This fdisk command will allow you to recreate the Master Boot Record or MBR on systems running WIndows prior to XP. Although this can be dangerous, it is a quick way to fix many boot issues.
Many malicious attacks begin with a ping scan. Disabling ICMP echo requests prevents your system’s discovery with a ping.
Using the tail command with an option, the file will remain open and you will see any additional output written to the file. This is especially useful for watching log files.
Instructions for manually registering a dll or ocx file on a Windows system.
This command will show information such as the registered owner, product ID, install date, memory, domain name, server, and installed hotfix patches. The systeminfo command is found in xp, vista, and windows 7 installations.
This command will safely turn off a Solaris system using the init command.
Using the find command, this locates all files with zero length.
The find command searches all subdirectories under the specified path by default. Using the maxdepth option, the search depth can be limited.
Using the find command, one can locate files that are owned by a uid that no longer exists.
Errors in the /etc/passwd file can cause many problems including the inability to login as root. The pwck command is a quick way to test the file and should be run whenever you make manual edits.
UNIX systems store user group information in the /etc/group file. Errors in this file can cause a variety of problems.
Virtual interfaces allow a single ethernet interface to listen on additional IP addresses.
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