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The C shell (csh or the improved version, tcsh) is a Unix shell created by Bill Joy while he was a graduate student at University of California, Berkeley in the late 1970s. It has been widely distributed, beginning with the 2BSD release of the Berkeley Software Distribution (BSD) which Joy first distributed in 1978.
Hamilton C shell: Win32, OS/2 csh 1988 [12] Yes (OS/2 version no longer maintained) Optional Optional Proprietary: No Text-based CLI No No Yes (-t timestamp operator) Yes Yes (stdin, stdout, stdout+stderr) Yes (via variables and options) Yes (via login.csh, startup.csh and logout.csh) Yes (command line option) Yes Yes Scsh: POSIX: scsh 1994 Yes ? ?
Caesium hydride or cesium hydride is an inorganic compound of caesium and hydrogen with the chemical formula Cs H.It is an alkali metal hydride.It was the first substance to be created by light-induced particle formation in metal vapor, [2] and showed promise in early studies of an ion propulsion system using caesium. [3]
The material is a ternary polyhydride compound of carbon, sulfur and hydrogen with a chemical formula that is thought to be CSH 8.As of October 2020, the material's molecular structure remains uncharacterized, as extreme pressures and the light elements used are unsuitable for most measurements, such as X-ray determination.
Hamilton C shell and Cygwin bash date loops. Lacking fork or a high performance way to recreate that functionality, Hamilton uses the Windows threads facilities instead. [6] [8] When a new thread is created, it runs within the same process space and it shares all of the process state. If one thread changes the current directory or the contents ...
Bourne shell sh. Almquist shell (ash) Debian Almquist shell (dash) Bash (Unix shell) bash; KornShell ksh. Z shell zsh; C shell csh. TENEX C shell tcsh; Ch shell ch; Emacs shell eshell; Friendly interactive shell fish; PowerShell pwsh; rc shell rc, a shell for Plan 9 from Bell Labs and Unix; Stand-alone shell sash; Scheme Shell scsh
[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 ...
tcsh added filename and command completion and command line editing concepts borrowed from the TENEX operating system, which is the source of the “t”. [7] Because it only added functionality and did not change what was there, tcsh remained backward compatible [8] with the original C shell.