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zupdate - Online in the Cloud

Run zupdate in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command zupdate that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


zupdate - recompress bzip2, gzip, xz files to lzip files

SYNOPSIS


zupdate [options] [files]

DESCRIPTION


Zupdate recompresses files from bzip2, gzip, and xz formats to lzip format. The originals
are compared with the new files and then deleted. Only regular files with standard file
name extensions are recompressed, other files are ignored. Compressed files are
decompressed and then recompressed on the fly; no temporary files are created. The lzip
format is chosen as destination because it is by far the most appropriate for long-term
data archiving.

If the lzip compressed version of a file already exists, the file is skipped unless the
'--force' option is given. In this case, if the comparison with the existing lzip version
fails, an error is returned and the original file is not deleted. The operation of zupdate
is meant to be safe and not produce any data loss. Therefore, existing lzip compressed
files are never overwritten nor deleted.

Exit status is 0 if all the compressed files were successfully recompressed (if needed),
compared and deleted (if requested). Non-zero otherwise.

OPTIONS


-h, --help
display this help and exit

-V, --version
output version information and exit

-f, --force
do not skip a file even if the .lz exists

-k, --keep
keep (don't delete) input files

-l, --lzip-verbose
pass a -v option to the lzip compressor

-M, --format=<list>
process only the formats in <list>

-N, --no-rcfile
don't read runtime configuration file

-q, --quiet
suppress all messages

-r, --recursive
operate recursively on directories

-v, --verbose
be verbose (a 2nd -v gives more)

-0 .. -9
set compression level [default 9]

--bz2=<command>
set compressor and options for bzip2 format

--gz=<command>
set compressor and options for gzip format

--lz=<command>
set compressor and options for lzip format

--xz=<command>
set compressor and options for xz format

REPORTING BUGS


Report bugs to [email protected]
Zutils home page: http://www.nongnu.org/zutils/zutils.html

COPYRIGHT


Copyright © 2015 Antonio Diaz Diaz. License GPLv2+: GNU GPL version 2 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it. There is NO WARRANTY,
to the extent permitted by law.

Use zupdate online using onworks.net services


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