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$ ip route show
default via 192.168.1.1 dev eth0 192.168.1.0/24 dev eth0 proto kernel 10.0.0.0/24 via 192.168.1.20 dev eth0
$
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ADB CommandsOpen technology index
65 entries02AndroidOpen technology index
37 entries03Linux, OS Concepts and NetworkingOpen technology index
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30 entries05Linux Host, Ubuntu, SysAdminOpen technology index
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Fastboot Says “No Permissions”? Diagnose USB Before Editing udevADB Commands
Existing libraryA fastboot permission error is fixable, but only after you know Linux can see the bootloader. This diagnostic path separates USB, mode, tool, group, and udev-rule failures without normalizing sudo fastboot.
Who Is Really Logged In to This Linux Machine?Basic Linux Commands
Existing libraryThe who command can settle a tense “is anyone still using this server?” moment—provided you understand what its session records can and cannot prove.
Let the Linux tree Command Explain a DirectoryLinux Commands
Existing libraryTurn an unfamiliar directory into a readable map with tested tree commands for depth, filtering, metadata, symlinks, and machine-readable output.
Find the Right Files on Linux Without Fear of the ResultLinux
Existing libraryBuild predictable Linux find expressions for names, types, sizes, and file contents, then inspect every match safely before taking action.
Safely Rename Parts of Filenames and File ContentLinux
Existing libraryRenaming `memory_map.c` to `memory_mapping.c` and changing identifiers inside source files are separate operations. This guide previews both, handles unusual filenames, refuses collisions, keeps backups, and makes rollback practical.
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Field guideLinux, OS Concepts and Networking
61Difference between Spinlock and Semaphore
Spinlocks Spinlocks assume the data you are protecting is accessed in both interrupt-handlers and normal kernel code. … Read more
Field guideCommands and Packages
62Compile JSON-C – JSON implementation in C
JSON-C implements a reference counting object model that allows you to easily construct JSON objects in C, … Read more
Field guideADB Commands
63Analyse android booting using Bootchart
Bootchart provides CPU and I/O load breakdown of all processes for the whole system. It doesn’t require … Read more
Field guideADB Commands
64Enable and disable Bluetooth using adb commands
To enable & disable Bluetooth using below adb commands needs your device to be rooted or if … Read more
Field guideADB Commands
65Adb shell screenrecord
If you want to take Screen Shot of your device, refer post “How to Capture Screenshot in … Read more
Field guideMultimedia
66What is MPEG – DASH
DASH is the name used to refer to the MPEG Dynamic Adaptive Streaming over HTTP specification – … Read more
Field guideCommands and Packages
67Play raw PCM voice/audio files using ffplay on Ubuntu
The microphones in Android or other mobile devices captures raw PCM sample with certain bit rate and … Read more
Field guideCommands and Packages
68Identify IP Address’s of all devices in a network
Sometimes someone from within your network starts consuming lot of bandwidth and you just needed to identify … Read more
Field guideLinux, OS Concepts and Networking
69Difference between Mutex and Semaphore
Besides the better readability, the code for mutex is smaller and slightly faster than the semaphore implementation. … Read more
Field guideCommands and Packages
70Install Chromium depot_tools on Ubuntu / Linux
Chromium depot_tools are the git extensions, which gives additional features. The Chromium depot_tools suite contains many git … Read more
Field guideGit
71Top Git Commands Every Developer Should Know
If you are working with git, you should know some commands which are mandatory and basics for … Read more
Field guideBluetooth driver
72Turn ON and Turn OFF Bluetooth from command line
Rfkill is a tool for enabling and disabling wireless devices. Using “rfkill list” command we first check … Read more
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