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cp --help

bash
Usage: cp [OPTION]... [-T] SOURCE DEST
  or:  cp [OPTION]... SOURCE... DIRECTORY
  or:  cp [OPTION]... -t DIRECTORY SOURCE...
Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.

Mandatory arguments to long options are mandatory for short options too.
  -a, --archive                same as -dR --preserve=all
      --attributes-only        don't copy the file data, just the attributes
      --backup[=CONTROL]       make a backup of each existing destination file
  -b                           like --backup but does not accept an argument
      --copy-contents          copy contents of special files when recursive
  -d                           same as --no-dereference --preserve=links
      --debug                  explain how a file is copied.  Implies -v
  -f, --force                  if an existing destination file cannot be
                                 opened, remove it and try again (this option
                                 is ignored when the -n option is also used)
  -i, --interactive            prompt before overwrite (overrides a previous -n
                                  option)
  -H                           follow command-line symbolic links in SOURCE
  -l, --link                   hard link files instead of copying
  -L, --dereference            always follow symbolic links in SOURCE
  -n, --no-clobber             do not overwrite an existing file and do not fail
                                 (overrides a -u or previous -i option). See also
                                 --update; equivalent to --update=none.
  -P, --no-dereference         never follow symbolic links in SOURCE
  -p                           same as --preserve=mode,ownership,timestamps
      --preserve[=ATTR_LIST]   preserve the specified attributes
      --no-preserve=ATTR_LIST  don't preserve the specified attributes
      --parents                use full source file name under DIRECTORY
  -R, -r, --recursive          copy directories recursively
      --reflink[=WHEN]         control clone/CoW copies. See below
      --remove-destination     remove each existing destination file before
                                 attempting to open it (contrast with --force)
      --sparse=WHEN            control creation of sparse files. See below
      --strip-trailing-slashes  remove any trailing slashes from each SOURCE
                                 argument
  -s, --symbolic-link          make symbolic links instead of copying
  -S, --suffix=SUFFIX          override the usual backup suffix
  -t, --target-directory=DIRECTORY  copy all SOURCE arguments into DIRECTORY
  -T, --no-target-directory    treat DEST as a normal file
  --update[=UPDATE]            control which existing files are updated;
                                 UPDATE={all,none,older(default)}.  See below
  -u                           equivalent to --update[=older]
  -v, --verbose                explain what is being done
  -x, --one-file-system        stay on this file system
  -Z                           set SELinux security context of destination
                                 file to default type
      --context[=CTX]          like -Z, or if CTX is specified then set the
                                 SELinux or SMACK security context to CTX
      --help        display this help and exit
      --version     output version information and exit

ATTR_LIST is a comma-separated list of attributes. Attributes are 'mode' for
permissions (including any ACL and xattr permissions), 'ownership' for user
and group, 'timestamps' for file timestamps, 'links' for hard links, 'context'
for security context, 'xattr' for extended attributes, and 'all' for all
attributes.

By default, sparse SOURCE files are detected by a crude heuristic and the
corresponding DEST file is made sparse as well.  That is the behavior
selected by --sparse=auto.  Specify --sparse=always to create a sparse DEST
file whenever the SOURCE file contains a long enough sequence of zero bytes.
Use --sparse=never to inhibit creation of sparse files.

UPDATE controls which existing files in the destination are replaced.
'all' is the default operation when an --update option is not specified,
and results in all existing files in the destination being replaced.
'none' is similar to the --no-clobber option, in that no files in the
destination are replaced, but also skipped files do not induce a failure.
'older' is the default operation when --update is specified, and results
in files being replaced if they're older than the corresponding source file.

When --reflink[=always] is specified, perform a lightweight copy, where the
data blocks are copied only when modified.  If this is not possible the copy
fails, or if --reflink=auto is specified, fall back to a standard copy.
Use --reflink=never to ensure a standard copy is performed.

The backup suffix is '~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.
The version control method may be selected via the --backup option or through
the VERSION_CONTROL environment variable.  Here are the values:

  none, off       never make backups (even if --backup is given)
  numbered, t     make numbered backups
  existing, nil   numbered if numbered backups exist, simple otherwise
  simple, never   always make simple backups

As a special case, cp makes a backup of SOURCE when the force and backup
options are given and SOURCE and DEST are the same name for an existing,
regular file.

man cp

bash
NAME
       cp - copy files and directories

SYNOPSIS
       cp [OPTION]... [-T] SOURCE DEST
       cp [OPTION]... SOURCE... DIRECTORY
       cp [OPTION]... -t DIRECTORY SOURCE...

