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COMMAND.COM, the original Microsoft command line processor introduced on MS-DOS as well as Windows 9x, in 32-bit versions of NT-based Windows via NTVDM; cmd.exe, successor of COMMAND.COM introduced on OS/2 and Windows NT systems, although COMMAND.COM is still available in virtual DOS machines on IA-32 versions of those operating systems also.
Multics had a pwd command (which was a short name of the print_wdir command) [11] from which the Unix pwd command originated. [12] The command is a shell builtin in most Unix shells such as Bourne shell, ash, bash, ksh, and zsh. It can be implemented easily with the POSIX C functions getcwd() or getwd().
The read–eval–print loop involves the programmer more frequently than the classic edit–compile–run–debug cycle. Because the print function outputs in the same textual format that the read function uses for input, most results are printed in a form that could be copied and pasted back into the REPL. However, it is sometimes necessary ...
Command-line completion generally only works in interactive mode. That is, it cannot be invoked to complete partially typed commands in scripts or batch files, even if the completion is unambiguous. The name tab completion comes from the fact that command-line completion is often invoked by pressing the tab key.
JavaScript WSH Engine JavaScript/Java: Java & variants .java, .j, jva, others With many JavaScript implementations Sun/Other Java Organisations Freeware Take Command WSH Engine 4NT/Take Command: TCC, the current version of 4NT p .btm, .cmd, bat, others Check JP Software JP Software Proprietary 2015 Early development 92Script WSH Engine
Support for command history means that a user can recall a previous command into the command-line editor and edit it before issuing the potentially modified command. Shells that support completion may also be able to directly complete the command from the command history given a partial/initial part of the previous command.
Since Java 9, Java instead includes JShell, a different read–eval–print loop (REPL) shell based on Java syntax, indicating that BeanShell will not be continued. [10] A fork of BeanShell, BeanShell2, was created in May 2007 on the now-defunct Google Code Web site. [11]
Scala normally manages the memory automatically in its JVM and JavaScript targets. However, the LLVM-based Scala Native compiler supports the use of pointers, as well as C-style heap allocation (e.g. malloc , realloc , free ) and stack allocation ( stackalloc ).