May 24 · 3 min read · Strings are everywhere in data. Every dataset you'll ever work with has text — names, addresses, categories, error messages. If you can't clean and manipulate strings, you can't do data analysis. Here
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Jan 23 · 3 min read · chmod is a command-line utility used to change the access permissions of file system objects such as files and directories. It allows you to control who can read, write, and execute those objects. Changing Permissions Using Octal Notation Example Usa...
Join discussionJan 20 · 3 min read · chown changes the ownership of files and directories. This involves modifying the user and/or group associated with a file, determining who has access and permissions. Changing File Ownership to a Specific User Example Usage: chown user file.txt What...
Join discussionJan 17 · 2 min read · Kafka looks simple on the surface. Underneath, it’s a carefully engineered system built for extreme throughput, fault tolerance, and replayability. Mastering Kafka really comes down to understanding a few core components and why certain design decisi...
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Jan 16 · 3 min read · The usermod command modifies a user account's properties on a Linux system. It allows administrators to change various attributes associated with a user, such as the user's login name, home directory, shell, groups, and password expiry information. C...
Join discussionJan 13 · 4 min read · tcpdump is a powerful command-line packet analyzer used to capture network traffic passing through a network interface. It allows you to monitor and diagnose network issues by displaying the contents of network packets. Capturing all traffic on an in...
Join discussionJan 11 · 1 min read · I do not need to use WinDbg for userland debugging that often BUT when I need to use it I REALLY need to use it! \O/ I keep forgetting some of the commands and the references I find online are often missing something or just too complex (Microsoft’s ...
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Jan 10 · 7 min read · As a professional DevOps engineer, you live at the command line. Whether you're provisioning infrastructure, managing containers, or automating pipelines, speed and precision are paramount. Forget digging through documentation—this cheat sheet compil...
Join discussionJan 9 · 4 min read · nmap is a powerful network scanning tool used to discover hosts and services on a computer network by sending packets and analyzing the responses. It's widely used for network inventory, managing service upgrade schedules, and monitoring host or serv...
Join discussionJan 6 · 5 min read · scp (secure copy) is a command-line utility used to securely transfer files and directories between a local host and a remote host or between two remote hosts. It uses the Secure Shell (SSH) protocol for secure data transfer, encrypting the data duri...
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