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Note that executing cd from the command line with no arguments has different effects in different operating systems. For example, if cd is executed without arguments in DOS, OS/2, or Windows, the current working directory is displayed (equivalent to Unix pwd). If cd is executed without arguments in Unix, the user is returned to the home directory.
For example, in DOS 5, if the current directory is C:\TEMP, then TRUENAME command.com will display C:\TEMP\COMMAND.COM (which does not exist), not C:\DOS\COMMAND.COM (which does and is in the PATH). This command displays the UNC pathnames of mapped network or local CD drives. This command is an undocumented DOS command.
(For articles about commands not built into the command processor see category External DOS commands.) Pages in category "Internal DOS commands" The following 32 pages are in this category, out of 32 total.
0F 8x cd [g] Conditional jump near. Differs from older variants of conditional jumps in that they accept a 16/32-bit offset rather than just an 8-bit offset. IMUL r, r/m: 0F AF /r: Two-operand non-widening integer multiply. FS: 64: Segment-override prefixes for FS and GS segment registers. 3 GS: 65: PUSH FS: 0F A0: Push/pop FS and GS segment ...
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]
The most notable example is the cd command, which changes the working directory of the shell. Since each executable program runs in a separate process, and working directories are specific to each process, loading cd as an external program would not affect the working directory of the shell that loaded it. [5]
This is a list of POSIX (Portable Operating System Interface) commands as specified by IEEE Std 1003.1-2024, which is part of the Single UNIX Specification (SUS). These commands can be found on Unix operating systems and most Unix-like operating systems.