i wish to know what files in operating system of ubuntu 11.04 are required to be set 755 or 644 in (rwx rwx rwx which is eq to 777mode ) in order that internet either mozilla or firefox should work, a terminal should open and restart and shutdown commands should work? for one of my work i wish to have every file of ubunut 11.04 operating system as rwx------ or rw------- i.e. 700 or 600 mode only i.e. they work only from root not from other group or users.
I need each and every file of UBUNTU 11.04 operating system in 700/600/400/100 mode only, ie executed end/R, read/R, Write only by root or Super user except related file(s) are the following.
a. Internet ( Mozilla or firefox or other browsers should work for all users.
b. Terminals should open and work for all users.
c. Restart and shutdown commands should work for all users.
d. CD and DVD open/Read/Write should work for all users
e .Few other commands like bash ( which is a shell interpreter) if made to operate only from root makes system unstable or corrupt.
That means I need to know the file(s) to be listed relating to internet, terminal , restart and shutdown, CD/DVD and some files like bash to be listed under seperate headings.