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-
-
- CLONE(1) CLONE(1)
-
- NAME
- clone - copy files and directories
-
- SYNOPSYS
- clone [ -gux ] [ -b blocksize ] [ -p fileprocs:blockprocs ]
- from ... to
-
- DESCRIPTION
- Clone copies files and directories. Similar in spirit to
- fcp(1) it is a multi-process program which relies on
- pread(2) and pwrite(2) system calls to copy multiple blocks
- in parallel, speeding up the file transfer over high-latency
- links; in contrast to fcp(1) it can copy both single files
- and directories, which may be mixed on the command line.
-
- A single file is copied as expected. If to does not exist,
- it is created; otherwise, an existing file is overwritten;
- if to is a directory, from is copied into it. A single
- directory is copied into to if it exists; otherwise, a new
- directory to is created and the contents of from are copied
- into it. If multiple source files (directories) are given,
- they are copied into the to directory, which is created if
- neccessary.
-
- The -x option sets the mode and modified time of the desti-
- nation file (directory) to that of the source file (direc-
- tory); the -g and -u try to set the group and user id,
- respectively.
-
- The -b option determines the size of a block that will be
- transfered by a single block transfer process (defaults to
- 128k).
-
- The -p option determines the process parallelism configura-
- tion, with fileprocs being the number of processes that han-
- dle simultaneous file transfers, and blockprocs being the
- number of processes that do the input / output (defaults to
- 4:16).
-
- SOURCE
- https://bitbucket.org/k-vik/clone
-
- SEE ALSO
- fcp(1), dircp(1), pread(2), pwrite(2)
-
- BUGS
- Preserving the modification time of directories does not
- work. Attributes are cloned at directory creation time;
- meaning, if there's files to be copied in this directory,
- this will update the parent modification time. Furthermore,
- all directories get the forced write permission, since not
- having one would mean no new file creation.
-