1. For airtime recharge, the new code is *311* Voucher PIN #
2. To check MTN airtime balance, the new code is *310#
3. To borrow airtime, dial *303#
4. To buy data, dial *312#
5. To share data, dial *321#
6. To check your data balance, dial *323#
7. For MTN Value-added Services, dial *305#
8. To link your NIN to your MTN line, dial *996#
9. To check your MTN phone number, *123*1*1#
10. To change transfer pin, *321*Default PIN*New PIN*New PIN# where 0000 is the default pin
11. To check your NIN — *996#
12. To check VAS — *305#
13. To Share services — *321#

1. CREATE FOLDER
md C:UsersDellDesktopAliyu // It create single folder on desktop called Aliyu
md C:UsersDellDesktopAliyumusaisasani // it create sani folder in isa in musa in Aliyu
C:>md Ali sani adam // make multiple folders at once called Ali, sani and adam in C: you have to navigate to where you want to create the folders
2. RENAME FOLDER
ren C:UsersDellDesktopAliyusaleh Anas // it renaem saleh to Anas
3. OPEN FOLDER
start C:UsersDellDesktopAliyuAnas // it opens subfolder Anas
4. CLOSE FOLDER
taskkill /f /im explorer.exe // this closes all folders then run
start explorer.exe
5. DELETE FOLDER
rd C:UsersDellDesktopAliyuAnas // delete an empty folder called Anas
rd /s C:UsersDellDesktopAliyuAnas // delete folder called Anas with sub files and folders in it, it request permission
rd /s /q C:UsersDellDesktopAliyuAnas // delete folder called Anas with sub files and folders in it, it request permission
6. COPY FILES OF A FOLDER
copy C:UsersDellDesktopAliyuAnas C:Annas // copy files of a folder from Anas folder to Annas folder in C: without if folders
Xcopy /E C:UsersDellDesktopAliyuAnas C:Annas // copy all folder contents from Anas folder to Annas folder in C: without if folders, but ask for permission
Xcopy /E /Q C:UsersDellDesktopAliyuAnas C:Annas // copy all folder contents from Anas folder to Annas folder in C: without if folders, without asking for permission
7. MOVE FOLDER
move C:UsersDellDesktopAliyuAnas C:Annas // move all Anas contents to Annas folder in C:
8. HIDE FOLDER
C:>attrib +h /s /d annas // hide annas folder in c:
9. UNHIDE FOLDER
C:>attrib +h /s /d annas // unhide annas folder in c:

1. Checking the presence of NIC = netsh wlan show interface
2. Checking NIC drive = netsh wlan show drivers
3. Checking the functionality of the NIC = ping 172.0.0.1
4. Assigning this IP address 192.168.0.2 with this gateway 192.168.0.1 = netsh interface ip set address name="wireless network connection 3" static 192.168.0.1 255.255.255.255 192.168.0.2
5. Removing IP address = netsh interface ip set address name="wireless network connec
tion 3" DHCP
1. View my IP address = ipconfig /all OR netsh interface ipv4 show addresses
2. Verifying connection to this IP address 192.168.0.5 = ping 192.168.0.5
3. Viewing the connected computers = net view
4. Viewing the IP address of all the connected computers = arp -a
5. Set the system to obtain it IP address automatically = netsh interface ip set address name="wireless network connection 3" DHCP
6. Turn on network discovery= netsh advfirewall firewall set rule group="network discovery" new enable=yes
7. Turn off network discovery= netsh advfirewall firewall set rule group="network discovery" new enable=no
8. Turn on file sharing= netsh advfirewall firewall set rule group="file and printer sharing" new enable=yes
9. Turn off file sharing= netsh advfirewall firewall set rule group="file and printer sharing" new enable=no
10. Viewing the available network profile = netsh wlan show profile
11. Viewing the password of a specific network profile = netsh wlan show profile name=AHMADNET key=clear
12. Starting a network profile = netsh wlan connect AHMADNET
13. Stopping a network profile = netsh wlan disconnect interface="wireless network connection 3”
14. Deleting a network profile = netsh wlan delete profile name=AHMADNET
15. Deleting all the available network profile = netsh wlan delete profile name=*
16. Creating a hosted network = netsh wlan set hostednetwork mode=allow ssid= SAHLAN key "TECHNOLOGY"
17. Enabling a hosted network = netsh wlan set hostednetwork mode=allow ssid=SAHLAN key="123456789”
18. Disabling a hosted network = netsh wlan set hostednetwork mode=disallow ssid=SAHLAN key="123456789”
19. Staring a hosted network = netsh wlan start hostednetwork
20. Stopping a hosted network = netsh wlan stop hostednetwork
21. Viewing the available hosted network = netsh wlan show hostednetwork
22. Viewing the password of a hosted network = netsh wlan show hostednetwork setting=security
23. Converting infrastructure network to ad hoc network = netsh wlan set profileparameter name=sahlanpc ConnectionType=IBSS
24. Auto starting a network = netsh wlan set profileparameter name=sahlanpc Connectionmode=auto
25. Stop auto starting a network = netsh wlan set profileparameter name=sahlanpc Connectionmode=manual
26. View the default computer name = hostname
27. Change the computer name from Sahlan2 to Computer-1 = wmic computersystem where caption="SAHLAN2" rename "computer
28. Setting the workgroup name to TECNOLOGY= wmic computersystem where name="%computername%" call joindomainorworkgroup name="TECHNOLOGY"
29. Share Sahlan folder in D: = net share MyDDrive=D:
30. Share HDD = net share MyHDrive=C:
31. Share ODD = net share MyODrive=F:
32. Share students document file in C Drive = net share "student files"=c:student
33. View the shared folder on the system= net share
34. Delete shared items = net share "student files" /delete or net share d: /delete
35. View the index number of a network adapter = wmic nic get name, index
36. How to turn on wireless adapter = wmic path Win32_NetworkAdapter where index=21 call enable OR wmic path Win32_NetworkAdapter where NetConnectionID="Wireless Network Connection 3" call enable