How to write protect important files

Protect some files from users with sudo access to modify it
How to write protect important file (even root can NOT modify/delete it)

If you have some internal application developed to manage the
users and other stuff. However some admin still some time make changes
/etc/passwd or /etc/master.passwd via sudo. Then the idea of file write
protection comes. I suggested to use them chflags.

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Allowing users to run root programs

When a user starts a command, it runs with the permissions of that
user. What if you want to allow them to run some commands with root
permissions? You can, and that’s called suid.You can set a command to
be suid root with the chmod command. This will make it run as root even
if a user starts it. Here is how to set mybin suid root:

chmod +s mybin

Note that you must be very careful with this option.
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Explore ext2/ext3 filesystem on windows

Explore2fs: This is an explorer like program which can read and interpret the Linux ex2fs/ext3fs filesystem on windows to download this http://uranus.it.swin.edu.au/~jn/linux/ This is to…

Using Reiserfs In Redhat/Fedora

While using redhat/fedora based operating systems,there is no option of installing them on a reiserfs filesystem during the setup. so when you boot from the…