Installation and Test of the Z80 cross assembler:The executable program could be installed under /usr/local/bin, but on most systems this would require root permissions, which you might not have. So the example shows how to install it in the bin directory of the users home directory.
cd ~/z80pack-x.y/z80asm make mv z80asm ~/bin make cleanDirectory ~/z80pack-x.y/z80src includes some example assembler source code for testing. The examples there could be assembled with this commands:
z80asm -l -sn float z80asm -l -sn z80main