$ ls
.               chat.txt        hello.bas       paste.html      
..              chello.asm      hello.exe       pill.php        
0.txt           chello.c        hello.html      playlist.php    
1.txt           chello.exe      hello.obj       rand.txt        
1002.txt        chello.obj      hello.php       save.php        
1007.txt        chello.tmp      hello.txt       save_cal.php    
1008.txt        cmd.php         history.csv     search.php      
1012.txt        cmd.txt         id.txt          takepill.php    
1014.txt        cnt.psh         index.php       temp.php        
ab.txt          config.php      load_cal.php    temp.txt        
ai.html         css.php         load_db.php     temp2.txt       
auth.php        edit.php        love.txt        test.php        
auth_code.php   env.csv         mode.txt        test.txt        
cal             file.csv        movie.php       trash.exe       
cal.csv         file_name.txt   movies.php      vi.php          
cal.php         ginit.asm       music.sql       vi_save.php     
cdebug.txt      ginit.obj       opt.txt         
cdl.psh         hello.asm       output.txt      
$ ls
.               chat.txt        hello.bas       paste.html      
..              chello.asm      hello.exe       pill.php        
0.txt           chello.c        hello.html      playlist.php    
1.txt           chello.exe      hello.obj       rand.txt        
1002.txt        chello.obj      hello.php       save.php        
1007.txt        chello.tmp      hello.txt       save_cal.php    
1008.txt        cmd.php         history.csv     search.php      
1012.txt        cmd.txt         id.txt          takepill.php    
1014.txt        cnt.psh         index.php       temp.php        
ab.txt          config.php      load_cal.php    temp.txt        
ai.html         css.php         load_db.php     temp2.txt       
auth.php        edit.php        love.txt        test.php        
auth_code.php   env.csv         mode.txt        test.txt        
cal             file.csv        movie.php       trash.exe       
cal.csv         file_name.txt   movies.php      vi.php          
cal.php         ginit.asm       music.sql       vi_save.php     
cdebug.txt      ginit.obj       opt.txt         
cdl.psh         hello.asm       output.txt      
