/bin/login: Permission denied

[Ramnath Muthukumar <ramuatavon yahoo co in>]

hi guys

i ve a Red hat linux 7 

i am facing a problem in loggin in to my system

it shows the login prompt to enter user id 
when i enter the user id and enter it refreshes and again
asks for the user id


so i tried booting as a single user mode and checked for the 

/bin/login command.. it read 0 bytes 

so i tryed to replace that login file with another file.. but i could
nt able to read or write r remove that file.. 
when i tried

rm -f /bin/login (as root in single user mode)
it gives like this

rm: cannot unlink 'login': Operation not permitted


so i could int able to edit  or delete or move that file.


pls give me a solution for my problem


regards
ramnath muthukumar





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