Description A Zip archive is a compressed file format that supports lossless data compression. A zip archive might contain multiple files and directories inside it. Zip is a very popular archive file format. Almost every operating system supports zip including all the operating systems by Microsoft as well as all the Linux operating systems. In […]

Description The ls command is one of the basic commands that any Linux user should know. It is used to list information about files and directories within the file system. The ls utility is a part of the GNU core utilities package which is installed on all Linux distributions. In this article, we can see […]

Description ttyload is a lightweight utility which is intended to offer a color-coded graph of load averages over time on Linux and other Unix-like systems. It enables a graphical tracking of system load average in a terminal (“tty“). It is known to run on systems such as Linux, IRIX, Solaris, FreeBSD, MacOS X (Darwin) and Isilon […]

Description In this article, we will explain one of the critical Linux system administration tasks – performance monitoring in regards to system/CPU load and load averages. Before we move any further, let’s understand these two important phrases in all Unix-like systems: System load/CPU Load – is a measurement of CPU over or under-utilization in a Linux […]

Description The Linux Operating System is filled with several commands which any aspiring Linux expert or power user e.g. system admin must have a good grasp of. One of such commands is uptime and today, I’ll briefly discuss its purpose and syntax. Uptime is a command that returns information about how long your system has been running together with […]

Description grep is a powerful file pattern searcher that comes equipped on every distribution of Linux. If, for whatever reason, it is not installed on your system, you can easily install it via your package manager (apt-get on Debian/Ubuntu and yum on RHEL/CentOS/Fedora). 1.Search and Find Files Let’s say that you have just installed a fresh copy of the new Ubuntu on your machine, and […]

Description A port is a logical entity which represents an endpoint of communication and is associated with a given process or service in an operating system. In this blog we can see the different ways of finding the process/service listening on a particular port in Linux. 1.Using netstat Command netstat (network statistics) command is used to […]

Description lsof meaning ‘LiSt Open Files’ is used to find out which files are open by which process. As we all know Linux/Unix considers everything as a files (pipes, sockets, directories, devices etc). One of the reason to use lsof command is when a disk cannot be unmounted as it says the files are being used. With the help of this command we can easily identify […]

Description We can use the lsof command to know if someone is using a file, and if they are, who. It reads kernel memory in its search for open files and helps you list all open files. In this case, an open file may be a regular file, a directory, a block special file, a character […]

Description Ping is a simple, widely used, cross-platform networking utility for testing if a host is reachable on an Internet Protocol (IP) network. It works by sending a series of Internet Control Message Protocol (ICMP) ECHO_REQUEST messages to the target host and waiting for an ICMP echo reply (or ECHO_RESPONSE). You can run a ping test in order to establish if your computer can communicate […]