Using Perl and Regular Expressions to Process HTML Files - Part 3 by John Dixon
In Part 1 we had a quick look at what Perl and regular expressions are, and introduced the idea of using them to process HTML files. In Part 2 we developed a Perl script to process a single HTML file. In this part we'll look at how to process multiple files. ... script1.pl 1 open (IN, "file1.htm"); 2 open (OUT, ">new_file1.htm"); 3 while ($line = [IN]) { 4 $line =~ s/[h1]/[h1 class="big"]/; 5 (print OUT $line); 6 } 7 close (IN); 8 close (OUT); script2.pl 1 foreach $file (@ARGV) { 2 rename $file, "$file.bak"; 3 open (IN, " 4 open (OUT, ">$file"); 5 while ($line = [IN]) { 6...

Using Perl and Regular Expressions to Process HTML Files - Part 4 by John Dixon
In Part 1 we had a quick look at what Perl and regular expressions are, and introduced the idea of using them to process HTML files. In Part 2 we developed a Perl script to process a single HTML file. In part 3 we looked at one way of processing multiple files. ... script2.pl 1 foreach $file (@ARGV) { 2 rename $file, "$file.bak"; 3 open (IN, " 4 open (OUT, ">$file"); 5 while ($line = [IN]) { 6 $line =~ s/[h1]/[h1 class="big"]/; 7 (print OUT $line); 8 } 9 close IN; 10 close OUT; 11 } In script2.pl, it's line 1 that enables us to enter filenames at the command prompt.

Power of the Unix 'for' Loop by Praveen Puri
If you are a programmer or engineer working in a unix or linux environment, you will probably find the shell 'for' loop to be a handy tool for automating command line tasks. Here are three examples of the 'for' loop. All the commands are in italics and should be entered on the command line,... If the file is readable, print the first line, otherwise print an error message: for i in `cat file_list.txt` do if test -r $i then echo "Here is the first line of file: $i" sed 1q $i else echo "file $i cannot be open for reading." fi done Here, we loop...

Windows Vista Top 10 Tips and Tricks by Zoran Petrovic
1. Power button default action The default action for the Power button on the start menu in Windows Vista is Sleep, which isn’t necessarily useful for everybody. You can configure this setting easily by using the advanced power settings panel, which is a little tricky to get to normally, but... You can do that by right clicking the Command Prompt in the list and choose "Run as Administrator" Once you have an administrator command prompt open, you can run the utility by using the following syntax: SFC [/SCANNOW] [/VERIFYONLY] [/SCANFILE=] [/VERIFYFILE=] [/OFFWINDIR= /OFFBOOTDIR=] The...

Cisco CCNA Certification: The Hidden Details Of Telnet by Chris Bryant
Telnet is a simple yet powerful program that allows you to connect to a remote Cisco router or switch, and then configure it as though you were right at the console. Telnet is also one of those features that seems so very simple, until you get asked a half dozen questions about it on your CCNA... Open Password required, but none set [Connection to 3.3.3.3 closed by foreign host] To allow telnet access into a Cisco router, configure the VTY lines with a password and the login command: R3#conf t Enter configuration commands, one per line.

C++ Tutorial 1, Introduction to C++ by Chris Silop
Introduction to C++ Why Learn C++? C++ may at first seem like a boring, confusing programming language that you can only program command prompt applications with. Well, that is what it is like in the [b]begining[/b]. And you are going to need to learn the basics like this with any programming... If you did everything right, it should open a command prompt like application and say 'Hello World' or whatever you told it to say. ... using namespace std; Saves time by telling the compiler that we are going to be using the 'std::' functions, which stands for 'standard'.

Take Control of Windows Vista by Mike Manchuk
Windows Vista is still in beta and already it is looking really good. There are a lot of features that can help some and hinder others. In this article you will see some tips to get Windows Vista to act the way you want it. Restore Virtual Folders in the Start Menu in Windows Vista Windows... Run Command in the Windows Vista Start Menu Way back in the good old days of XP there was a little button in the start menu called the Run command. ... Set the two first account protection items to No Prompt and select disabled for the remaining items.

Cisco CCNA Certification Exam Training: Telnet, Passwords, and Privilege Levels by Chris Bryant
Your CCNA certification exam is likely going to contain questions about Telnet, an application-level protocol that allows remote communication between two networking devices. With Telnet use being as common as it is, you had better know the details of how to configure it in order to pass your... If you want to assign privilege levels on an individual user basis, configure usernames and passwords and use the privilege 15 command in the actual username/password command itself to give this privilege levels to some users but not all.

Linux or Windows - Which is it? by J. Brian Keith
Computer users and programmers have become so accustomed to using Windows, even for the changing capabilities and the appearances of the graphical interface of the versions, therefore it has remained Microsoft's product. Although, Lycoris, Red Hat, Mandrake, Suse, Knoppix, Slackware and Lindows... The command interpreters in the Windows 9x series are very similar to each other and the NT class versions of Windows also have similar command interpreters. ... The command prompts of the operating systems are very different.

Linux Training - Linux Installation Help - How To Install the Linux OS from a New Linux Download by Clyde Boom
You can install Linux from CD or DVD onto a new computer system. This will allow you to learn how to use Linux to get real, practical Linux training and experience. In this article, we're talking about a new system that doesn't already have an operating system (like Windows) on it. ... Then run the su command to log in and work as the root user. ... For example, you work as the root user to run a Linux command to create a new Linux user, or to do the steps to install a Linux server. ... You can also work at the Linux command line and learn how to use Linux commands - the way the real pros...