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Simple Patch Tools
Creating: When all you want to do is build a patch file that contains only the changes you've made today. Installing: I typically want to take a backup of the files that are going to be overwritten so that I can quickly undo the patch if necessary.
About the Script:
This script is about to build a firewall in Linux OS by using iptables, the user only needs to follow and answer the simple and easy steps and the script will generate the user specified iptables rule in its original form.
I HAVE TESTED THE SCRIPT ON PCLINUXOS, FEDORA-9, DREAM_LINUX, UBUNTU-8.
This is my iptables Version 1.0 (USMAN AKRAM - Lucky)
Useful Commands For The Linux Command Line
This short guide shows some important commands for your daily work on the Linux command line.
With the command:
tail -f /path/to/logfileyou will see all lines added to the logfile. To stop this, press [CTRL] + c
Enter the command line and hit the keys:
[CTRL] + [#]
This will put a # in front of the command and execute it. The shell will take it as comment.
Use the commad:
or the keyboard shortcut:
[CTRL] + [L]
The command is:
convert -border 2x2 old.jpg new.jpg
This creates a new image (new.jpg) with a 2 pixel border from the image old.jpg.
To set the bordercolor to red, use this command:
convert -border 2x2 -bordercolor "#FF0000" old.jpg new.jpg
To get a list of the installed services on the shell, you may use this command (on Fedora, RedHat, CentOS, SuSE, and Mandriva):
To view only the processes owned by a specific user, use the following command:
top -U [USERNAME]
and replace [USERNAME] with the name of the user.
To make a snapshot of the current process table, use the following command:
top -n 1 -b > /tmp/processtable.txt
You can now view the textfile with any text editor, e.g. pico or vi.