Directory utili

/etc/issue  contains a message or system identification to be printed before the login prompt.

/etc/profile  controls system-wide default variables, such as Export variables, File creation mask (umask), Terminal types, Mail messages to indicate when new mail has arrived

/proc/version  specifies the version of the Linux kernel

/etc/passwd  has all registered user that has access to a system

/etc/shadow  contains information about the system's users' passwords

/root/.bash_history  contains the history commands for root, user

/var/log/dmessage  contains global system messages, including the messages that are logged during system startup

/var/mail/root  all emails for root user

/root/.ssh/id_rsa  Private SSH keys for a root or any known valid user on the server

/var/log/apache2/access.log  the accessed requests for Apache  webserver

C:\boot.ini  contains the boot options for computers with BIOS firmware