In this article, we want to introduce you to ‘vmstat’ command, which is one of the top monitoring tools that Linux/UNIX users should know of. The vmstat command is used to retrieve the statistics of CPU, virtual memory, paging, processes, threads, disks, traps, I/O blocks, and so on. This useful command will help you a… Read More »
There are different tools to manage storage devices on Linux. One such commonly used tool is the parted command utility. It allows you to create, extend, and delete disk partitions on storage devices. Parted command offers several benefits over other partition tools, such as fdisk, when it comes to managing disk partitions. Some of its… Read More »
Maintaining a healthy and productive Linux environment requires effective system log management. The journalctl command has evolved into an essential resource for accessing and analyzing system logs with the introduction of systemd, the system and service manager for recent Linux distributions. The journalctl command’s adaptability and utility on Linux-based systems will be examined thoroughly in… Read More »
lsof, which means “list open files”, is a command-line utility that shows information on currently opened files and the processes they are associated with in Linux and other Unix-based operating systems. A file in this context could be your regular file, a directory, a block-special file, a library, a character-special file, an executing text reference,… Read More »
Introduction This article will explore the ‘lsblk’ command to understand the structure of storage devices through practical examples with filtering options. This will help you manage, monitor, analyze, and troubleshoot block devices on a Linux system. Block devices are storage devices that store and retrieve data in fixed-size blocks. Installation To install ‘lsblk’, you can… Read More »
Iotop is an open-source and free utility Linux command used to display the statistics of disk input/output by processor/threads and print the summary which gets refreshed every second. It is quite similar to the top command, except that iotop monitors just disk i/o and not other metrics. This command is particularly useful for system administrators… Read More »
sar (System Activity Reporter) is a command line tool used to collect, report, and analyze system activity information in Linux and other Unix-based operating systems. In other words, it gathers information and provides insights on system activity, such as CPU utilization, memory usage, I/O operations, network activity, disk usage, power management, and much more, which… Read More »
The name of the nslookup command is an abbreviated version of “name server lookup”. nslookup sends a request to the local domain name system (DNS) server asking for information from its DNS records. In response, the DNS server returns the IP address or relevant domain information for a specific website or server. However, it can… Read More »
OpenCL is a general purpose computing api that is designed to be hardware accelerated with a supporting gpu and driver. On Linux this api is supported by all major gpu vendors including nvidia, intel and amd. In this quick tutorial we take a look at how to check if your system support opencl api (with… Read More »
Disk I/O speed is an indicator of how fast the system and read/write to the disk. Usually nvme ssds are the fastest and hard drives and external usb flash drives are the slowest. There are many commands that can be used to benchmark the performance of storage disks on linux. For e.g. sysbench, dd and… Read More »
The decode-dimms program from i2c-tools package can be used to extract spd information from the ram modules which provides details about the module including the timings, clock speed, internal layout of the memory blocks including rank and bank count. The command can be installed with the following commands: sudo apt-get install i2c-tools sudo modprobe eeprom… Read More »
So you have downloaded an iso which could be a linux installation or live iso or a windows iso or something other operating system. Now if you are planning to burn it to an actual disk like a cd or dvd, it would be a nice idea to first check if the iso if properly… Read More »
Un-allocated space is that disk space which is not inside any partition and is lying free. This space cannot be formatted to a file-system without first creating a partition in it. In order to use the space in unallocated space, you must either create a new partition in that space, or merge the space with… Read More »
“ls” (list directory contents) is one of the most commonly used commands in Linux. The command displays a list of all the files and directories in the current directory. It is one of the very first commands one should learn when new to Linux. The command is quite popular, works well enough, and can be… Read More »
Sysbench is a command line utility program available on linux that can be used to conduct different types of benchmark tests to measure performance of disk io, memory, cpu and mysql database. In another article we learned how to use sysbench to . In this particular article we take a quick look at how we… Read More »
Tcpdump is a command-line tool for capturing and analyzing network packets in Linux. Basically its a packet sniffer that also breaks them down into easy to read format for human beings. It can be a powerful tool for troubleshooting network connectivity issues by analyzing the network traffic on a system. Tcpdump works by listening for… Read More »
USB ports and devices come in a variety of speeds like USB 2.0 (480 Mbps), USB 3.0 ( 5 Gbps), USB 3.2 Gen 2 (10 Gbps) and so on. When you connect a device to your system on a usb port for the purpose of data transfer (for example an external ssd or hdd) you… Read More »
Wget Command ‘Wget’ is developed as a part of the GNU Project. You can use it to download/extract data and content from web servers. Its name is a combination of the “www” and the word get. It supports downloading over multiple protocols like FTP, SFTP, HTTP and HTTPS. Wget is written in c and can… Read More »
rsync (remote synchronization) is a command-line tool for transferring and synchronizing files and directories locally and remotely in Linux. In other words, rsync is used for transferring files and directories, creating backups, mirroring files, and transferring large files between two locations. rsync identifies the differences between the source and destination files and directories using its… Read More »
Curl (acronym for “Client for url”) is a powerful command line tool and library for transferring files between two hosts. It supports a variety of protocols, including HTTP, SMTP, FTP, and POP3. A few things we can do with the curl command include: download files upload files testing services and APIs setting up custom headers… Read More »