Info: (coreutils) realpath invocation

coreutils: realpath invocation

 
 18.5 ‘realpath’: Print the resolved file name.
 ==============================================
 
 ‘realpath’ expands all symbolic links and resolves references to ‘/./’,
 ‘/../’ and extra ‘/’ characters.  By default, all but the last component
 of the specified files must exist.  Synopsis:
 
      realpath [OPTION]... FILE...
 
    The file name canonicalization functionality overlaps with that of
 the ‘readlink’ command.  This is the preferred command for
 canonicalization as it’s a more suitable and standard name.  In addition
 this command supports relative file name processing functionality.
 
    The program accepts the following options.  Also see ⇒Common
 options.
 
 ‘-e’
 ‘--canonicalize-existing’
      Ensure that all components of the specified file names exist.  If
      any component is missing or unavailable, ‘realpath’ will output a
      diagnostic unless the ‘-q’ option is specified, and exit with a
      nonzero exit code.  A trailing slash requires that the name resolve
      to a directory.
 
 ‘-m’
 ‘--canonicalize-missing’
      If any component of a specified file name is missing or
      unavailable, treat it as a directory.
 
 ‘-L’
 ‘--logical’
      Symbolic links are resolved in the specified file names, but they
      are resolved after any subsequent ‘..’ components are processed.
 
 ‘-P’
 ‘--physical’
      Symbolic links are resolved in the specified file names, and they
      are resolved before any subsequent ‘..’ components are processed.
      This is the default mode of operation.
 
 ‘-q’
 ‘--quiet’
      Suppress diagnostic messages for specified file names.
 
 ‘--relative-to=DIR’
      Print the resolved file names relative to the specified directory.
      Note this option honors the ‘-m’ and ‘-e’ options pertaining to
      file existence.
 
 ‘--relative-base=DIR’
      Print the resolved file names as relative _if_ the files are
      descendants of DIR.  Otherwise, print the resolved file names as
      absolute.  Note this option honors the ‘-m’ and ‘-e’ options
      pertaining to file existence.  For details about combining
      ‘--relative-to’ and ‘--relative-base’, ⇒Realpath usage
      examples.
 
 ‘-s’
 ‘--strip’
 ‘--no-symlinks’
      Do not resolve symbolic links.  Only resolve references to ‘/./’,
      ‘/../’ and remove extra ‘/’ characters.  When combined with the
      ‘-m’ option, realpath operates only on the file name, and does not
      touch any actual file.
 
 ‘-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.
 
    Exit status:
 
      0 if all file names were printed without issue.
      1 otherwise.
coreutils: realpath invocation

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