, где python3 дает несколько путей

Интересно, установил ли я python3 "умножить" на несколько действий при исправлении некоторых проблем. В моей убунту 18.04, набрав , где находится python3, даёт

python3: /usr/bin/python3.6m /usr/bin/python3.6m-config /usr/bin/python3.6m-config /usr/bin/python3.6m /usr/bin/python3 /usr/lib/python3. 7 /usr/lib/python3.6 /usr/lib/python3 /usr/lib/python3.8 /etc/python3.4 /etc/python3.6 /etc/python3.6. 5 /etc/python3 /usr/local/lib/python3.6 /usr/local/lib/python3.5 /usr/include/python3.6m /usr/include/python3.6 /usr/share/python3 /usr/share/man/man1/python3.1.gz

Нужно ли мне что-то убирать?

Кстати, нужно: python3 --версия дает

Python 3.6.9

Правка: dpkg -l | grep python3.[0-9] дает

rc  libpython3.4:amd64                            3.4.3-1ubuntu1~14.04.3                           amd64        Shared Python runtime library (version 3.4)
rc  libpython3.4-minimal:amd64                    3.4.3-1ubuntu1~14.04.3                           amd64        Minimal subset of the Python language (version 3.4)
rc  libpython3.5-minimal:amd64                    3.5.2-2ubuntu0~16.04.12                          amd64        Minimal subset of the Python language (version 3.5)
ii  libpython3.6:amd64                            3.6.9-1~18.04ubuntu1.3                           amd64        Shared Python runtime library (version 3.6)
ii  libpython3.6-dev:amd64                        3.6.9-1~18.04ubuntu1.3                           amd64        Header files and a static library for Python (v3.6)
ii  libpython3.6-minimal:amd64                    3.6.9-1~18.04ubuntu1.3                           amd64        Minimal subset of the Python language (version 3.6)
ii  libpython3.6-stdlib:amd64                     3.6.9-1~18.04ubuntu1.3                           amd64        Interactive high-level object-oriented language (standard library, version 3.6)
rc  python3.4                                     3.4.3-1ubuntu1~14.04.3                           amd64        Interactive high-level object-oriented language (version 3.4)
rc  python3.4-minimal                             3.4.3-1ubuntu1~14.04.3                           amd64        Minimal subset of the Python language (version 3.4)
rc  python3.5-minimal                             3.5.2-2ubuntu0~16.04.12                          amd64        Minimal subset of the Python language (version 3.5)
ii  python3.6                                     3.6.9-1~18.04ubuntu1.3                           amd64        Interactive high-level object-oriented language (version 3.6)
ii  python3.6-dev                                 3.6.9-1~18.04ubuntu1.3                           amd64        Header files and a static library for Python (v3.6)
ii  python3.6-minimal                             3.6.9-1~18.04ubuntu1.3                           amd64        Minimal subset of the Python language (version 3.6)

и apt-cache policy texlive-latex-base texlive-binaries. дает

texlive-latex-base:
  Installiert:           2017.20180305-1
  Installationskandidat: 2017.20180305-1
  Versionstabelle:
 *** 2017.20180305-1 500
        500 http://de.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
        500 http://de.archive.ubuntu.com/ubuntu bionic/main i386 Packages
        100 /var/lib/dpkg/status
texlive-binaries:
  Installiert:           2017.20170613.44572-8ubuntu0.1
  Installationskandidat: 2017.20170613.44572-8ubuntu0.1
  Versionstabelle:
 *** 2017.20170613.44572-8ubuntu0.1 500
        500 http://de.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        500 http://de.archive.ubuntu.com/ubuntu bionic-security/main amd64 Packages
        100 /var/lib/dpkg/status
     2017.20170613.44572-8build1 500
        500 http://de.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

pdftex -v и pdflatex -v оба дают

pdfTeX 3.14159265-2.6-1.40.18 (TeX Live 2017/Debian)
kpathsea version 6.2.3
Copyright 2017 Han The Thanh (pdfTeX) et al.
There is NO warranty.  Redistribution of this software is
covered by the terms of both the pdfTeX copyright and
the Lesser GNU General Public License.
For more information about these matters, see the file
named COPYING and the pdfTeX source.
Primary author of pdfTeX: Han The Thanh (pdfTeX) et al.
Compiled with libpng 1.6.34; using libpng 1.6.34
Compiled with zlib 1.2.11; using zlib 1.2.11
Compiled with poppler version 0.62.0