Extracting Audio and Video Metadata in Android using MediaMetadataRetriever
Extract video duration, resolution, audio album art, and frame thumbnails in Android using MediaMetadataRetriever for local files and remote HTTP URLs.
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Install and Uninstall Android Application ( APK ) using ADB
Following shell script does, check if android application is installed find an apk path if android application … Read more
Understanding execution and debugging of C program using ltrace
As we seen in previous post “Understanding Very Minimal C Program and its execution in Ubuntu Linux” … Read more
Understanding Linux Signals with simple C program
Signals are a limited form of inter-process communication (IPC), typically used in Unix, Unix-like, and other POSIX-compliant … Read more
Identify / Test file types in Linux using C program stat API
The file mode, stored in the st_mode field of the file attributes, contains two kinds of information: … Read more
Use local mirror to build yocto file system from internal server
As we have seen in “Configure yocto to download from local mirror to save bandwidth” one way … Read more
Resolve : undefined reference to `pcap_lookupdev’
If you are trying to compile any network packet capturing related program, there are higher chances you … Read more
C program – UDP Server to print UPNP Packets
This posts provides the C program with UDP server, which listens on UDP Multicast group 239.255.255.250 and … Read more
Capturing Wi-Fi Raw Packets in C via AF_PACKET Raw Sockets on wlan0
Write a C packet sniffer in Linux using AF_PACKET raw sockets to capture, decode, and analyze Ethernet, IP, TCP, and UDP frames on wlan0.
Monitoring Linux File System Events in C with inotify System Calls
Write a C program in Linux using inotify_init and inotify_add_watch to monitor directory file creation, modification, and deletion events in real time.
Direct Screen Drawing in Linux: A Hands-on Guide to Framebuffer Programming in C
Program Linux framebuffer devices (/dev/fb0) in C: query screen resolution via ioctl, map video memory with mmap, and render raw RGB pixel buffers.
Converting Windows BMP Images to Raw 16-Bit RGB565 Binary for Embedded Displays
Write a C program in Linux to parse Windows BMP image headers, convert 24-bit BGR pixels into raw 16-bit RGB565 binary data for embedded LCD displays.
C program to verify the integrity of a file with md5 checksum
Most of the times we downloaded some files from the internet, and we also see people provides … Read more
Capture and analyze network packets using tcpdump and tshark
We can use tcpdump to capture the packets whereas tshark to analyse the packets. Using above help, … Read more
Sniffex – C program to Capture wifi packets using libpcap
libpcap provides functions for user-level packet capture, used in low-level network monitoring. Following program captures the packets … Read more
Solved: adb no permissions error while connecting Android Device to PC
If you have tried to connect any new device to already setup ubuntu where adb was working … Read more
Restarting the ADB Server Background Daemon to Resolve Connection Errors
Learn how adb kill-server and adb start-server work, resolve port 5037 conflicts, and fix ADB device connection issues in Android Studio.
Flutter not detecting device / “flutter devices” No devices detected
If we tried to run “flutter devices” command to identify make sure we are ready to connect … Read more
Adb reconnect
“adb devices” command on host first starts the adb server and then tries to connect to Android … Read more
Use adb shell when multiple devices are connected
Android adb command for host, provides a command line option if you want to connect to one … Read more
Connect adb shell over Wireless / Wifi / Ethernet / TCP network
NOTE: for below article, replace IP address whereever required with your IP address If you want to … Read more
Shell script for switching wifi channel using hopping
Using the below script we tries to connect to different wifi channels of hotspot using iwconfig command. … Read more
Triggering the Linux Kernel OOM Killer Manually to Analyze Process Selection Scores
Learn how to manually trigger the Linux Kernel Out-Of-Memory (OOM) killer via SysRq, inspect /proc/pid/oom_score, and protect critical processes.
Concatenate strings in Python
When you are working with strings in python, at some point in time, you would definitely need … Read more