Wicked Cool Perl Scripts

by Oualline, Steve

• ISBN13: 9781593270629
• ISBN10: 1593270623
• Format: Trade Paper
• Copyright: 2006-02-06
• Publisher: No Starch Press

Summary

Most Perl programmers have been frustrated at one time or another because the system just wouldn't do what they wanted it to do. There was that one simple and obvious utility that was missing that would make life so much easier: A tool to get a stock quote, show off a photograph collection, or even display a collection of favourite comics. Wicked Cool Perl Scripts is about writing those utilities quickly and easily. A collection of handy utilities that solves difficult problems, Wicked Cool Perl Scripts is a great resource for the savvy Perl programmer.

Table of Contents

Introduction	xv
Wicked Cool Perl Programs	xvi
You Are Not a Dummy	xvi
Plain Old Documentation (POD)	xvi
How This Book Is Organized	xvi
General-Purpose Utilities	1	(20)
Automatic Help Option	1	(2)
The Code	2	(1)
Using the Module	2	(1)
The Results	3	(1)
How It Works	3	(1)
Finding Duplicate Files	3	(5)
The Code	3	(2)
Running the Script	5	(1)
The Results	5	(1)
How It Works	5	(2)
Hacking the Script	7	(1)
Checking for Changed Files	8	(4)
The Code	8	(2)
Running the Script	10	(1)
The Results	10	(1)
How It Works	10	(2)
Hacking the Script	12	(1)
Date Reminder	12	(4)
The Code	12	(2)
Running the Script	14	(1)
The Results	14	(1)
How It Works	14	(2)
Hacking the Script	16	(1)
Currency Converter	16	(5)
The Code	16	(2)
Running the Script	18	(1)
The Results	18	(1)
How It Works	18	(1)
Hacking the Script	19	(2)
Website Management	21	(24)
Website Link Checker	21	(10)
The Code	22	(3)
Running the Script	25	(1)
The Results	25	(1)
How It Works	26	(4)
Hacking the Script	30	(1)
Orphan File Checker	31	(3)
The Code	31	(1)
Running the Script	32	(1)
The Results	32	(1)
How It Works	33	(1)
Hacking the Script	34	(1)
Hacker Detection	34	(4)
The Code	34	(2)
Running the Script	36	(1)
The Results	36	(1)
How It Works	37	(1)
Hacking the Script	38	(1)
Locking Out Hackers	38	(7)
The Code	38	(3)
Running the Script	41	(1)
The Results	41	(1)
How It Works	42	(1)
Hacking the Script	43	(2)
CGI Debugging	45	(12)
Hello World	45	(2)
The Code	46	(1)
Running the Script	46	(1)
The Results	46	(1)
How It Works	46	(1)
Hacking the Script	47	(1)
Displaying the Error Log	47	(3)
The Code	47	(1)
Running the Script	48	(1)
The Results	48	(1)
How It Works	49	(1)
Hacking the Script	50	(1)
Printing Debugging Information	50	(3)
The Code	50	(1)
Using the Function	51	(1)
The Results	51	(1)
How It Works	52	(1)
Hacking the Script	52	(1)
Debugging a CGI Program Interactively	53	(4)
The Code	53	(1)
Running the Script	53	(1)
The Results	54	(1)
How It Works	54	(1)
Hacking the Script	55	(2)
CGI Programs	57	(20)
Random Joke Generator	57	(3)
The Code	57	(1)
Running the Script	58	(1)
The Results	58	(1)
How It Works	59	(1)
Hacking the Script	60	(1)
Visitor Counter	60	(3)
The Code	60	(1)
Running the Script	61	(1)
The Results	61	(1)
How It Works	61	(2)
Hacking the Script	63	(1)
Guest Book	63	(6)
The Code	63	(2)
Running the Script	65	(1)
The Results	66	(1)
How It Works	66	(3)
Hacking the Script	69	(1)
Errata Submission Form	69	(8)
The Code	69	(3)
Running the Script	72	(1)
The Results	72	(1)
How It Works	73	(2)
Hacking the Script	75	(2)
Internet Data Mining	77	(14)
Getting Stock Quotes	78	(2)
The Code	78	(1)
Running the Script	79	(1)
The Results	79	(1)
How It Works	79	(1)
Hacking the Script	80	(1)
Comics Download	80	(11)
The Code	81	(3)
Running the Script	84	(1)
The Results	85	(1)
How It Works	86	(4)
Hacking the Script	90	(1)
Unix System Administration	91	(26)
Fixing Bad Filenames	91	(3)
The Code	92	(1)
Running the Script	92	(1)
The Results	93	(1)
How It Works	93	(1)
