Seems nobody presented the easy way:
Search Aminet for "lha.run" which is a self-extracting archive containing LHA.
Save lha.run to a new directory and run it. This will result in a few files:
LhA.guide - the documentation
lha_68020 - LHA for Motorola 68020 CPU
lha_68040 - LHA for Motorola 68040 CPU
lha_68k - LHA for default Motorola 68000 CPU
lha_68k.readme - a short readme file
Rename "lha_68k" to "lha" and copy it to Sys:c/ (i.e. the "c" directory of your boot floppy or harddisk).
When now entering "lha" in CLI, this shows LHA usage.
To view the contents of an archive, use the command:
lha v archive.lha
To extract an archive, try:
lha e archive.lha
Best regards,
McSquirrel
