mjhjmtu

I'm trying to have both MikTex and TexLive working on my Ubuntu Linux. Both the tex distros have been installed through apt-get. I know this is related to settings on the PATH variable. So what I did is:

Find TexLive executables location:

whereis texlive

That gives:

texlive: /usr/local/texlive /usr/share/texlive

so I added the first one to the PATH, by making sure it comes as first:

PATH=/usr/local/texlive/2018/bin/x86_64-linux:$PATH ; export PATH

Checking the PATH indeed gives:

/usr/local/texlive/2018/bin/x86_64-linux:/home/stefano/mpich-install/bin:/home/stefano/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

However, if I do:

tex --version

Still I get:

MiKTeX-TeX 2.9.6300 (3.14159265) (MiKTeX 2.9.6700) Copyright (C) 1982
by D. E. Knuth; all rights are reserved. TeX is a trademark of the
American Mathematical Society. using bzip2 version 1.0.6, 6-Sept-2010
compiled with curl version 7.58.0; using libcurl/7.58.0 OpenSSL/1.1.0g
zlib/1.2.11 libidn2/2.0.4 libpsl/0.19.1 (+libidn2/2.0.4)
nghttp2/1.30.0 librtmp/2.3 compiled with expat version 2.2.5; using
expat_2.2.5 compiled with liblzma version 50020022; using 50020022
compiled with MiKTeX Application Framework version 2.6636; using
2.6636 compiled with MiKTeX Core version 6.6704; using 6.6704 compiled with MiKTeX Archive Extractor version 1.6300; using 1.6300 compiled
with MiKTeX Package Manager version 2.6700; using 2.6700 compiled with
openssl version OpenSSL 1.1.0g 2 Nov 2017; using OpenSSL 1.1.0g 2 Nov
2017 compiled with uriparser version 0.8.4 compiled with zlib version
1.2.11; using 1.2.11

And the same goes for pdflatex and xelatex. Notice that:

which pdflatex

Gives:

/home/stefano/bin/pdflatex

Which is actually a symlink as I can see from:

ls -lah | grep pdflatex

Output:

lrwxrwxrwx 1 root root 22 mag 29 14:37 pdflatex -> /usr/bin/miktex-pdftex

What I'm missing?