lsof command

Linux List The Open Ports And The Process That Owns Them

by on May 30, 2008 · 10 comments

How can I list the open ports on my system and the process that owns them?

{ 10 comments }

Linux: Find Out How Many File Descriptors Are Being Used

by on August 21, 2007 · 11 comments

While administrating a box, you may wanted to find out what a processes is doing and find out how many file descriptors (fd) are being used. You will surprised to find out that process does open all sort of files:
=> Actual log file

=> /dev files

=> UNIX Sockets

=> Network sockets

=> Library files /lib /lib64

=> Executables and other programs etc

In this quick post, I will explain how to to count how many file descriptors are currently in use on your Linux server system.

{ 11 comments }

How do I forcefully unmount a Linux disk partition?

by on January 27, 2006 · 7 comments

It happens many times you try to unmount a disk partition or mounted CD/DVD disk and if you try to unmount device, which is accessed by other users, then you will get error umount: /xxx: device is busy. However, Linux/FreeBSD comes with fuser command to kill forcefully mounted partition. Understanding device error busy error What [...]

{ 7 comments }