Info Catalog coreutils: test invocation coreutils: Access permission tests

coreutils: File type tests

 
 16.3.1 File type tests
 ----------------------
 
 These options test for particular types of files.  (Everything’s a file,
 but not all files are the same!)
 
 ‘-b FILE’
      True if FILE exists and is a block special device.
 
 ‘-c FILE’
      True if FILE exists and is a character special device.
 
 ‘-d FILE’
      True if FILE exists and is a directory.
 
 ‘-f FILE’
      True if FILE exists and is a regular file.
 
 ‘-h FILE’
 ‘-L FILE’
      True if FILE exists and is a symbolic link.  Unlike all other
      file-related tests, this test does not dereference FILE if it is a
      symbolic link.
 
 ‘-p FILE’
      True if FILE exists and is a named pipe.
 
 ‘-S FILE’
      True if FILE exists and is a socket.
 
 ‘-t FD’
      True if FD is a file descriptor that is associated with a terminal.
 

Info Catalog coreutils: test invocation coreutils: Access permission tests