I try to use imgmin (written in C) by rflynn (see on GitHub rflynn/imgmin). So I followed the instructions
sudo apt-get install -y autoconf libmagickwand-dev pngnq pngcrush pngquant
git clone https://github.com/rflynn/imgmin.git
cd imgmin
autoreconf -fi
./configure
make
sudo make install
imgmin original.jpg optimized.jpg
I compiled and installed it without any problems (or notices). But I can't run "imgmin", it always tells me:
-bash: imgmin: command not found
Where is my mistake? Thank you for any suggestion. I'm running on Ubuntu Server 16.04 LTS with latest updates.