INSTALL.txt

* Install from source:

sudo make install

* Install rpm (the only dependency are bash and m4):

wget -r --no-directories -l1 -np https://download.opensuse.org/repositories/home:/andriinikitin:/environ/rpm/noarch/ -A "environ-*.noarch.rpm"
rpm -i environ*.rpm

* Install deb (the only dependency are bash and m4):

wget -r --no-directories -l1 -np https://download.opensuse.org/repositories/home:/andriinikitin:/environ/deb/amd64/ -A "environ_*.deb"
dpkg -i environ*.deb

* Add repository on openSUSE:

zypper ar -f http://download.opensuse.org/repositories/home:andriinikitin/rpm environ
zypper --gpg-auto-import-keys ref environ
zypper install environ

* Add repository on Debian/Ubuntu:

echo 'deb http://download.opensuse.org/repositories/home:andriinikitin:environ/deb/ /' > /etc/apt/sources.list.d/environ.list
curl -fsSL http://download.opensuse.org/repositories/home:andriinikitin:environ/deb/Release.key | gpg --dearmor | tee /etc/apt/trusted.gpg.d/environ.gpg
apt update
apt install environ