Equivalente de tail/less --follow-name en OS X

Question

Necesitocola -fun archivo de registro que se rota.

Este es elexactoEl mismo problema que el de aquí, pero en OS X:

¿Por qué deja de funcionar el modo menos cola?

Entonces, ¿cómo puedo rastrear constantemente un archivo cuyo inodo podría cambiar en OS X?

Answer 1

Desde Ubuntu Lucid (coreutils 7.4)

   -f, --follow[={name|descriptor}]
          output appended data as the file grows; -f, --follow, and --follow=descriptor are equivalent

   With --follow (-f), tail defaults to following the file descriptor, which means that even if a tail'ed file is renamed, tail will continue to track its end.  This default behavior is not desirable when  you  really  want  to
   track  the  actual  name  of  the  file, not the file descriptor (e.g., log rotation).  Use --follow=name in that case.  That causes tail to track the named file by reopening it periodically to see if it has been removed and
   recreated by some other program

Desde Mac OS X 10.6 (10A432)

 -f      The -f option causes tail to not stop when end of file is
         reached, but rather to wait for additional data to be appended to
         the input.  The -f option is ignored if the standard input is a
         pipe, but not if it is a FIFO.

 -F      The -F option implies the -f option, but tail will also check to
         see if the file being followed has been renamed or rotated.  The
         file is closed and reopened when tail detects that the filename
         being read from has a new inode number.  The -F option is ignored
         if reading from standard input rather than a file.

Suponiendo que quieras el --follow=/tmp/algo.txtcomportamiento en Linux, eso significaría que en Mac lo que quieres es:

tail -F /tmp/somefile.txt

Editar: Recién probado en Mac OSX (Snow Leopard) y-Fsolo abrirá el nombre de archivo que ingresó y NO seguirá el inodo/descriptor de archivo del archivo que abrió cuando se movió.