How to Check if a Disk is Busy in Linux
This article is part of the following series. Disk utilization in iostat command is a key metric to check if a disk is busy or not in Linux. It is used to calculate the time percent that a disk…
Category Linux
Understanding Maxdepth Mindepth Depth In Linux Find Command
The find command walks a directory tree and acts on files that match your criteria. By default it descends into every subdirectory, no matter how deep. That’s often more than you want. Three options give you control over how deep find goes and in what order it reports results:…
What is IOwait on Linux
Linux IOwait is a common Linux performance issue. Today we will look at what iowait means and what contributes to this problem. Hope this can give you more ideas about high IOwait issue. IOwait on Linux The iowait column on…
Check DNS Records with Examples – PTR MX SRV CNAME AAAA
DNS is a very critical part of the Linux operation world. We will cover the most common DNS records today. All domains are required to have at least a few essential DNS records for a user to be able to…
4 ways to Check DNS Record with dig Command in Linux
The most efficient way to check DNS records in Linux is using dig command. This command will send the DNS query to the name servers listed in the resolver(). It allows you to query information about various DNS records, including…
4 Commands to Check HBA WWN WWNN WWPN on Linux
Introduction If you work with Fibre Channel (FC) storage, sooner or later you’ll need to find your server’s HBA (Host Bus Adapter) identifiers. Whether you’re zoning a SAN switch, presenting a LUN from a storage array, or troubleshooting a multipath…
How to Find disk SCSI ID WWIDS In Linux
On Linux disk SCSI ID uniquely identifies each SCSI device on the SCSI bus. A unique SCSI ID is generated when a scsi disk is added to Linux system. SCSI ID can be used for representing a disk in the…
3 Ways to Open a port in Linux
How to open a port on Linux is a common question when testing a firewall-related problem. In this article, we will use nc command and Python code to open a TCP port manually on Linux and check if this port…
Linux Tcpdump: Filter ipv6 ntp ping packets
Tcpdump is a very powerful Linux command to capture packets. We collect the following tcpdump command examples to help you quickly filter the packets you need. How to filter ipv6 ntp ping packets with tcpdump? Related Posts: 20 Advanced Tcpdump…
3 commands to Find MAC Address In Linux
How to list MAC address on Linux is a commonly asked question during a Linux job interview. Here are some methods to get the MAC address. These commands are safe to run without changing anything. The following commands can get…