NAME

perlsh - one-line perl evaluator with line editing function and variable name completion function

SYNOPSIS

  perlsh

DESCRIPTION

This program reads input a line, and evaluates it by perl interpreter, and prints the result. If the result is a list value then each value of the list is printed line by line. This program can be used as a very strong calculator which has whole perl functions.

This is a sample program Term::ReadLine::Gnu module. When you input a line, the line editing function of GNU Readline Library is available. The variable name completion function is also available.

Before invoking, this program reads ~/.perlshrc and evaluates the content of the file.

When this program is terminated, the content of the history buffer is saved in a file ~/.perlsh_history, and it is read at next invoking.

VARIABLES

You can customize the behavior of perlsh by setting following variables in ~/.perlshrc;

$PerlSh::PS1

The primary prompt string. The default value is "$ ".

$PerlSh::PS2

The secondary prompt string. The default value is "> ".

$PerlSh::HISTFILE

The name of the file to which the command history is saved. The default value is ~/.perlsh_history.

$PerlSh::HISTSIZE

If not undef, this is the maximum number of commands to remember in the history. The default value is 256.

$PerlSh::STRICT

If true, restrict unsafe constructs. See use strict in perl man page. The default value is 0;

FILES

~/.perlshrc

~/.perlsh_history

~/.inputrc

SEE ALSO

Term::ReadLine::Gnu

GNU Readline Library Texinfo Manual

AUTHOR

Hiroo Hayashi <hiroo.hayashi@toshiba.co.jp>

BUGS

Completion does not work for variable name whose value is 'undef'.

Completion does not work for variable name with package name (`foo::bar').