xz, unxz, xzcat, lzma, unlzma, lzcat
Compress or decompress .xz and .lzma files

xz [option] [file]

       unxz --decompress.                           unlzma --format=lzma --decompress.
       xzcat --decompress --stdout.                 lzcat --format=lzma --decompress --stdout.  
General-purpose data compression tool with command line syntax similar to gzip and bzip2. LZMA Utils and raw compressed streams with no container format headers are also supported.

Without file reads from standard input and writes to standard output.

o When compressing, .xz or .lzma is appended to the source filename
o When decompressing, suffix is removed, recognizes .txz and .tlz, and replaces them with the .tar suffix.