June 2004
Intermediate to advanced
1056 pages
39h 58m
English
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Chapter 21. tcsh: An Extended C Shell
This
chapter describes tcsh, an enhanced version of
the C shell. tcsh is also used as the C shell;
in that case, the tcsh features described in
this chapter work even when you run csh. The C
shell was so named because many of its programming constructs and
symbols resemble those of the C programming language.
The
default shell is bash. However, earlier versions
of Mac OS X used tcsh as the default shell. If
you want to use tcsh, you first need to change
your default. To change your default shell, launch the Terminal
application (/Applications/Utilities), and then
change the shell to /bin/tcsh in the
Terminal’s Preferences (Terminal→Preferences).
Overview of Features
Features of tcsh include:
Input/output redirection
Wildcard characters (metacharacters) for filename abbreviation
Shell variables for customizing your environment
Integer arithmetic
Access to previous commands (command history)
Command-name abbreviation (aliasing)
A built-in command set for writing shell programs
Job control
Command-line editing and editor commands
Word completion (tab completion)
Spellchecking
Scheduled events, such as logout or terminal locking after a set idle period and delayed commands
Read-only variables
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.