web dictionary for beginners
Navigating in UNIX
| pwd | Shows the full path of the current directory |
| ls | Lists all the files in the current directory |
| ls -al | Lists all files and information |
| ls –alr | Lists all files and information in all sub-directories |
| ls -alr | more | Same as ls –alr, pausing when screen becomes full |
| ls -alr > filename.txt | Same as ls –alr, outputs the results to a file |
| ls -al /home/usr/bob/ | Lists files and information for /home/usr/bob |
| ls *.html | Lists all files ending with .html |
| cd [directory name] | Changes to a new directory |
| cd .. | Changes to directory above current one |
source: http://www.atlantavirtual.com/support/sup-doc/ssh.shtml
Using SSH with UNIX
Using UNIX
The following is a list of UNIX commands that we found to be helpful when modifying web sites on the server. Most UNIX commands have many options and parameters which are not listed here. For more complete information on using UNIX commands, you can refer to the online manual by typing man [command] at the UNIX prompt, where "[command]" represents the command you would like more information about. Other UNIX help commands you can type are [command] -? and [command] --help.
Note: When something is specified in brackets, such as [command] or [filename], it is used to indicate that you must input your desired information here. Do NOT include brackets in your command.
Note 2 : Only use lower-case letters. UNIX is case sensitive.
source: http://www.atlantavirtual.com/support/sup-doc/ssh.shtml
What is Secure Shell and how do I use it?
Overview of SSH
When you SSH to your domain, you are controlling it using the operating system of the server. Any commands you enter are run on the server (not your local PC) and operate according to the command parameters on the server.
Secure Shell (SSH) provides a command line interface that lets you run commands to modify the contents of your web site. It encrypts all the data sent and received, providing a high level of security.
http://www.atlantavirtual.com/support/sup-doc/ssh.shtml
eregi — Case insensitive regular expression match
<?php
$string = 'XYZ';
if (eregi('z', $string)) {
echo "'$string' contains a 'z' or 'Z'!";
}
?>
eregi_replace — Replace regular expression case insensitive
string eregi_replace ( string $pattern , string $replacement , string $string )
Perform a regular expression search and replace
Example #1 Using backreferences followed by numeric literals
<?php
$string = 'The quick brown fox jumped over the lazy dog.';
$patterns[0] = '/quick/';
$patterns[1] = '/brown/';
$patterns[2] = '/fox/';
$replacements[2] = 'bear';
$replacements[1] = 'black';
$replacements[0] = 'slow';
echo preg_replace($patterns, $replacements, $string);
?> The above example will output:
By ksorting patterns and replacements, we should get what we wanted.
<?php
ksort($patterns);
ksort($replacements);
echo preg_replace($patterns, $replacements, $string);
?> The above example will output:
<?php
$string = 'April 15, 2003';
$pattern = '/(\w+) (\d+), (\d+)/i';
$replacement = '${1}1,$3';
echo preg_replace($pattern, $replacement, $string);
?> The above example will output:
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