mv --help

Usage: mv [OPTION]... [-T] SOURCE DEST
  or:  mv [OPTION]... SOURCE... DIRECTORY
  or:  mv [OPTION]... -t DIRECTORY SOURCE...
Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.

Mandatory arguments to long options are mandatory for short options too.
      --backup[=CONTROL]       make a backup of each existing destination file
  -b                           like --backup but does not accept an argument
      --debug                  explain how a file is copied.  Implies -v
  -f, --force                  do not prompt before overwriting
  -i, --interactive            prompt before overwrite
  -n, --no-clobber             do not overwrite an existing file
If you specify more than one of -i, -f, -n, only the final one takes effect.
      --no-copy                do not copy if renaming fails
      --strip-trailing-slashes  remove any trailing slashes from each SOURCE
                                 argument
  -S, --suffix=SUFFIX          override the usual backup suffix
  -t, --target-directory=DIRECTORY  move 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
  -Z, --context                set SELinux security context of destination
                                 file to default type
      --help        display this help and exit
      --version     output version information and exit

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.

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

man mv

NAME
       mv - move (rename) files

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

DESCRIPTION
       Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.

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

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

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

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

       -f, --force
              do not prompt before overwriting

       -i, --interactive
              prompt before overwrite

       -n, --no-clobber
              do not overwrite an existing file

       If you specify more than one of -i, -f, -n, only the final one takes effect.

       --no-copy
              do not copy if renaming fails

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

       -S, --suffix=SUFFIX
              override the usual backup suffix
              
       -t, --target-directory=DIRECTORY
              move 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

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

       --help display this help and exit

       --version
              output version information and exit

       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.

       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