[Tex/LaTex] Permission problem when installing package from tlmgr

packagestexlive

I migrated from MiKTeX on windows to TeXLive in ubuntu. At first I installed texlive-full from ubuntu repositories but I realized that I wanted to install more packages which isn't very convenient when there is no tlmgr.

So I decided to removeTeXLive and reinstall it from TUG. The installation had no problems. Then I added the following lines to bashrc

export PATH=$PATH:/usr/local/texlive/2014/bin/i386-linux
export PATH=$PATH:/usr/local/texlive/2014/tlpkg/

and then I run a simple document and it seemed to be working. I tried to install a package(i.e. units) through tlmgr but I don't have permission to write to a specific directory. What I did was to use sudo privilleges but again no luck. My effort is the following

thanos@thanos-laptop:~$ tlmgr install units
You don't have permission to change the installation in any way,
specifically, the directory /usr/local/texlive/2014/tlpkg/ is not writable.
Please run this program as administrator, or contact your local admin.
thanos@thanos-laptop:~$ sudo tlmgr install units
[sudo] password for thanos: 
sudo: tlmgr: command not found

I also tried through the relevant tlmgr's gui but I get the same message as above.

What can I do to install packages through tlmgr?

Best Answer

What I did was to let sudo know about the modification of the $PATH variable. This was done typing the following command on terminal

sudo env PATH="$PATH" tlmgr

In this way, I somehow enabled sudo in tlmgr. After that packages can be installed using 

sudo tlmgr install package
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