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How does password salt help against a rainbow table attack?
...ee what purpose the salt serves,
A rainbow table attack always needs /etc/passwd (or whatever password database is used), or else how would you compare the hashes in the rainbow table to the hashes of the actual passwords?
As for the purpose: let's say the attacker wants to build a rainbow table fo...
Read user input inside a loop
...
read input
echo $input;
done
Unit test:
for line in $(cat /etc/passwd); do
read input
echo $input;
echo "[$line]"
done
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Allow user to set up an SSH tunnel, but nothing else
... may be tunneling, without an interactive shell, to set that shell in /etc/passwd to /usr/bin/tunnel_shell.
Just create the executable file /usr/bin/tunnel_shell with an infinite loop.
#!/bin/bash
trap '' 2 20 24
clear
echo -e "\r\n\033[32mSSH tunnel started, shell disabled by the system administr...
Easiest way to activate PHP and MySQL on Mac OS 10.6 (Snow Leopard), 10.7 (Lion), 10.8 (Mountain Lio
...extMate, but the free TextWrangler or vi or nano will do too), and open:
/etc/apache2/httpd.conf
Find the line:
"#LoadModule php5_module libexec/apache2/libphp5.so"
And uncomment it (remove the #).
Download and install the latest MySQL version from mysql.com. Choose the x86_64 version...
PDOException “could not find driver”
... get it working, you will need to restart your web-server:
Apache: sudo /etc/init.d/apache2 restart
Nginx: sudo /etc/init.d/nginx restart
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Laravel requires the Mcrypt PHP extension
...extension into the mods-available. You'll need to symlink it.
sudo ln -s /etc/php5/conf.d/mcrypt.ini /etc/php5/mods-available/mcrypt.ini
On all Ubuntu versions you'll need to enable the mod once it's installed. You can do that with php5enmod.
sudo php5enmod mcrypt
sudo service apache2 restart
...
PHP code is not being executed, instead code shows on the page
...
I'm running Apache on Ubuntu and my issue was that the /etc/apache2/mods-available/php5.conf file was missing this:
<FilesMatch ".+\.ph(p[345]?|t|tml)$">
SetHandler application/x-httpd-php
</FilesMatch>
I added it back in and php was parsing php files correctly....
phpmyadmin logs out after 1440 secs
...ime by adding the following to your config.inc.php file (typically in the /etc/phpmyadmin directory): ini_set('session.gc_maxlifetime', '36000'); This will also localize it to phpmyadmin and not affect the Garbage Collection period of other PHP scripts. And, based on the documentation, the config.i...
Change the maximum upload file size
...
On Linux, it's usually in /etc/php/ or something along those lines. If you're on a shared server, you're out of luck unless your hosting provider is generous enough to provide a per-user php.ini file.
– Johannes Gorset
...
Prevent nginx 504 Gateway timeout using PHP set_time_limit()
...
There are several ways in which you can set the timeout for php-fpm. In /etc/php5/fpm/pool.d/www.conf I added this line:
request_terminate_timeout = 180
Also, in /etc/nginx/sites-available/default I added the following line to the location block of the server in question:
fastcgi_read_timeout ...