Main index

Introducing UNIX and Linux

More on shells

Simple arithmetic
      Arithmetic expansion
            Operators for arithmetic expansion
      The 'expr' command
Pattern matching
            Examples of patterns
      The case statement
Entering and leaving the shell
More about scripts with options
Symbolic links
Setting up terminals
Conventions used in UNIX file systems


The following commands were introduced in this chapter

exit cause the shell to exit
expr evaluate an expression
getopts parse options for a utility
set set options and positional parameters
tabs reset the tab positions
tput change terminal characteristics
unset unset options and positional parameters

Copyright © 2002 Mike Joy, Stephen Jarvis and Michael Luck