You're likely thinking of oxygen.
A command that is stored in the system memory and loaded from the command.com
Internal commands are commands that are already loaded in the system, It can be executed at any time and are independent. external commands are loaded when the user requests them. Internal commands don't require a separate process to execute them.
An internal command is an MS-DOS command that is stored in the system memory and loaded from the command.com or cmd.exe.
Rootkit can hijack internal Windows components and often goes undetected because it is already loaded when the antivirus software loads.
to run these command presence of there own files in the disk is not nessecry. When we swich on the computer these commonds are automatically loaded is in run these are called internal command
An internal command is an MS-DOS command that is stored in the system memory and loaded from the command.com or cmd.exe.
Output voltage (...of a transformer, for example...) will decrease as it is loaded because of the transformer's internal resistance. As output current increases/load resistance decreases, a larger voltage will be dropped across the internal transformer resistance. This same phenomenon is present in AC and DC systems (such as batteries).
"IX" refers to the Scout IX-3, The Barrel Break IX-2 and the Scout IX-1. It stands for "internal single fire", which means that these blasters have an internal cocking mechanism because each has to be muzzle loaded.
The trailer loaded
A loaded O file is basically a file that was improperly downloaded. This means while the file was successfully downloaded, it has zero bytes or information. This is usually the case when their is an interruption during the download process.
System Configuration Utility (MSCONFIG)
An internal command is one that is built in to the shell interpreter and is likely to be used quite a bit. An external command is a file in a directory that can be searched, loaded, and executed. The reason for having internal commands is for performance; it takes a lot less time to have the shell just execute the given internal command than it would take to find it on the system, load it into memory, and then execute it.