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PROGRAM:

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. Perl symbol 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 following backslash-escaped special characters can be
used.

\h: host name
\u: user name
\w: package name
\!: history number

The default value is `"\w[\!]$ "'.

$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;

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