Hacking the Script	94	(1)
Mass File Renaming	94	(3)
The Code	94	(1)
Running the Script	95	(1)
The Results	96	(1)
How It Works	96	(1)
Hacking the Script	97	(1)
Checking Symbolic Links	97	(2)
The Code	97	(1)
Running the Script	98	(1)
The Results	98	(1)
How It Works	98	(1)
Hacking the Script	99	(1)
Disk Space Alarm	99	(2)
The Code	99	(1)
Running the Script	100	(1)
The Results	100	(1)
How It Works	100	(1)
Hacking the Script	101	(1)
Adding a User	101	(6)
The Code	101	(2)
Running the Script	103	(1)
The Results	104	(1)
How It Works	104	(3)
Hacking the Script	107	(1)
Disabling a User	107	(3)
The Code	107	(1)
Running the Script	108	(1)
The Results	108	(1)
How It Works	109	(1)
Hacking the Script	110	(1)
Deleting a User	110	(3)
The Code	110	(2)
Running the Script	112	(1)
The Results	112	(1)
How It Works	112	(1)
Hacking the Script	113	(1)
Killing a Stuck Process	113	(4)
The Code	113	(2)
Running the Script	115	(1)
The Results	115	(1)
How It Works	115	(1)
Hacking the Script	116	(1)
Picture Utilities	117	(34)
Image Information	117	(3)
The Code	117	(2)
Running the Script	119	(1)
The Results	119	(1)
How It Works	119	(1)
Hacking the Script	120	(1)
Creating a Thumbnail	120	(3)
The Code	120	(2)
Running the Script	122	(1)
The Results	122	(1)
How It Works	122	(1)
Hacking the Script	123	(1)
Photo Gallery	123	(11)
The Code	123	(5)
Running the Script	128	(1)
The Results	129	(1)
How It Works	129	(5)
Hacking the Script	134	(1)
Card Maker	134	(17)
The Code	135	(6)
Running the Script	141	(3)
The Results	144	(2)
How It Works	146	(4)
Hacking the Script	150	(1)
Games and Learning Tools	151	(32)
Guessing Game	152	(1)
The Code	152	(1)
Running the Script	153	(1)
The Results	153	(1)
How It Works	153	(1)
Hacking the Script	153	(1)
Flash Cards	153	(5)
The Code	154	(1)
Running the Script	155	(1)
The Results	155	(1)
How It Works	156	(2)
Hacking the Script	158	(1)
Web-Based Quiz	158	(12)
The Code	158	(4)
Running the Script	162	(3)
The Results	165	(1)
How It Works	166	(3)
Hacking the Script	169	(1)
Teaching a Toddler	170	(13)
The Code	170	(6)
Running the Script	176	(1)
The Results	177	(1)
How It Works	178	(3)
Hacking the Script	181	(2)
Development Tools	183	(14)
Code Generator	183	(2)
The Code	184	(1)
Running the Script	184	(1)
The Results	185	(1)
How It Works	185	(1)
Hacking the Script	185	(1)
Dead Code Locator	185	(4)
The Code	186	(1)
Running the Script	187	(1)
The Results	187	(1)
How It Works	187	(2)
Hacking the Script	189	(1)
EOL Type Detector	189	(3)
The Code	190	(1)
Running the Script	191	(1)
The Results	191	(1)
How It Works	191	(1)
Hacking the Script	192	(1)
EOL Converter	192	(5)
The Code	193	(1)
Running the Script	194	(1)
The Results	194	(1)
How It Works	194	(1)
Hacking the Script	195	(2)
Mapping	197	(46)
Getting the Map	198	(13)
The Code	198	(8)
Using the Module	206	(1)
The Results	207	(1)
How It Works	207	(4)
Hacking the Script	211	(1)
Map Generator	211	(18)
The Code	211	(13)
Running the Script	224	(2)
How It Works	226	(2)
Hacking the Script	228	(1)
The Location Finder	229	(12)
The Code	229	(9)
Running the Script	238	(1)
How It Works	238	(3)
Hacking the Script	241	(1)
Hacking the Grand Canyon	241	(2)
Regular Expression Grapher	243	(62)
Regular Expression Parser	244	(4)
The Code	244	(2)
Executing the Module	246	(1)
The Results	246	(1)
How It Works	247	(1)
Laying Out the Graph	248	(20)
The Code	248	(15)
Running the Script	263	(1)
How It Works	264	(4)
Hacking the Script	268	(1)
Drawing the Image	268	(18)
The Code	268	(17)
Running the Script	285	(1)
How It Works	285	(1)
Hacking the Script	286	(1)
Regular Expression Grapher	286	(19)
The Code	286	(8)
Running the Script	294	(1)
The Results	294	(4)
How It Works	298	(5)
Hacking the Script	303	(2)
Index	305