- -nt
- -ot
- -ef
File comparision tests
[ file1 -nt file1 ] file1 is newer than file2 [ file1 -ot file2 ] file1 is older than file2 [ file1 -ef file2 ] file1 and file2 point to the same file (e.g. symbolic link)
[ file1 -nt file1 ] file1 is newer than file2 [ file1 -ot file2 ] file1 is older than file2 [ file1 -ef file2 ] file1 and file2 point to the same file (e.g. symbolic link)