Untar in linux command5/7/2023 D dictionaryName Compress, decompress or benchmark using dictionary dictionaryName. This option only works in combination with very high compression levels (>=10). Compressed data will be larger as a consequence (typically by ~0.5%), while decompression speed will be improved by 5-20%, depending on use cases. favor-decSpeed Generate compressed data optimized for decompression speed. Similarly, if a compression level is set after -fast, it overrides it. This setting overrides compression level if one was set previously. The higher the value, the faster the compression speed, at the cost of some compression ratio. fast Switch to ultra-fast compression levels. Decompression speed remains fast at all settings. Speed/compression trade-off will vary depending on data to compress. Recommended values are 1 for fast compression (default), and 9 for high compression. Values above 12 are considered the same as 12. Higher values trade compression speed for compression ratio. Operation modifiers -# Compression level, with # being any value from 1 to 12. note : current implementation is limited to single-frame. b# Benchmark mode, using # compression level. t -test Test the integrity of compressed. decompress is also the default operation when the input filename has an. z can also be used to force compression of an already compressed. This is the default operation mode when no operation mode option is specified, no other operation mode is implied from the command name (for example, unlz4 implies -decompress), nor from the input file name (for example, a file extension. Multiple commandsWhen multiple contradictory commands are issued on a same command line, only the latest one will be applied. They must be clearly separated by a space. Short commands can be concatenated together. OPTIONS Short commands concatenationIn some cases, some options can be expressed using short command -x or long command -long-word. Then lz4cat foo.lz4 is equivalent to cat file1 file2. lz4 will decompress such files as if they were a single.
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