tlmgr in Ubuntu 20.04: "Local TeX Live (2019) is older than remote repository (2020)" (and subsequent issues)
I had the same issue and solved it by reinstalling TexLive.
Firstly, you should uninstall all existing TexLive installations:
sudo apt-get remove texlive*
rm -rf /usr/local/texlive/2020
rm -rf ~/.texlive2020
rm -rf /usr/local/texlive/2019
rm -rf ~/.texlive2019
Next, you must create a place for your new TexLive distribution to live, and give your user ownership of this directory
sudo mkdir -p /usr/local/texlive/2020
sudo chown "$USER" /usr/local/texlive
Download and manually install TexLive
mkdir /tmp/texlive
cd /tmp/texlive
wget http://mirror.ctan.org/systems/texlive/tlnet/install-tl.zip
unzip ./install-tl.zip -d install-tl
cd install-tl/install-tl-$(date +%Y%m%d)
perl ./install-tl
When you are in perl console then press "i" to install
Enter command: i
Post-Installation: you need to add to the path environment
export MANPATH="$MANPATH:/usr/local/texlive/2020/texmf-dist/doc/man"
export INFOPATH="$INFOPATH:/usr/local/texlive/2020/texmf-dist/doc/info"
export PATH=/usr/local/texlive/2020/bin/x86_64-linux:$PATH
Test your installation
latex small2e
I recently have the same problem, you need to edit the path correctly by going to your .bashrc running:
gedit /home/<username>/.bashrc
and setting in the .bashrc file:
export PATH=/usr/local/texlive/2020/bin/x86_64-linux:$PATH
export MANPATH=/usr/local/texlive/2020/texmf-dist/doc/man:$MANPATH
export INFOPATH=/usr/local/texlive/2020/texmf-dist/doc/info:$INFOPATH
(Maybe you need to check your installation folder for this, if it is default then you can use these code). Initially i have only this (Only for check, don´t use this):
export PATH=:$PATH/usr/local/texlive/2020/bin/x86_64-linux
export MANPATH=/usr/local/texlive/2020/texmf-dist/doc/man
export INFOPATH=/usr/local/texlive/2020/texmf-dist/doc/info
When you have corrected the PATH re-run the sh and you can get this:
sh update-tlmgr-latest.sh -- --upgrade
Verifying archive integrity... All good.
Uncompressing TeX Live Manager Updater 100%
./runme.sh: updating in /usr/local/texlive/2020...
./runme.sh: tlmgr version says this is TeX Live 2020,
./runme.sh: and this updater script created: Wed Jun 3 00:11:12 CEST 2020.
./runme.sh: have TL 2020, new version also 2020;
./runme.sh: using --upgrade doesn't make sense; terminating.
(./runme.sh: makeself creation date = Wed Jun 3 00:11:12 CEST 2020.)
And finally update your tlmgr.
EDIT These steps don't solve the problem for install packages (at least for me). I want to give more steps for finally can install or use your tlmgr, ehwn I try to use tlmgr updated I got:
You don't have permission to change the installation in any way,
specifically, the directory /usr/local/texlive/2020/tlpkg/ is not writable.
Please run this program as administrator, or contact your local admin.
tlmgr: An error has occurred. See above messages. Exiting.
For solve this you need to install programs following:
sudo env PATH="$PATH" tlmgr install <package> --dry-run
Reference: Last comment in Permission problem when installing package from tlmgr
And if you need, update tlmgr using:
sudo env PATH="$PATH" tlmgr update --self
Or if you want to update all your instalation try:
sudo env PATH="$PATH" tlmgr update --self --all
the short solution is: this error is because your TexLive 2019 is trying to use a TexLive 2020 ftp repository. You should change to the right (correct) repository. Type this commands in a Terminal:
tlmgr repository add ftp://tug.org/historic/systems/texlive/2019/tlnet-final
tlmgr repository list
tlmgr repository remove http://mirror.ctan.org/systems/texlive/tlnet
tlmgr option repository ftp://tug.org/historic/systems/texlive/2019/tlnet-final
After that you can install the package with this command:
tlmgr --verify-repo=none install dirtree
I added the --verify-repo parameter to avoid get this error: tlmgr: unexpected return value from verify_checksum: -5 for main repository
This 2nd error is previously explained here: https://tex.stackexchange.com/questions/537376/tlmgr-unexpected-return-value-from-verify-checksum-5-for-main-repository/537379#537379