Changement de droit sur un fichier unix

Bonjour,

j'ai un fichier unix creer par mon collegue ou il ya sont nom comme commantaire lorsque je veut suprimer le commentaire et je teste
voila le resultar ou il ya le signe "-"


- 1 aymen aymen 53 Wednesday 14 November 2012 at 15:31:06 tata.txt
- 1 aymen aymen 1911 Friday 09 November 2012 at 11:06:09 lsl.c~
- 1 aymen aymen 10697 Friday 09 November 2012 at 12:02:50 tp4.c~
- 1 aymen aymen 9051 Wednesday 14 November 2012 at 18:21:38 struc.c
- 1 aymen aymen 3335 Wednesday 14 November 2012 at 18:21:01 ccp.c
- 1 aymen aymen 950 Wednesday 14 November 2012 at 16:15:57 struc.h
- 1 aymen aymen 7876 Wednesday 14 November 2012 at 18:21:48 struc.o
- 1 aymen aymen 2578 Monday 12 November 2012 at 13:37:13 tp4.h~
- 1 aymen aymen 305 Wednesday 14 November 2012 at 16:17:28 Makefile
d 2 aymen aymen 4096 Wednesday 14 November 2012 at 18:21:48 .
- 1 aymen aymen 62 Monday 12 November 2012 at 14:29:03 fichier.txt~

s'il comment je peut avoir les droit sur le fichier pour a voir cette resultat:

31 tp4.dsc
-rw-r--r-- 1 aymen aymen 1433 Wednesday 24 October 2012 at 23:57:11 source
-rw-rw-r-- 1 aymen aymen 1911 Friday 09 November 2012 at 11:06:09 lsl.c~
-rw-rw-r-- 1 aymen aymen 7680 Monday 12 November 2012 at 14:13:32 tp4.o
-rw-r--r-- 1 aymen aymen 10697 Friday 09 November 2012 at 12:02:50 tp4.c~
-rw-r--r-- 1 aymen aymen 10697 Friday 09 November 2012 at 12:02:50 tp4.c
-rw-r--r-- 1 aymen aymen 4090 Monday 29 October 2012 at 15:18:39 ccp.c
-rw-r--r-- 1 aymen aymen 2578 Monday 12 November 2012 at 13:37:13 tp4.h~
-rw-r--r-- 1 aymen aymen 291 Wednesday 07 November 2012 at 15:10:13 Makefile
-rw-r--r-- 1 aymen aymen 2577 Monday 12 November 2012 at 13:37:13 tp4.h
drwxr-xr-x 2 aymen aymen 4096 Monday 12 November 2012 at 14:30:25 .
-rw-r-xr-x 1 aymen aymen 62 Monday 12 November 2012 at 14:29:03