Linux добавить в путь
export PATH=$PATH:/place/with/the/file
Amused Albatross
export PATH=$PATH:/place/with/the/file#Ubuntu 20.04:
# echo 'export PATH=$PATH:/path/to/directory/here' >> ~/.bashrc
echo 'export PATH=$PATH:$HOME/Android/Sdk/emulator' >> ~/.bashrc
#It's better to put $PATH at the beginning that way
#the new path environment variable will append to the old one
#update current shell
source ~/.bashrc