Linux/Unix Shell Scripting - Comando chown

{salta}/produ/sys/app/indio/shell>ls -ltr

-rw-r--r--    1 indio      cacique          3705 Dec 29 12:43 miru38k

-rwxrwxr-x    1 cacique    cacique          3710 Dec 29 12:44 miru67j

-rw-r--r--    1 indio      cacique          1828 Jan 12 17:08 miru56k

-rwxrwxr-x    1 cacique    cacique          6412 Jan 12 17:15 miru45e

-rwxrwxrwx    1 cacique    cacique          5258 Jan 22 16:07 miru35r

-rwxrwxr-x    1 cacique    cacique         14871 Jan 25 11:27 miru23k

-rwxrwxrwx    1 indio      cacique          4318 Jan 31 11:20 miru12k

-rwxrwxr-x    1 cacique    cacique          4342 Jan 31 11:29 miru91k

-rw-r--r--    1 indio      cacique          5616 Jan 31 11:58 jiru91k

{salta}/produ/sys/app/indio/shell>

{salta}/produ/sys/app/indio/shell>ls -ltr

-rw-r--r--    1 indio      cacique          3705 Dec 29 12:43 miru38k

-rwxrwxr-x    1 indio      cacique          3710 Dec 29 12:44 miru67j

-rw-r--r--    1 indio      cacique          1828 Jan 12 17:08 miru56k

-rwxrwxr-x    1 indio      cacique          6412 Jan 12 17:15 miru45e

-rwxrwxrwx    1 indio      cacique          5258 Jan 22 16:07 miru35r

-rwxrwxr-x    1 indio      cacique         14871 Jan 25 11:27 miru23k

-rwxrwxrwx    1 indio      cacique          4318 Jan 31 11:20 miru12k

-rwxrwxr-x    1 indio      cacique          4342 Jan 31 11:29 miru91k

-rw-r--r--    1 indio      cacique          5616 Jan 31 11:58 jiru91k

{salta}/produ/sys/app/indio/shell>