2000-09-04 11:30:07 +04:00
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.\" $NetBSD: cp.1,v 1.16 2000/09/04 07:30:08 kleink Exp $
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1995-03-21 12:01:59 +03:00
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.\"
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1994-09-22 13:24:35 +04:00
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.\" Copyright (c) 1989, 1990, 1993, 1994
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.\" The Regents of the University of California. All rights reserved.
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1993-03-21 12:45:37 +03:00
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Institute of Electrical and Electronics Engineers, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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1995-03-21 12:01:59 +03:00
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.\" @(#)cp.1 8.3 (Berkeley) 4/18/94
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1993-03-22 11:04:00 +03:00
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.\"
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1994-09-22 13:24:35 +04:00
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.Dd April 18, 1994
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1993-03-21 12:45:37 +03:00
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.Dt CP 1
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1999-03-22 21:25:43 +03:00
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.Os
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1993-03-21 12:45:37 +03:00
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.Sh NAME
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.Nm cp
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.Nd copy files
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.Sh SYNOPSIS
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1997-09-14 11:15:25 +04:00
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.Nm
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1994-09-22 13:24:35 +04:00
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.Oo
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.Fl R
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.Op Fl H | Fl L | Fl P
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.Oc
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Fix bug where "cp -f" didn't work.
It's suppsed to remove the file and then copy, which it wasn't doing.
But no wait, it turns out that the described behaviour in the manual doesn't
agree with POSIX. So we change the above fix and the manual to "try copy, and
if fail, try remove, then copy".
Fix bug where "cp -R" didn't work on read-only directories:
It would make the directory, set the mode, and not be able to write files into it.
Don't bother mmap()ing files of zero length. Was a workaround for a bug in Rhapsody
mmap(), which didn't get along with such files, but makes sense anyway.
Fix race condition where "cp -p" would set the mod time of a file before close()ing
the file, which would update the mod time and therefore screw up the "-p" idea,
except, of course, while running in gdb, which sucked.
Add -f option to usage message in binary and man page. Already documented in man page.
1998-10-08 21:43:24 +04:00
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.Op Fl f | i
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.Op Fl p
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1993-03-21 12:45:37 +03:00
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.Ar source_file target_file
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Fix bug where "cp -f" didn't work.
It's suppsed to remove the file and then copy, which it wasn't doing.
But no wait, it turns out that the described behaviour in the manual doesn't
agree with POSIX. So we change the above fix and the manual to "try copy, and
if fail, try remove, then copy".
Fix bug where "cp -R" didn't work on read-only directories:
It would make the directory, set the mode, and not be able to write files into it.
Don't bother mmap()ing files of zero length. Was a workaround for a bug in Rhapsody
mmap(), which didn't get along with such files, but makes sense anyway.
Fix race condition where "cp -p" would set the mod time of a file before close()ing
the file, which would update the mod time and therefore screw up the "-p" idea,
except, of course, while running in gdb, which sucked.
Add -f option to usage message in binary and man page. Already documented in man page.
1998-10-08 21:43:24 +04:00
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.Nm cp
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1994-09-22 13:24:35 +04:00
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.Oo
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.Fl R
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.Op Fl H | Fl L | Fl P
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.Oc
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Fix bug where "cp -f" didn't work.
It's suppsed to remove the file and then copy, which it wasn't doing.
But no wait, it turns out that the described behaviour in the manual doesn't
agree with POSIX. So we change the above fix and the manual to "try copy, and
if fail, try remove, then copy".
Fix bug where "cp -R" didn't work on read-only directories:
It would make the directory, set the mode, and not be able to write files into it.
Don't bother mmap()ing files of zero length. Was a workaround for a bug in Rhapsody
mmap(), which didn't get along with such files, but makes sense anyway.
Fix race condition where "cp -p" would set the mod time of a file before close()ing
the file, which would update the mod time and therefore screw up the "-p" idea,
except, of course, while running in gdb, which sucked.
Add -f option to usage message in binary and man page. Already documented in man page.
1998-10-08 21:43:24 +04:00
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.Op Fl f | i
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.Op Fl p
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1993-03-21 12:45:37 +03:00
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.Ar source_file ... target_directory
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.Sh DESCRIPTION
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In the first synopsis form, the
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1997-09-14 11:15:25 +04:00
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.Nm
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1993-03-21 12:45:37 +03:00
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utility copies the contents of the
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.Ar source_file
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to the
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.Ar target_file .
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In the second synopsis form,
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the contents of each named
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.Ar source_file
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is copied to the destination
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.Ar target_directory .
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The names of the files themselves are not changed.
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If
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1997-09-14 11:15:25 +04:00
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.Nm
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1993-03-21 12:45:37 +03:00
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detects an attempt to copy a file to itself, the copy will fail.
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.Pp
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The following options are available:
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.Bl -tag -width flag
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1994-09-22 13:24:35 +04:00
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.It Fl H
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If the
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.Fl R
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option is specified, symbolic links on the command line are followed.
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(Symbolic links encountered in the tree traversal are not followed.)
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.It Fl L
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If the
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.Fl R
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option is specified, all symbolic links are followed.
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.It Fl P
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If the
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.Fl R
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option is specified, no symbolic links are followed.
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1993-03-21 12:45:37 +03:00
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.It Fl R
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If
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.Ar source_file
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designates a directory,
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1997-09-14 11:15:25 +04:00
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.Nm
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1993-03-21 12:45:37 +03:00
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copies the directory and the entire subtree connected at that point.
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This option also causes symbolic links to be copied, rather than
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indirected through, and for
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1997-09-14 11:15:25 +04:00
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.Nm
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1993-03-21 12:45:37 +03:00
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to create special files rather than copying them as normal files.
