man ln

LN(1)                            User Commands                           LN(1)

NAME
       ln - make links between files

SYNOPSIS
       ln [OPTION]... [-T] TARGET LINK_NAME   (1st form)
       ln [OPTION]... TARGET                  (2nd form)
       ln [OPTION]... TARGET... DIRECTORY     (3rd form)
       ln [OPTION]... -t DIRECTORY TARGET...  (4th form)

DESCRIPTION
       In  the  1st form, create a link to TARGET with the name LINK_NAME.  In
       the 2nd form, create a link to TARGET in the current directory.  In the
       3rd  and  4th  forms, create links to each TARGET in DIRECTORY.  Create
       hard links by default, symbolic links with --symbolic.   When  creating
       hard  links, each TARGET must exist.  Symbolic links can hold arbitrary
       text; if later resolved, a relative link is interpreted in relation  to
       its parent 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

       -d, -F, --directory
              allow the superuser to attempt to hard link  directories  (note:
              will  probably  fail  due  to  system restrictions, even for the
              superuser)

       -f, --force
              remove existing destination files

       -i, --interactive
              prompt whether to remove destinations

       -L, --logical
              make hard links to symbolic link references

       -n, --no-dereference
              treat destination that is a symlink to a directory as if it were
              a normal file

       -P, --physical
              make hard links directly to symbolic links

       -s, --symbolic
              make symbolic links instead of hard links

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

       -t, --target-directory=DIRECTORY
              specify the DIRECTORY in which to create the links

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

       -v, --verbose
              print name of each linked file

       --help display this help and exit

       --version
              output version information and exit

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

       Using -s ignores -L and -P.  Otherwise, the last option specified  con-
       trols behavior when the source is a symbolic link, defaulting to -P.

       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

AUTHOR
       Written by Mike Parker and David MacKenzie.

REPORTING BUGS
       Report ln bugs to [email protected]
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report ln translation bugs to <http://translationproject.org/team/>

COPYRIGHT
       Copyright  ©  2010  Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free  to  change  and  redistribute  it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       link(2), symlink(2)

       The  full  documentation  for ln is maintained as a Texinfo manual.  If
       the info and ln programs are properly installed at your site, the  com-
       mand

              info coreutils 'ln invocation'

       should give you access to the complete manual.

GNU coreutils 8.4                  May 2016                              LN(1)
[oh@localhost 桌面]

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