Info Catalog coreutils: Access permission tests coreutils: test invocation coreutils: String tests

coreutils: File characteristic tests

 
 16.3.3 File characteristic tests
 --------------------------------
 
 These options test other file characteristics.
 
 ‘-e FILE’
      True if FILE exists.
 
 ‘-s FILE’
      True if FILE exists and has a size greater than zero.
 
 ‘FILE1 -nt FILE2’
      True if FILE1 is newer (according to modification date) than FILE2,
      or if FILE1 exists and FILE2 does not.
 
 ‘FILE1 -ot FILE2’
      True if FILE1 is older (according to modification date) than FILE2,
      or if FILE2 exists and FILE1 does not.
 
 ‘FILE1 -ef FILE2’
      True if FILE1 and FILE2 have the same device and inode numbers,
      i.e., if they are hard links to each other.
 
 ‘-N FILE’
      True if FILE exists and has been modified (mtime) since it was last
      read (atime).
 

Info Catalog coreutils: Access permission tests coreutils: test invocation coreutils: String tests