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The cd command, also known as chdir (change directory), is a command-line shell command used to change the current working directory in various operating systems. It can be used in shell scripts and batch files .
The MSBACKUP command is used to backup or restore one or more files from one disk to another. The New York Times said that MSBACKUP "is much better and faster than the old BACKUP command used in earlier versions of DOS, but it does lack some of the advanced features found in backup software packages that are sold separately. [18]
COMMAND.COM in DR-DOS 7.02 and higher provides ECHOS, a variant of the ECHO command omitting the terminating linefeed. [4] [3] This can be used to create a temporary batchjob storing the working directory in an environment variable like CD for later use, for example: ECHOS SET CD=> SETCD.BAT CHDIR >> SETCD.BAT CALL SETCD.BAT DEL SETCD.BAT
The equivalent on DOS (COMMAND.COM) and Microsoft Windows is the cd command with no arguments. Windows PowerShell provides the equivalent Get-Location cmdlet with the standard aliases gl and pwd. On Windows CE 5.0, the cmd.exe Command Processor Shell includes the pwd command. [16]
COMMAND.COM's successor on OS/2 and Windows NT systems is cmd.exe, although COMMAND.COM is available in virtual DOS machines on IA-32 versions of those operating systems as well. The COMMAND.COM filename was also used by Disk Control Program (DCP), an MS-DOS derivative by the former East German VEB Robotron. [2] COMMAND.COM is a DOS program.
Therefore, shell builtins are usually used for simple, almost trivial, functions, such as text output. Because of the nature of some operating systems, some functions of the systems must necessarily be implemented as shell builtins. The most notable example is the cd command, which changes the working directory of the shell.
We’ll use an example from one CD, but you can do it for as many CDs as you need. Let’s look at the rainy-day fund savings example from Part 1. Suppose you’ve saved enough to cover all six ...
JP Software's 4DOS command line processor supports drive letters beyond Z: in general, but since some of the letters clash with syntactical extensions of this command line processor, they need to be escaped in order to use them as drive letters. Windows 9x (MS-DOS 7.0/MS-DOS 7.1) added support for LASTDRIVE=32 and LASTDRIVEHIGH=32 as well.