There is a package 'lha' in Precise but not in Trusty. However, there is something called 'lhasa' in Trusty and it appears to be a replacement.
$ apt-cache show lhasa
.
.
.
Description-en: lzh archive decompressor
Lhasa lha is a tool for parsing LHA (.lzh) archives and a free
replacement for the Unix LHA tool.
.
Currently it is only possible to read from (ie. decompress) archives;
generating (compressing) LHA archives may be an enhancement for future
versions. The aim is to be compatible with as many different variants
of the LHA file format as possible, including LArc (.lzs) and
PMarc (.pma).
.
The command line tool aims to be interface-compatible with the non-free
Unix LHA tool (command line syntax and output), for backwards
compatibility with tools that expect particular output.
There is a package 'lha' in Precise but not in Trusty. However, there is something called 'lhasa' in Trusty and it appears to be a replacement.
$ apt-cache show lhasa compatible with the non-free
.
.
.
Description-en: lzh archive decompressor
Lhasa lha is a tool for parsing LHA (.lzh) archives and a free
replacement for the Unix LHA tool.
.
Currently it is only possible to read from (ie. decompress) archives;
generating (compressing) LHA archives may be an enhancement for future
versions. The aim is to be compatible with as many different variants
of the LHA file format as possible, including LArc (.lzs) and
PMarc (.pma).
.
The command line tool aims to be interface-
Unix LHA tool (command line syntax and output), for backwards
compatibility with tools that expect particular output.