a tlmgr that works)
    – daleif
    Nov 10, 2021 at 11:25

1 Answer 1

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After struggling a bit and with help of comments above, I came to the conclusion that using undertilde package itself is a problem. As @daleif noted that the package has not been updated since 2000. Therefore, the solution is to use some other package to obtain the functionality of the undertilde pacakge.

Specifically, I was using the \utilde command from the undertilde package. I was able to do that using \underset command. For example, if I needed a tilde beneath r, I will write \underset{\sim}{r} to substitute \utilde{r}.

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