|CP(1)||General Commands Manual||CP(1)|
cp — copy
In the first synopsis form, the
copies the contents of the source_file to the
target_file. In the second synopsis form, the contents
of each named source_file is copied to the destination
target_directory. The names of the files themselves
are not changed. If
cp detects an attempt to copy a
file to itself, the copy will fail.
The following options are available:
-ioption is ignored if the
-foption is specified.)
-Roption is specified, symbolic links on the command line are followed. (Symbolic links encountered in the tree traversal are not followed.)
cpto write a prompt to the standard error output before copying a file that would overwrite an existing file. If the response from the standard input begins with the character ‘
y’, the file copy is attempted.
-Roption is specified, all symbolic links are followed.
-p, don't copy file flags.
cpto preserve in the copy as many of the modification time, access time, file flags, file mode, user ID, group ID, and extended attributes, as allowed by permissions.
If the user ID and group ID cannot be preserved, no error message is displayed and the exit value is not altered.
If the source file has its set user ID bit on and the user ID cannot be preserved, the set user ID bit is not preserved in the copy's permissions. If the source file has its set group ID bit on and the group ID cannot be preserved, the set group ID bit is not preserved in the copy's permissions. If the source file has both its set user ID and set group ID bits on, and either the user ID or group ID cannot be preserved, neither the set user ID or set group ID bits are preserved in the copy's permissions.
Extended attributes from all accessible namespaces are copied;
others are ignored. If an error occurs during this copy, a message is
cp skips the other extended
attributes for that file.
cpcopies the directory and the entire subtree connected at that point. This option also causes symbolic links to be copied, rather than followed, and for
cpto create special files rather than copying them as normal files. Created directories have the same mode as the corresponding source directory, unmodified by the process's umask.
cp copies hard linked files
as separate files. If you need to preserve hard links, consider using a
utility like pax(1)
cpto be verbose, showing files as they are copied.
For each destination file that already exists, its contents are overwritten if permissions allow, but its mode, user ID, and group ID are unchanged.
In the second synopsis form,
target_directory must exist unless there is only one
named source_file which is a directory and the
-R flag is specified.
If the destination file does not exist, the mode of the source
file is used as modified by the file mode creation mask
csh(1)). If the source file has
its set user ID bit on, that bit is removed unless both the source file and
the destination file are owned by the same user. If the source file has its
set group ID bit on, that bit is removed unless both the source file and the
destination file are in the same group and the user is a member of that
group. If both the set user ID and set group ID bits are set, all of the
above conditions must be fulfilled or both bits are removed.
Appropriate permissions are required for file creation or overwriting.
Symbolic links are always followed unless the
-R flag is set, in which case symbolic links are not
followed, by default. The
-L flags (in conjunction with the
-R flag), as well as the
flag cause symbolic links to be followed as described above. The
-L options are
ignored unless the
-R option is specified. In
addition, these options override each other and the command's actions are
determined by the last one specified. The default is as if the
-P option had been specified.
cp utility exits 0 on success,
and >0 if an error occurs.
Historic versions of the
cp utility had a
-r option. This implementation supports that option,
however, its use is strongly discouraged, as it does not correctly copy
special files, symbolic links or fifo's.
cp utility is expected to be
IEEE Std 1003.2 (“POSIX.2”)
flags are non-standard extensions. They are intended to be compatible with
the same options which other implementations, namely GNU coreutils and
FreeBSD, of this utility have.
-v option is an extension to
IEEE Std 1003.2 (“POSIX.2”).
|March 25, 2012||NetBSD-7.0.1|