Zsplit

zsplit - will read big devices or files and make compressed split image chunks of it.

usage: zsplit [OPTIONS] SOURCE

zsplit can read from SOURCE, which can be an input device, -stdin or -file, compress and split the output image file into chunks of specified size. These chunks could be saved on any medium for later restoring to its origin with a help of unzsplit.

zsplit returns 0 if during the operation no error was detected, otherwise -1.

SOURCE: can be a file (example: /path_to_file/file), device (example: /dev/hda), partition (example: /dev/hda1) or stdin (-).

OPTIONS:

-b, --buffer SIZE: Setup read/write buffer SIZE (in kibibytes) to optimize read/write speed. Example of SIZE: 2 (2048 bytes). If this option is not used, the default size is 8 (8192 bytes).

-c, --stdout: Write output to stdout (standard output).

-d, --debug: The debug information will be written into the debug.log file in the current directory. If this option is not used, the debug information will be printed to stderr.

-i, --indir DIR: Input directory (DIR is directory which containes the SOURCE).

-N, --outname OUT_NAME: This is the common part of file name used for all the split up files if this option is not specified then the input-file's name is used to create this common part. If input-file name could not be used (example: stdin) then the default OUT_NAME will be created based on current date and creation time.

-h, --help: Shows this message.

-o, --outdir DIR: Output directory (DIR is directory which containes the output files).

-r, --noerror: If during the read operation I/O error happens, safely ignore these errors and read farther.

-s, --endsize SIZE: Split the file into chunks of this size SIZE. Example of SIZE: 1000s (1000 sectors [1s=512 bytes]), 10k (10 KiB), 100M (100 MiB) or 50G (50 GiB). If this option is not used the output file will not be split.

-?, --usage: Shows short usage information.

-v, --version: Prints out a current version number.

-#, --fast (or --best): Regulate the speed of compression using the specified digit #, where 0 indicates no compression, 1 indicates the fastest (--fast) compression method (less compression) and 9 indicates the slowest (--best) compression method. The default compression level is 6.

EXAMPLES:

zsplit -s 4.5G -N WinXP_bkp -d /dev/hda

zsplit reads device /dev/hda, compresses using default compression method, splits up the chunks of size 4.5 gibibyte (GiB), saves these chunks using common name part WinXP_bkp as: WinXP_bkp_0.spl.zp, WinXP_bkp_1.spl.zp ..., and writes the debug information to the debug.log file in the current directory.

zsplit -s 100M -N test_img -o /home/user -d -

zsplit reads from stdin, compresses using default compression method, splits up the chunks of size 100 mebibyte (MiB), saves these chunks using common name part test_img as: test_img_0.spl.zp, test_img_1.spl.zp ... into the directory /home/user, and writes the debug information to the debug.log file in the current directory.

zsplit -N test_bkp /dev/hda

zsplit reads device /dev/hda, compresses using default compression method, saves the output file as test_bkp_0.spl.zp in the current directory and writes the debug information to stderr.