DESCRIPTION
       Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.

       Mandatory arguments to long options are mandatory for short options too.

       -a, --archive
              same as -dR --preserve=all

       --attributes-only
              don't copy the file data, just the attributes

       --backup[=CONTROL]
              make a backup of each existing destination file

       -b     like --backup but does not accept an argument

       --copy-contents
              copy contents of special files when recursive

       -d     same as --no-dereference --preserve=links

       --debug
              explain how a file is copied.  Implies -v

       -f, --force
              if an existing destination file cannot be opened, remove it and try again
              (this option is ignored when the -n option is also used)

       -i, --interactive
              prompt before overwrite (overrides a previous -n option)

       -H     follow command-line symbolic links in SOURCE

       -l, --link
              hard link files instead of copying

       -L, --dereference
              always follow symbolic links in SOURCE

       -n, --no-clobber
              do not overwrite an existing file and do not fail (overrides a -u or pre‐
              vious -i option). See also --update; equivalent to --update=none.

       -P, --no-dereference
              never follow symbolic links in SOURCE

       -p     same as --preserve=mode,ownership,timestamps

       --preserve[=ATTR_LIST]
              preserve the specified attributes

       --no-preserve=ATTR_LIST
              don't preserve the specified attributes

       --parents
              use full source file name under DIRECTORY

       -R, -r, --recursive
              copy directories recursively

       --reflink[=WHEN]
              control clone/CoW copies. See below

       --remove-destination
              remove  each existing destination file before attempting to open it (con‐
              trast with --force)

       --sparse=WHEN
              control creation of sparse files. See below

       --strip-trailing-slashes
              remove any trailing slashes from each SOURCE argument

       -s, --symbolic-link
              make symbolic links instead of copying

       -S, --suffix=SUFFIX
              override the usual backup suffix

       -t, --target-directory=DIRECTORY
              copy all SOURCE arguments into DIRECTORY

       -T, --no-target-directory
              treat DEST as a normal file

       --update[=UPDATE]
              control which  existing  files  are  updated;  UPDATE={all,none,older(de‐
              fault)}.  See below

       -u     equivalent to --update[=older]

       -v, --verbose
              explain what is being done

       -x, --one-file-system
              stay on this file system

       -Z     set SELinux security context of destination file to default type

       --context[=CTX]
              like  -Z,  or  if CTX is specified then set the SELinux or SMACK security
              context to CTX

       --help display this help and exit

       --version
              output version information and exit

       ATTR_LIST is a comma-separated list of attributes.  Attributes  are  'mode'  for
       permissions  (including any ACL and xattr permissions), 'ownership' for user and
       group, 'timestamps' for file timestamps, 'links' for hard links,  'context'  for
       security context, 'xattr' for extended attributes, and 'all' for all attributes.

       By default, sparse SOURCE files are detected by a crude heuristic and the corre‐
       sponding  DEST  file  is  made sparse as well.  That is the behavior selected by
       --sparse=auto.  Specify --sparse=always to create a sparse  DEST  file  whenever
       the   SOURCE   file  contains  a  long  enough  sequence  of  zero  bytes.   Use
       --sparse=never to inhibit creation of sparse files.

       UPDATE controls which existing files in the destination are replaced.  'all'  is
       the  default  operation when an --update option is not specified, and results in
       all existing files in the destination being replaced.  'none' is similar to  the
       --no-clobber  option, in that no files in the destination are replaced, but also
       skipped files do not induce a failure.  'older' is the  default  operation  when
       --update is specified, and results in files being replaced if they're older than
       the corresponding source file.

       When --reflink[=always] is specified, perform a lightweight copy, where the data
       blocks  are  copied only when modified.  If this is not possible the copy fails,
       or if --reflink=auto is specified, fall back to  a  standard  copy.   Use  --re‐
       flink=never to ensure a standard copy is performed.

       The backup suffix is '~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.  The
       version  control  method  may be selected via the --backup option or through the
       VERSION_CONTROL environment variable.  Here are the values:

       none, off
              never make backups (even if --backup is given)

       numbered, t
              make numbered backups

       existing, nil
              numbered if numbered backups exist, simple otherwise

       simple, never
              always make simple backups

       As a special case, cp makes a backup of SOURCE when the force and backup options
       are given and SOURCE and DEST are the same name for an existing, regular file.

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