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Top 10 Most Useful MS-DOS Commands

September 12, 2014 by Harish Bali

DOS (Disk Operating System) was one of the most usable operating systems during the initial period of personal computer’s emergence into homes and offices. MS-DOS is Microsoft’s version of DOS which is integrated into most of their operating systems, including Windows 8. I will be talking about common DOS commands in this post.

Technically speaking, MS-DOS is a command-line operating system that allows you to perform various tasks according to given commands. There is no GUI (Graphical User Interface) here, however it is a lot fun to play. Thus I have compiled this post explaining the most useful MS-DOS commands.

Starting the Windows command prompt

It is quite easy to open the windows command prompt. Hit the ‘Windows key’ along with ‘r’ key to get the run dialogue box [windows key + r].

windows plus r command

Simply type ‘cmd’ there and hit enter. Now you should see the command prompt window opened. Little jargon buster here – Command line prompt is the prompt that you see in below window – c:\>_

command promp window

10 Most common DOS Commands – Good to know

    1. Ping

Ping is my favorite command of all. I use it to check my internet connection when I find difficulty in connecting to the internet. What ping does is simple. It pings a website from your computer, i.e. this command sends a packet of data to a destination site and it is returned back to you, thus proving that you have established a connection.

For instance consider the command –

Ping www.google.com

This command would send a packet of data to the server pointed by Google.com and it is returned back to you. There are various options for this command to change that number of packets sent and so on. To view the entire list of options -type ping /?

Data default length in bytes is 32, can be modified to 65527 for a particular ping.Packet of such large size can be sent if it is fragmented

In simple terms it is a method to check, whether your computer can communicate with another computer over a network.

Example – Use the ping –t www.Google.com to continuously ping until you cancel it by ctrl + c from keyboard. If you get ‘lost packets’ or ‘do not get reply’, there is problem in the network, check your network cable.

In the newer version of computers running on IPV6, you may see IP version something similar to [ke75::48c1:3214:a16e:8dec%13] to get the IPV4 address use the below command.

Ping -4, similarly replacing “-4” with “-6” will force the ping command to use ipv6 only, both are only necessary when pinging a hostname.( Refers to home page url)

Usability of Ping – To check the reachability of the host and the round trip time.It is a useful dos command, helps in basic level trouble shooting.

    1. Ipconfig

This is a powerful MS-DOS command to view your network status and also perform operations on the same. For instance, you can view your IP-address, subnet mask and much more. Once you type this command, make sure you scroll down if you are looking for a particular information. The following are the parameters that you can use with this command.

If you are having problems connecting to the internet, just use the first three commands given below to renew your IP address. It may solve the problem. 🙂

      • Ipconfig /flushdns

This command removes the DNS (Domain Name System) records in your system.

      • Ipconfig/release

It releases or removes the IP address assigned to your system

      • Ipconfig /renew

Finally, with this command, you will be assigned a new IP

      • Ipconfig /all

This command displays all the configurations of your network card

Usability of ipconfig – Displays IP address, subnet mask and default gateway for all adapters. You can also use it to release and renew your IP, if your internet is not working properly.

    1. Chkdsk

Chkdsk stands for ‘check disk’. It checks your disks drives and finds errors. You can also repair your affected disk drives with this command using the “/f “ options, which will fix your drive.

Before that, you need to have administrative privileges to use this command. For that, run cmd as administrator, by right clicking it on start and selecting “run as administrator” [windows 7]. Follow same procedure on Windows 8, i.e. search for cmd and right click on it.

chkdsk drive name:

Example: chkdsk c: – This will check the C drive for errors and gives you a tiny report.

check disk command

You may follow another process – From the start menu – search for command prompt, click right and choose the option “ run as administrator”

run as administrator

You will get to see administrator command prompt, where you can type – chkdsk and enter. By default chkdsk operates on current disk, if you want to check your D drive type –chkdsk D: and press enter.

If you want chkdsk to also fix the error in a drive – type chkdsk D: /F , ‘F’ here means ‘Fix’ parameter.

Usability of Chkdsk – Primary use of chkdsk command is to check that all the information stored in files, folders on the disk is correct and repair the disk for errors.

