Info Catalog coreutils: mknod invocation coreutils: Special file types coreutils: rmdir invocation

coreutils: readlink invocation

 
 12.6 ‘readlink’: Print value of a symlink or canonical file name
 ================================================================
 
 ‘readlink’ may work in one of two supported modes:
 
 ‘Readlink mode’
 
      ‘readlink’ outputs the value of the given symbolic links.  If
      ‘readlink’ is invoked with an argument other than the name of a
      symbolic link, it produces no output and exits with a nonzero exit
      code.
 
 ‘Canonicalize mode’
 
      ‘readlink’ outputs the absolute name of the given files which
      contain no ‘.’, ‘..’ components nor any repeated separators (‘/’)
      or symbolic links.  Note the ‘realpath’ command is the preferred
      command to use for canonicalization.  ⇒realpath invocation.
 
      readlink [OPTION]... FILE...
 
    By default, ‘readlink’ operates in readlink mode.
 
    The program accepts the following options.  Also see ⇒Common
 options.
 
 ‘-f’
 ‘--canonicalize’
      Activate canonicalize mode.  If any component of the file name
      except the last one is missing or unavailable, ‘readlink’ produces
      no output and exits with a nonzero exit code.  A trailing slash is
      ignored.
 
 ‘-e’
 ‘--canonicalize-existing’
      Activate canonicalize mode.  If any component is missing or
      unavailable, ‘readlink’ produces no output and exits with a nonzero
      exit code.  A trailing slash requires that the name resolve to a
      directory.
 
 ‘-m’
 ‘--canonicalize-missing’
      Activate canonicalize mode.  If any component is missing or
      unavailable, ‘readlink’ treats it as a directory.
 
 ‘-n’
 ‘--no-newline’
      Do not print the output delimiter, when a single FILE is specified.
      Print a warning if specified along with multiple FILEs.
 
 ‘-s’
 ‘-q’
 ‘--silent’
 ‘--quiet’
      Suppress most error messages.  On by default.
 
 ‘-v’
 ‘--verbose’
      Report error messages.
 
 ‘-z’
 ‘--zero’
      Output a zero byte (ASCII NUL) at the end of each line, rather than
      a newline.  This option enables other programs to parse the output
      even when that output would contain data with embedded newlines.
 
    The ‘readlink’ utility first appeared in OpenBSD 2.1.
 
    The ‘realpath’ command without options, operates like ‘readlink’ in
 canonicalize mode.
 
    An exit status of zero indicates success, and a nonzero value
 indicates failure.
 

Info Catalog coreutils: mknod invocation coreutils: Special file types coreutils: rmdir invocation