Info Catalog lzip: Trailing data lzip: Top lzip: Problems

lzip: Examples

 
 9 A small tutorial with examples
 ********************************
 
 WARNING! Even if lzip is bug-free, other causes may result in a corrupt
 compressed file (bugs in the system libraries, memory errors, etc).
 Therefore, if the data you are going to compress are important, give the
 option '--keep' to lzip and don't remove the original file until you verify
 the compressed file with a command like 'lzip -cd file.lz | cmp file -'.
 Most RAM errors happening during compression can only be detected by
 comparing the compressed file with the original because the corruption
 happens before lzip compresses the RAM contents, resulting in a valid
 compressed file containing wrong data.
 
 
 Example 1: Extract all the files from archive 'foo.tar.lz'.
 
        tar -xf foo.tar.lz
      or
        lzip -cd foo.tar.lz | tar -xf -
 
 
 Example 2: Replace a regular file with its compressed version 'file.lz' and
 show the compression ratio.
 
      lzip -v file
 
 
 Example 3: Like example 2 but the created 'file.lz' is multimember with a
 member size of 1 MiB. The compression ratio is not shown.
 
      lzip -b 1MiB file
 
 
 Example 4: Restore a regular file from its compressed version 'file.lz'. If
 the operation is successful, 'file.lz' is removed.
 
      lzip -d file.lz
 
 
 Example 5: Verify the integrity of the compressed file 'file.lz' and show
 status.
 
      lzip -tv file.lz
 
 
 Example 6: The right way of concatenating the decompressed output of two or
 more compressed files. ⇒Trailing data.
 
      Don't do this
        cat file1.lz file2.lz file3.lz | lzip -d -
      Do this instead
        lzip -cd file1.lz file2.lz file3.lz
 
 
 Example 7: Decompress 'file.lz' partially until 10 KiB of decompressed data
 are produced.
 
      lzip -cd file.lz | dd bs=1024 count=10
 
 
 Example 8: Decompress 'file.lz' partially from decompressed byte at offset
 10000 to decompressed byte at offset 14999 (5000 bytes are produced).
 
      lzip -cd file.lz | dd bs=1000 skip=10 count=5
 
 
 Example 9: Compress a whole device in /dev/sdc and send the output to
 'file.lz'.
 
        lzip -c /dev/sdc > file.lz
      or
        lzip /dev/sdc -o file.lz
 
 
 Example 10: Create a multivolume compressed tar archive with a volume size
 of 1440 KiB.
 
      tar -c some_directory | lzip -S 1440KiB -o volume_name -
 
 
 Example 11: Extract a multivolume compressed tar archive.
 
      lzip -cd volume_name*.lz | tar -xf -
 
 
 Example 12: Create a multivolume compressed backup of a large database file
 with a volume size of 650 MB, where each volume is a multimember file with
 a member size of 32 MiB.
 
      lzip -b 32MiB -S 650MB big_db
 

Info Catalog lzip: Trailing data lzip: Top lzip: Problems