Internal Commands of system 

DIR Directory Commands are given below:
Sl.No.	Command	Function	Usage
1	DIR	By using this command to display files and folders in               particular drive.	DIR press Enter.
2	DIR <Drive>	List all files from the current directory of drive mentioned.	DIR A: Enter> DIR C: Enter>
3	DIR<Drive>/<Directory>	List all files present in the Subdirectory of the drive mentioned.	DIRA:\msoffice <Enter>
4	DIR<*.extension>	Lists all fields with the extension DOC present in the current drive.	DIR*.DOC <Enter>
5	DIR / P	By using this command to display files and directories In the Page.	DIR/P press Enter.
6	DIR/W	To display files and directories in width wise.	DIR/W
7	DIR/ah	To Display the hidden files present in the DIR/ah Directory	DIR/ah
8	DIR / ON	By using this command to display files and Directories in ascending order by name wise.	DIR/ON – Enter
9	DIR / O-N	To display files and directories in descending order By name wise.	DIR / O-N press Enter.
10	DIR / OS	To Display files and directories  lowest size to  Highest size	DIR/ OS press Enter.
11	DIR / O-S	To display files and directories highest size to Lowest size.	DIR /O-S press Enter.
12	DIR/OD	To Display files and directories old data to new data.	DIR/OD press Enter.
13	DIR/O-D	To Display files and directories new data to old data.	DIR/O-D Press Enter.
14	DIR/OG	To Display files and directories in group wise.	DIR/OG press Enter.
15	DIR/O-G	To Display files and directories.	DIR/O-G press Enter.
16	DIR / OE	To Display files and directories in Extension wise.	DIR / OE press Enter
17	DIR/AD	To display only directories.	DIR /AD press Enter.
18	DIR/ A-D	To Display only files.	DIR / A-D press Enter.
19	DIR/ AR	To Display read only files.	DIR/AR press Enter.
20	DIR/AS	To Display only system files.	DIR/AS Press Enter.
21	COPY CON	By using this command you can create files in MS-DOS. Syntax  : copy con filename.extention	EX :- copy con Zameer.txt press (Enter)
22	COPY	To copy 1 file to another file you can use this Command copy source target.	EX: - copy old filename new filename (Harini, Infosys).
23	REN (Rename )	By using this command you can change files or folders names.  Ren old file name new file name.	EX:- Run Sony china (Harini ,Infosys)
24	Delete	By using this command you can delete files in MS-DOS. DEL file name.	Del china (Infosys)
25	MD (make Directory )	By using this command you can create a directory in MS- DOS.	MD Directory name. EX:- CD India.
26	CD ( Change Directory )	To change one directory to another directory. You can use this command.CD, directory name.	EX:- CD India
27	RD (Remove directory )	By using this command you can Remove a Directory in MS-DOS.	RD directory name.  EX:- RD INDIA.
28	NOTE	By using Recommend to delete a directory it must be Empty.	NOTE Enter
29	RD - Drive - Directory name	Used it relive a directory. If you want to remove a directory, first make sure that all the files and sub-directories. Under it are removed.	RD new files – Enter
30	Type - Drive - Directory - File Name.	Displays the contents of a text file. If the file I not a text file, then junk characters will be displayed.	Type my file.tex - Enter.
31	VER - Enter	Displays the Version of Dos	VER - Enter.