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How to use gdb in Ubuntu Terminal

Here's a practical, minimal guide for using GDB in Ubuntu terminal — from launching to setting breakpoints and navigating your code. 🧰 Step 1: Compile with Debug Symbols Use -g and disable optimizations ( -O0 preferred for debugging): bash Copy Edit g++ -g -O0 -o myprog myprog.cpp 🚀 Step 2: Launch GDB bash Copy Edit gdb ./myprog You'll see a (gdb) prompt. 🎯 Step 3: Set Breakpoints You can set breakpoints in three main ways : ✅ a. At a function gdb Copy Edit (gdb) break main ✅ b. At a specific file and line gdb Copy Edit (gdb) break myprog.cpp:42 ✅ c. At a method in a class gdb Copy Edit (gdb) break MyClass::doSomething If the symbol is mangled (C++), GDB usually demangles automatically, especially if compiled with -g . ▶️ Step 4: Run the Program gdb Copy Edit (gdb) run 🧭 Step 5: Navigate Command Meaning next or n Step over current line step or s Step into function call finish Run until current function returns continue or c Continue until...

Notes: Inverter purchasing calculations for home

 Take a list of items that will run in inverter like 2fans, 1 LED tubelight, 1 laptop, 2 LED TV, etc Now calcullate sum of their power e.g 2*60+1*20+100+2*100 WH=440 WH Now add 25% to above power sum e.g 440*125%=550WH Then multiply it by power factor (most case it's 1/0.8) e.g 550/.08=687.5 WH For every inverter has its own effeiency say 90%,80%, etc Therefore, inverter power that has to be purchased = 687.5/90%=763.888 VA Above is how to calculate inverter power that has to be purchased. ---- Now comes how to choose battery power Batter power (VA) =  Home Load * Backup (hrs)/Battery Vold = 687.5WH*2hr/12amp = 114.58 --- This is how you do calculations for purchasing invertor ========================= Bibliography

Ubuntu Notes: Solve E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem when trying to update ubuntu

This the problem you face when you try to upgrade or update ubuntu using command line, you get this message. Again when you run 'sudo dpkg --configure -a'  command you get error message like  dpkg: error: parsing file '/var/lib/dpkg/updates/0019' near line 0:  newline in field name '#padding' --- To solve this run command as follows cd /var/lib/dpkg/updates && sudo rm -rf <refNo>; sudo dpkg --configure -a; Like in above question case run command as follows cd /var/lib/dpkg/updates && sudo rm -rf 0019; sudo dpkg --configure -a; == Thats all & problem will be solved

21 Amazing Hacks That Make Healthy Lifestyle Easier

21 Amazing Hacks to Make Healthy Lifestyle Easier Sitting in AC & Feeling Dehydrated: AC sucks moisture from atmosphere & then from our bodies. To prevent this place potfull of water in the room & then turn the AC on. Don't peel of skin of potato, sweet potato, pumpkin, cucumber before cooking them: Their peel is super rich in vitamins & minerals. Then what to to for pesticine? For this you can wash them in baking soda solution for 10-15 minutes. This will save your time & effort; also give you extra nutrition. Not sure if vender have served you fresh sugarcane juice? Sugarcane Juice Property Fres...

Notes - PostgreSql pgAdmin4: How to solve error when trying to login

To solve this issue Clear browser cookie, refresh page. This is how I solved this issue in my case