CP(1)CP(1)NAME
cp, mv, rm, ln, cpdir, clone - copy, move, remove, link
SYNOPSIS
cp [-pifsmrRvx] file1 file2
cp [-pifsrRvx] file ... dir
mv [-ifsmvx] file1 file2
mv [-ifsvx] file ... dir
rm [-ifrRvx] file ...
ln [-ifsSmrRvx] file1 file2
ln [-ifsSrRvx] file ... dir
cpdir [-ifvx] file1 file2
clone [-ifsSvx] file1 file2
DESCRIPTION
The utilities cp, mv, rm, and ln do basic file management: copying,
renaming or moving, deletion, and creating links. (The cpdir and clone
utilities are easy to use aliases for copying or linking whole trees.
They are the same as cp -psmr and ln -fmr)
The first synopsis form of the utilities cp, mv, and ln is used if only
two arguments are given, and the second argument is not a directory.
The source and target file are then the two files given.
If the second synopsis form is used then the last argument must be a
directory. Each of the files is copied, moved or linked into this
directory.
A file is by default copied by cp without looking at its type, so sym‐
links are followed and devices are opened and read from or written to.
Links between files are ignored. This behavior can be changed by using
the proper options.
The mv utility uses the rename(2) call to rename or move files. If
source and target are on different devices however, then mv will use cp
-pr to copy the files or directory trees.
Each utility continues with the next file on errors, except on I/O
errors.
OPTIONS-p Copy the file attributes like mode, owner, group and time of
last modification. Normally only the mode is copied to a new
file with the file creation mask applied. Setuid bits are
cleared if setting the ownership fails.
-i Ask if ok to overwrite, replace or remove. Mv and rm will ask
this automatically if interactive and the target file is
writable. Cp will fail if the target cannot be written, ln will
always fail if the target exists.
-f Makes cp remove a target file before copying if it is not
writable, mv removes an existing target without asking, rm does
not report any errors, and ln removes an existing target file
before linking. The last of -i and -f wins for mv if both flags
are set, the other utilities do something sensible, like asking
before forcefully removing.
-s Make a symlink instead of a normal link. For utilities other
than ln this flag means "copy similar". The modified time is
always copied for cp -s and the other attributes are copied if a
new file is created. The normal POSIX required patronizing like
applying the file creation mask or clearing setuid bits is not
done.
-S Make a symlink if a normal link cannot be made because source
and target are on different devices. The symlink is required to
really refer back to the source, meaning that a/b must exist in
the call ln -S a/b c/d, and that the symlink from c/d must lead
back to a/b. So the symlink will be created as if ln -s ../a/b
c/d was called. If the target is a full path, but the source is
not then an error will be given saying that this is "too diffi‐
cult."
-m Merge trees. The first synopsis form is assumed, and the files
from one tree are merged into the other. There is no "if it's a
directory the put it into that directory" trickery here.
-r, -R Recursively copy, remove, or link. If the source is a directory
then the files in this directory are copied to similarly named
files in the target directory. Special files are copied as new
special files, they are not read or written. Symlinks are still
expanded and the link structure ignored with -R. The -r flag
does copy symlinks as symlinks and keeps the link structure
intact. (Note that -R is invented by POSIX as a replacement for
the classic -r option of older copy commands that did read spe‐
cial files. The standard says that -r is implementation
defined, so that's why this flag is better than -R in this
implementation of cp.) For rm and ln both flags mean the same.
Ln will recursively link the files in the trees, except sym‐
links, they are copied. If symlinks are created with ln -rs or
ln -rS then they are required "to work" as described with the -S
flag.
-v Verbose. Show what is done on standard output.
-x Do not cross mount points. Empty directories will be created if
the source directory is a mount point on a copy, move or link.
A mount point will not be removed or traversed recursively.
This flag allows one to copy the root device, e.g. cpdir -x /
/mnt.
SEE ALSOcat(1), mkdir(1), rmdir(1), mkdir(2), rmdir(2), link(2), unlink(2),
rename(2), open(2), read(2), write(2), opendir(3).
NOTES
All the utilities described are links to the same program.
BUGS
Mv should first copy a tree across devices and then remove the source
tree if there was no error. Instead, each file in the tree is copied
and immediately removed. On error you may be left with two half-filled
trees, together containing all of the files. You may have to restart
the move with mv-m.
Rm should be able to remove arbitrarily deep trees.
AUTHOR
Kees J. Bot (kjb@cs.vu.nl)
CP(1)
