Linux
Read guide Top Open Source Linux Performance & Debugging Tools
Master open-source Linux performance profiling and debugging tools: trace system calls with strace, profile CPU with perf, and find memory leaks.
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Linux
Read guide How to Benchmark USB Flash Drive Read/Write Speed on Linux
Measure USB flash drive write and read speed on Linux: benchmark block performance using dd count=1000 bs=1M status=progress and hdparm.
Linux Kernel
Read guide How to Test Linux Framebuffer Drivers in C (mmap /dev/fb0)
Test Linux kernel framebuffer drivers in C: open /dev/fb0, fetch screen dimensions via FBIOGET_VSCREENINFO ioctl, and paint pixels via mmap().
Linux Kernel
Read guide How to Enable DRM Driver Debug Logging in Linux
Enable Direct Rendering Manager (DRM) kernel debug logging: set drm.debug=0x1f boot parameter, inspect dmesg, and debug display stack output.
Linux
Read guide How to Get File Size in C Using POSIX stat System Call
Get exact file byte sizes in C on Linux: use stat() system call and inspect st_size from struct stat without opening file descriptors.
Software Development
Read guide Enums in C: Enumeration Syntax, Values, and State Machines
Define enumeration constants in C: assign integer values to enum, implement finite state machines, and compare enum vs #define constants.
Software Development
Read guide sprintf and sscanf in C: String Formatting and Parsing
Format and parse strings in C: master sprintf(), sscanf(), buffer bounds checking with snprintf(), and integer/float string conversions.
Software Development
Read guide C Preprocessor Macros: #define Directives and Include Guards
Master C preprocessor macros: define constants, write conditional header guards #ifndef, inspect gcc -E preprocessing, and compare macros vs inline functions.
Software Development
Read guide Parameterized Macros in C: Arguments and Precedence Gotchas
Define parameterized macros in C using #define: master expression expansion, parenthesize macro arguments to prevent operator precedence bugs.