Tools that will display group and user permissions on a set of folder:
– Suramya
May 11, 2005
May 10, 2005
CSS Cheat Sheet
ilovejackdaniels.com has shared this really neat CSS cheat sheet shown below.
Thanks for shaing guys 
CSS Cheat Sheet:
– Suramya
May 9, 2005
May 8, 2005
Monitor Per protocol/port bandwidth usage
These programs will generate a per protocol/port bandwidth usage information on a given server:
– Suramya
May 7, 2005
How to log shell sessions?
Use a program called script, it makes a typescript of terminal session, meaning it logs everything printed on your terminal. Use `man script` to get more information about it.
– Suramya
How to see which programs are opening ports
These tools will help you identify which programs are opening what ports on the system.
1. lsof | grep ‘IPv.’
lsof shows the list of open files, piping it through grep and searching for IPv will give you a list of ports used by a program
lsof -i TCP:<PORT>
where PORT is the one you need to know about the program behind it.
2. netstat -anp
Should display open ports, machines connected to the ports as well as which application has that port open.
If you know of any other ways let me know.
– Suramya
How to find suid files on a linux system
The following commands will list all suid files on a linux system:
Method 1:
find / -perm +ugo=s
Method 2:
find / -perm +4000
Method 3:
/usr/bin/find / -type f \( -perm -004000 -o -perm -002000 \) -exec ls -lg {} \; 2>/dev/null >suidfiles.txt
– Suramya
May 5, 2005
Remove Backgrounds from images using GIMP
Newsforge has a good article that explains how to remove the background from an image using GIMP.
Article: Remove Background from images
The Coroner Toolkit
Linux Magazine has a really good article on The Coroner Tool kit which allows a sysadmin to perform forensics analysis on a compromized system.
Article: Linux Magazine
The Coroner Toolkit: Download Page
– Suramya
How to use Netcat
Often referred to as the ‘Swiss Army Knife of networking,’ netcat is a tool that administrators can use to read and write TCP or UDP data across the network. In addition, it’s extremely useful for network debugging and testing. This article by Vincent Danen at techrepublic.com covers some of the uses of netcat.
– Suramya