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The 'ls' command is an external command (found in /bin)
The DOS message "bad command or file name" means that the command you entered was not recognized as an internal command or as an external command in the working directory or path.
Internal commands are functions that are built into the command interpreter, External commands are those not included in the interpreter, and are instead invoked by calling an external binary. Whether or not a particular command is internal or external varies by system. For example, echo is an internal command in MS-DOS (it is built into COMMAND.COM), while in most Linux systems, it is an external one, provided by GNU coreutils.DOS Internal command is associated with his Shell file Command.Com.. DOS external command is saved on the disk..
Open command prompt and simple write "ipconfig" and press enter. Note: Do not use colons "" Just use ipconfig
Internal commands are the commands that are executed <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> directly by the shell. These commands will not have a separate process running for each. External commands are the commands that are executed by the kernal. These commands will have a process id running for it. Internal commands are stored in the cmd.exe command interpreter, ex. Dir External commands correspond to a .com or .cmd file, ex.
assuming that by down you mean get... ipconfig if you want all ip settings then ipconfig /all command ipconfig If you mean to disable or turn off the ip to disconnect from the internet then ipconfig /release
ipconfig /release
Internal commands are executed by the shell and do not exist as a separate binary program. You can find out which of these there are by looking at the 'man' entry for the shell you are using. External commands can be found in various directories, such as /bin, /usr/bin, etc.
ipconfig /release is the full command line.
1. Internal Command: Present in Command.com..2. External Command: Present in the disk..
For Unix/linux, use the 'ifconfig' command. For Windows, use 'ipconfig'
On Windows the command is IPCONFIG. That displays the configuration, though IPCONFIG /ALL displays everything. To do a DHCPREFRESH, type IPCONFIG /RENEW.