Linux and UNIX Man Pages

Test Your Knowledge in Computers #268
Difficulty: Easy
In 1936, Turing published his paper 'On Computable Numbers, with an Application to the Entscheidungsproblem'. In this paper, Turing reformulated Kurt Godel's 1931 results on the limits of proof and computation, replacing Godel's universal arithmetic-based formal language with the formal and simple hypothetical devices that became known as Turing machines.
True or False?
Linux & Unix Commands - Search Man Pages

zsh(1) [freebsd man page]

ZSH(1)                                                        General Commands Manual                                                       ZSH(1)

NAME
zsh - the Z shell SYNOPSIS
/usr/sfw/bin/zsh DESCRIPTION
Zsh was originally installed as /usr/bin/zsh, but has been moved to /usr/sfw/bin/zsh to match its status as an External utility. This means that it is not controlled by Sun, and incompatibilities may be introduced in any release (see attributes(5)). This manual page is a placeholder for the original; the new manual page can be found in /usr/sfw/share/man. To view the page, specify the alternate path to the man command on the command line: man -M /usr/sfw/share/man zsh or by putting /usr/sfw/share/man in the MANPATH environment variable. SEE ALSO
attributes(5). June 18, 2003 ZSH(1)

Check Out this Related Man Page

shells(4)							   File Formats 							 shells(4)

NAME
shells - shell database SYNOPSIS
/etc/shells DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser- shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root. A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines which search the file. Blank lines are also ignored. The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh, /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list. Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1). FILES
/etc/shells list of shells on system SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4) SunOS 5.11 20 Nov 2007 shells(4)

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