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Full Discussion: Cpio all *.txt-files out of folders to just one directory
Top Forums Shell Programming and Scripting Cpio all *.txt-files out of folders to just one directory Post 302951702 by derekludwig on Sunday 9th of August 2015 10:36:22 PM
Old 08-09-2015
The issue with using cpio is that it preserves the directory hierarchy. You could go with:
Code:
find /.../sourcedir -type f -name '*.txt' -exec cp {} /.../targetdir

but that would generate a process for every file, and cp is not most efficient way to copy files.

Are you trying to just flatten the directory hierarchy? If so, perhaps something like:
Code:
find /.../sourcedir -type f -name '*.txt' -print0 | xargs -0 ln -t /.../targetdir

which would create hardlinks to all the files in the target directory. Use the -s option of ln if the target directory is in a different filesystem.

If you need to make a copy of the files:
Code:
TMPDIR=$(mktemp -d)
trap "rm -f ${TMPDIR}" EXIT
find /.../sourcedir -type f -name '*.txt' -print0 | xargs -0 ln -s -t ${TMPDIR}
cd ${TMPDIR}
ls -1fA | cpio -pLvum /.../targetdir

Be advised that nothing is being done for filename collisions.

You also specified find /path/to/folder .*.txt. The -name option is missing, and use single-quotes. Otherwise the shell globbing expansion may give you a surprise.
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LEARN ABOUT SUSE

cpio

CPIO(1L)																  CPIO(1L)

NAME

       cpio - copy files to and from archives

SYNOPSIS

       cpio   {-o|--create}   [-0acvABLV]   [-C   bytes]   [-H	 format]   [-M	message]  [-O  [[user@]host:]archive]  [-F  [[user@]host:]archive]
       [--file=[[user@]host:]archive]  [--format=format]  [--message=message]  [--null]  [--reset-access-time]	[--verbose]   [--dot]	[--append]
       [--block-size=blocks]  [--dereference] [--io-size=bytes] [--quiet] [--force-local] [--rsh-command=command] [--help] [--version] < name-list
       [> archive]

       cpio {-i|--extract} [-bcdfmnrtsuvBSV] [-C bytes] [-E file] [-H format] [-M message] [-R [user][:.][group]] [-I  [[user@]host:]archive]  [-F
       [[user@]host:]archive]  [--file=[[user@]host:]archive]  [--make-directories] [--nonmatching] [--preserve-modification-time] [--numeric-uid-
       gid] [--rename] [-t|--list] [--swap-bytes] [--swap] [--dot] [--unconditional] [--verbose] [--block-size=blocks]	[--swap-halfwords]  [--io-
       size=bytes]  [--pattern-file=file]  [--format=format] [--owner=[user][:.][group]] [--no-preserve-owner] [--message=message] [--force-local]
       [--no-absolute-filenames] [--sparse] [--only-verify-crc] [--to-stdout] [--quiet] [--rsh-command=command] [--help] [--version]  [pattern...]
       [< archive]

       cpio {-p|--pass-through} [-0adlmuvLV] [-R [user][:.][group]] [--null] [--reset-access-time] [--make-directories] [--link] [--quiet] [--pre-
       serve-modification-time] [--unconditional] [--verbose] [--dot] [--dereference] [--owner=[user][:.][group]] [--no-preserve-owner] [--sparse]
       [--help] [--version] destination-directory < name-list

DESCRIPTION

       GNU cpio is fully documented in the texinfo documentation. To access the help from your command line, type

       info cpio

       The online copy of the documentation is available at the following address:

       http://www.gnu.org/software/cpio/manual

																	  CPIO(1L)
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