    1. TraceRT

This command will trace the path of packets to a particular server of a website or IP.

Tracert www. google.com : Using this MS-DOS command, you can know the path travelled by your packets when it needs to get to Google.com. You can track the timings of each hop, which can help in identifying the source of delay in reaching the server.

Tracert command

Usability of tracert – To visually see the packet data being sent and received and the amount of hops required for the packets to reach its destination. For academic purpose, it is good to learn how traceroute works.

    1. Netstat

This is another network command, unofficially short term for network statistics. It lists the status of your network, the number of active connections and open ports in your system currently along with their current states. It’s popular usage among administrators is to detect computer system for spyware or Trojan. This can also detect the ports for which a computer is listening for incoming connections.

netstat dos command

There are number of reasons for which netstat is used – some of them include – identifying open ports which may indicate Trojan’s waiting for instructions from remote system. Number of errors when trying to reach remote server can be identified. One of the reasons for its gaining popularity is it’s inclusion in most of the operating systems like Linux, windows, Unix etc.

Users unfamiliar with netstat may type netstat/? And get manual with various options.

Usability of netstat dos command – Apart from malware identification, it can provide IP addresses of remote computer( S) to which socket was connected.

    1. Help

The help command all the available commands that you can use in the MS-DOS prompt. You can try out the various commands in that list, but make sure you know what you are doing.

    1. Format

Formatting a drive is quite easy with the ‘Format’ MS-DOS command. You can try this command when you have a defective USB flash drive or when you need to format a particular drive on your computer.

Format [drive name]
Format D: – This will format the D: drive

Purpose of format dos command – Use this command only if you wish to format or erase all the data from your computer. So taking back up of your data becomes important before using this command function of MS DOS.

    1. Dir

This command will list the contents of the current directory you are in. It takes a lot of parameters like /t and /p which will list the files according to a particular criteria. You can get the list of options to use with this command by typing
dir /?

Examples:
dir /t :lists file according to the time it was created

dir command
‘Dir’ command helps to know which directories have been created on specified disk. It also shows the last modified content date, time and file size.

    1. SystemInfo

This is one of my much loved and common dos command. It gives you a detailed description about your system components like processor, memory and much more. You can also use it to check whether your system is 32 bit or 64 bit.

system info command

systeminfo : displays a report about your system’s components

    1. Taskkill

The taskkill command in MS-DOS kills or terminates a running process. It can become handy when some of your programs freeze or when they stop responding.

Most of us are well versed with the process of killing a document using task manager but by using task manager you can’t kill multiple processes at the same time. Command line prompt through taskkill function allows you to kill multiple documents at the same time.

For instance if you have a process called notepad.exe that is not responding. Type the following command to terminate it forcefully. Do note that you will lose any data that the program (here notepad.exe) is holding.

Example -taskkill /f /im notepad.exe : The /f option is to force the app to stop. The /im option will search for the program named ‘notepad.exe’

taskkill terminate notepad

In case you want to see a list of programs running in your system, use the following command.

Taskkill : lists the running processes at a time. For academic purpose, you may learn more on taskkill by clicking here. There are times when certain documents don’t respond, You need to exercise the option to save and close or force close the document.

Well, I think these are obviously the most useful MS-DOS commands you could find. Anyhow I want you to consider the following guidelines to make the most out of these commands.

  • You can type the commands in lowercase or uppercase, no issues.
  • Be cautious when you have opened the prompt as Administrator. Things can go wrong if not done in the right way.
  • You may see an output that is different from the above screenshots. It’s quite natural, and systems differ in specs.
  • You can view the help description for any command using the following format
    command /?
    For example, netstat /? Will return the help description for the netstat MS-DOS command.

Now it is time for you to get some fun playing with common MS-DOS commands. If you find any issues, let me know, and play safe! 🙂

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About Harish Bali

I am passionate about use of Technology in day today life and share what i know best. Other thing i love is Food & Travel

Comments

  1. Hitesh Wadhwa says

    September 13, 2014 at 6:00 am

    The top 6 commands are highly recommended to check the status of your system, network and internet.

Harish Bali

I am passionate about use of Technology in day today life and share what i know best. Other thing i love is Food & Travel Continue reading...

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