Linux, DevOps, Middleware and Cloud

                                          **The Proc File System** Today I have come to know these all things about Proc File System. really so Interesting.                                     The proc filesystem is a special filesystem found on most UNIX-based systems. It holds a great deal of information, in ASCII format, most of which is not very friendly to the average user.It is important that you keep in mind that the files under /proc are not kept on a physical storage, meaning they are subject to change after reboot. Also, they should not really be called files as they are pseudo-files, as they exist only in memory. I break that rul...

Zombie process                                            On Unix and Unix-like computer operating systems , a zombie process or defunct process is a process that has completed execution but still has an entry in the process table . This entry is still needed to allow the process that started the (now zombie) process to read its exit status . The term zombie process derives from the common definition of zombie —an undead person. In the term's metaphor, the child process has " died " but has not yet been " reaped ". Also, unlike normal processes, the kill command has no effect on a zombie process. Finding if zombies exist execute the top command one line is tasks: Example output: Tasks: 139 total,   2 running, 136 sleeping,   0 stopped,   1 zombie ...