xz:tldr:88f34

The command "xz --format=${lzma} ${filename}" is used to compress a file using the xz compression algorithm with the lzma format.

Here's a breakdown of the command:

• "xz": This is the command-line tool used for file compression and decompression using the LZMA/LZMA2 compression algorithms.
• "--format=${lzma}": This option specifies the compression format to be used. In this case, it is set to ${lzma}, which means that the lzma format will be used. The lzma format is a variant of the LZ77 algorithm, optimized for high compression ratio.
• "${filename}": This variable represents the name of the file that you want to compress. You need to replace ${filename} with the actual filename or path to the file you wish to compress.

In summary, this command compresses the specified file using the xz compression algorithm with the lzma format, resulting in a compressed file with the ".xz" extension.