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Full Discussion: break while loop in BASH
Top Forums Shell Programming and Scripting break while loop in BASH Post 302403676 by wakatana on Saturday 13th of March 2010 07:59:36 PM
Old 03-13-2010
break while loop in BASH

Hi gurus, I have the following part of code which I am using for treating input
Code:
#!/bin/bash

while [[ $1 = -* ]]; do
    arg=$1; shift

    case $arg in
        -u)
            users="$1"
            shift
            ;;
        -g)
            groups="$1"
            shift
            ;;
        -m)
            mlength="$1"
            shift
            ;;
        -t)
            dfileg="$1"
            shift
            ;;
        --help)
            echo "-m maximum count of characters per line in group file"
            echo "for errors see file called: errorlog"
            break
            ;;
        *)
            break
            ;;

when I issue
Code:
./script -u john -g daemon -m 100 -t group

everything works fine

but when I issue
Code:
./script --help

the script echos text but did not exit. (I have to interrupt it by ctrl+c) how can I close script after issuing --help ? Thanks a lot
 

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IO::Async::Protocol::LineStream(3pm)			User Contributed Perl Documentation		      IO::Async::Protocol::LineStream(3pm)

NAME
"IO::Async::Protocol::LineStream" - stream-based protocols using lines of text SYNOPSIS
Most likely this class will be subclassed to implement a particular network protocol. package Net::Async::HelloWorld; use strict; use warnings; use base qw( IO::Async::Protocol::LineStream ); sub on_read_line { my $self = shift; my ( $line ) = @_; if( $line =~ m/^HELLO (.*)/ ) { my $name = $1; $self->invoke_event( on_hello => $name ); } } sub send_hello { my $self = shift; my ( $name ) = @_; $self->write_line( "HELLO $name" ); } This small example elides such details as error handling, which a real protocol implementation would be likely to contain. DESCRIPTION
EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters: on_read_line $line Invoked when a new complete line of input is received. PARAMETERS
The following named parameters may be passed to "new" or "configure": on_read_line => CODE CODE reference for the "on_read_line" event. METHODS
$lineprotocol->write_line( $text ) Writes a line of text to the transport stream. The text will have the end-of-line marker appended to it; $text should not end with it. AUTHOR
Paul Evans <leonerd@leonerd.org.uk> perl v5.14.2 2012-10-24 IO::Async::Protocol::LineStream(3pm)
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