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Environment Modules on Scientific Linux, CentOS, and Red Hat Enterprise Linux distributions in the environment-modules package include modules.csh and modules.sh scripts for the /etc/profile.d directory that make modules initialization part of the default shell initialization. One of the advantages of Environment Modules is a single modulefile ...
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.
The control structures, expression grammar, history mechanism and other features in Holub's SH were identical to those of the C shell. In 1988, Hamilton Laboratories began shipping Hamilton C shell for OS/2. [23] It included both a csh clone and a set of Unix-like utilities. In 1992, Hamilton C shell was released for Windows NT. [24]
sh 1971 — UNIX: UNIX — Yes Text-based CLI: No No — Yes — — — — — — Bourne shell 1977 version 7th Ed. UNIX: sh 1977 Yes [1] 7th Ed. UNIX: 7th Ed. UNIX, Proprietary [2] Yes Text-based CLI: No No — Yes Yes (arbitrary fds [citation needed]) Yes (via variables and options) Yes (.profile) Yes (Unix feature) No Yes Bourne shell ...
[9] [better source needed] The C shell also introduced many features for interactive work, including the history and editing mechanisms, aliases, directory stacks, tilde notation, cdpath, job control and path hashing. On many systems, csh may be a symbolic link or hard link to TENEX C shell (tcsh), an improved version of Joy's original version ...
Examples of command-line interpreters include Nushell, DEC's DIGITAL Command Language (DCL) in OpenVMS and RSX-11, the various Unix shells (sh, ksh, csh, tcsh, zsh, Bash, etc.), CP/M's CCP, DOS' COMMAND.COM, as well as the OS/2 and the Windows CMD.EXE programs, the latter groups being based heavily on DEC's RSX-11 and RSTS CLIs.
[2] shc itself is not a compiler such as the C compiler, it rather encodes and encrypts a shell script and generates C source code with the added expiration capability. It then uses the system C compiler to compile the source shell script and build a stripped binary which behaves exactly like the original script.
Though it started as a side branch from the original csh source tree that Bill Joy had created, tcsh is now the main branch for ongoing development. tcsh is very stable but new releases continue to appear roughly once a year, consisting mostly of minor bug fixes. [9] On many systems, such as macOS and Red Hat Linux, csh is actually tcsh.