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Created directories have the same mode as the corresponding source
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directory, unmodified by the process' umask.
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.It Fl f
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Fix bug where "cp -f" didn't work.
It's suppsed to remove the file and then copy, which it wasn't doing.
But no wait, it turns out that the described behaviour in the manual doesn't
agree with POSIX. So we change the above fix and the manual to "try copy, and
if fail, try remove, then copy".
Fix bug where "cp -R" didn't work on read-only directories:
It would make the directory, set the mode, and not be able to write files into it.
Don't bother mmap()ing files of zero length. Was a workaround for a bug in Rhapsody
mmap(), which didn't get along with such files, but makes sense anyway.
Fix race condition where "cp -p" would set the mod time of a file before close()ing
the file, which would update the mod time and therefore screw up the "-p" idea,
except, of course, while running in gdb, which sucked.
Add -f option to usage message in binary and man page. Already documented in man page.
1998-10-08 21:43:24 +04:00
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Foreach existing destination pathname, attempt to overwrite it. If permissions
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do not allow copy to succeed, remove it and create a new file, without
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prompting for confirmation.
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1993-03-21 12:45:37 +03:00
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(The
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.Fl i
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option is ignored if the
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.Fl f
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option is specified.)
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.It Fl i
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Causes
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1997-09-14 11:15:25 +04:00
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.Nm
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1994-09-22 13:24:35 +04:00
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to write a prompt to the standard error output before copying a file
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that would overwrite an existing file.
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1993-03-21 12:45:37 +03:00
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If the response from the standard input begins with the character
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.Sq Li y ,
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1994-09-22 13:24:35 +04:00
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the file copy is attempted.
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1993-03-21 12:45:37 +03:00
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.It Fl p
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Causes
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1997-09-14 11:15:25 +04:00
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.Nm
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1993-03-21 12:45:37 +03:00
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to preserve in the copy as many of the modification time, access time,
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1994-09-22 13:24:35 +04:00
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file flags, file mode, user ID, and group ID as allowed by permissions.
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1993-03-21 12:45:37 +03:00
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.Pp
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If the user ID and group ID cannot be preserved, no error message
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is displayed and the exit value is not altered.
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.Pp
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If the source file has its set user ID bit on and the user ID cannot
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be preserved, the set user ID bit is not preserved
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in the copy's permissions.
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If the source file has its set group ID bit on and the group ID cannot
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be preserved, the set group ID bit is not preserved
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in the copy's permissions.
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1994-09-22 13:24:35 +04:00
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If the source file has both its set user ID and set group ID bits on,
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and either the user ID or group ID cannot be preserved, neither
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1993-03-21 12:45:37 +03:00
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the set user ID or set group ID bits are preserved in the copy's
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permissions.
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.El
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.Pp
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For each destination file that already exists, its contents are
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overwritten if permissions allow, but its mode, user ID, and group
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ID are unchanged.
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.Pp
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1994-09-22 13:24:35 +04:00
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In the second synopsis form,
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.Ar target_directory
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must exist unless there is only one named
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.Ar source_file
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which is a directory and the
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.Fl R
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flag is specified.
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.Pp
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1993-03-21 12:45:37 +03:00
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If the destination file does not exist, the mode of the source file is
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used as modified by the file mode creation mask
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.Pf ( Ic umask ,
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see
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.Xr csh 1 ) .
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If the source file has its set user ID bit on, that bit is removed
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unless both the source file and the destination file are owned by the
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same user.
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If the source file has its set group ID bit on, that bit is removed
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unless both the source file and the destination file are in the same
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group and the user is a member of that group.
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If both the set user ID and set group ID bits are set, all of the above
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conditions must be fulfilled or both bits are removed.
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.Pp
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Appropriate permissions are required for file creation or overwriting.
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.Pp
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1994-09-22 13:24:35 +04:00
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Symbolic links are always followed unless the
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.Fl R
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flag is set, in which case symbolic links are not followed, by default.
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The
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.Fl H
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or
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.Fl L
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flags (in conjunction with the
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1993-03-21 12:45:37 +03:00
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.Fl R
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1994-09-22 13:24:35 +04:00
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flag) cause symbolic links to be followed as described above.
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The
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.Fl H ,
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.Fl L
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and
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.Fl P
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options are ignored unless the
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.Fl R
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option is specified.
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In addition, these options override each other and the
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command's actions are determined by the last one specified.
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1993-03-21 12:45:37 +03:00
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.Pp
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2000-09-04 11:30:07 +04:00
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.Sh EXIT STATUS
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1997-09-14 11:15:25 +04:00
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.Nm
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2000-09-04 11:30:07 +04:00
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exits 0 on success, and >0 if an error occurred.
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1994-09-22 13:24:35 +04:00
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.Sh COMPATIBILITY
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Historic versions of the
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1997-09-14 11:15:25 +04:00
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.Nm
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1994-09-22 13:24:35 +04:00
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utility had a
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.Fl r
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option.
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This implementation supports that option, however, its use is strongly
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discouraged, as it does not correctly copy special files, symbolic links
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or fifo's.
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1993-03-21 12:45:37 +03:00
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.Sh SEE ALSO
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.Xr mv 1 ,
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.Xr rcp 1 ,
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1994-09-22 13:24:35 +04:00
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.Xr umask 2 ,
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.Xr fts 3 ,
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.Xr symlink 7
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1995-07-25 22:34:15 +04:00
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.Sh STANDARDS
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1993-03-21 12:45:37 +03:00
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The
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1997-09-14 11:15:25 +04:00
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.Nm
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1995-07-25 23:36:36 +04:00
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utility is expected to be
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1993-03-21 12:45:37 +03:00
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.St -p1003.2
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compatible.
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