Skip to main content

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...
Post a Comment

Ant in Food accidentely injested: Discussion with chatGpt

Query:
wht may happen if I accidently injest home alive red ant with water / milk / chapati / etc
ChatGPT said:

If you accidentally ingest a live red ant (like Solenopsis species or other common red ants) along with food or drink (like water, milk, chapati, etc.), here's what may happen:

🔹 1. Mild to No Reaction (most common):

  • Stomach acid usually kills the ant before it can do any harm.

  • In most healthy individuals, no reaction occurs — the ant is digested like any other protein.

  • You might not even realize it happened.

🔹 2. Local Irritation (less common):

  • If the ant is alive when it enters your mouth or throat, it may bite or sting:

    • This can cause a sharp pain, minor swelling, or a burning sensation in the mouth, lips, tongue, or throat.

    • Ant venom (e.g., formic acid or alkaloids in fire ants) may cause brief discomfort.

🔹 3. Mild Allergic Reaction (rare):

  • Some people may be allergic to ant venom and develop:

    • Itching, mild swelling, rashes.

    • Mild nausea or stomach discomfort.

🔹 4. Severe Allergic Reaction (Anaphylaxis) (very rare):

  • In rare cases, especially if you're highly allergic, symptoms might include:

    • Difficulty breathing

    • Swelling of the throat or face

    • Dizziness or rapid heartbeat

    • This is a medical emergency.

🟨 What To Do:

  • If no symptoms occur, no action is needed.

  • If you feel burning, swelling, or pain, drink water to wash down any remaining venom or parts.

  • If symptoms persist or worsen, consult a doctor.

  • If you have known insect venom allergies, monitor for signs of a severe reaction.

✅ Conclusion:

For most people, accidentally swallowing a red ant is harmless and digested normally. Discomfort, if any, is usually brief and mild.

You said:
And wht about common alive small home black ant (not big black ant["khota"])?
ChatGPT said:

If you accidentally ingest a small live black ant (the common household kind, not the big “khota” ants), here's what typically happens:

🔹 1. Usually Harmless (most common):

  • Your stomach acid will kill the ant quickly.

  • The ant will be digested like any other protein source.

  • No symptoms in most healthy individuals.

  • It’s very common and not dangerous.

🔹 2. Minor Discomfort (occasionally):

  • If the ant is alive and bites inside your mouth, lips, or throat, you might feel:

    • A tiny pinch, mild burning, or brief irritation.

  • Their bite is very weak and usually doesn’t break skin.

🔹 3. Mild Allergic Reaction (rare):

  • Some people may have mild sensitivity to ant saliva or body proteins:

    • Slight swelling in lips/tongue (rare)

    • Mild itchiness or discomfort

🔹 4. Severe Reaction (very rare):

  • Black ants (unlike red fire ants) don’t carry potent venom.

  • Severe allergic reaction (anaphylaxis) is extremely unlikely.

  • Only a concern if you have a serious insect allergy history.

✅ Summary:

AspectBlack Ant (small, common)
Stomach danger❌ None – digested normally
Bites/stings⚠️ Very mild or none
Allergy risk🟢 Very low
Medical concern needed?❌ Only if you feel unwell afterward

🟨 What You Can Do:

  • If you felt a bite or sting: rinse mouth, drink water.

  • If no symptoms: nothing needed.

  • If you feel swelling, difficulty breathing, or severe symptoms (rare): seek medical help.

In short: no need to worry — swallowing a small home black ant alive is usually harmless.

Comments

Post a Comment

If you have any doubts, please let me know.

Popular posts from this blog

Ubuntu Notes: Set up autossh as systemd useful-reminder commands

 sudo vim /etc/systemd/system/permanentAutossh.service ======================================== [Unit] Description=Keeps a tunnel to myOciFreeNat open After=network-online.target [Service] User=<username> Environment="AUTOSSH_GATETIME=0" ExecStart=/usr/bin/autossh -M 0 -q -N -o "ServerAliveInterval 60" -o "ServerAliveCountMax 3" -L 4322:127.0.0.1:5432 -i /<ssh_private_key_file_absolute_path> <username>@<ip_address> -p 22 [Install] WantedBy=multi-user.target ======================================== sudo systemctl daemon-reload sudo systemctl enable permanentAutossh sudo systemctl start permanentAutossh ================== sudo systemctl daemon-reload sudo systemctl restart permanentAutossh sudo systemctl status permanentAutossh ====================== sudo systemctl stop permanentAutossh sudo systemctl disable permanentAutossh sudo rm /etc/systemd/system/permanentAutossh.service
Post a Comment
Read more

syslog cpp programming: learning using chatGcp

  Introduction to Syslog C++ August 27, 2024 This conversation may reflect the link creator’s personalized data, which isn’t shared and can meaningfully change how the model responds. You said: I am new to syslog in cpp programming n just starting. Can you teach me ChatGPT said: ChatGPT Sure! syslog is a standard for logging system messages in Unix-like operating systems. It provides a way to send log messages to the system log, which can then be collected and analyzed by various tools. Here's a basic guide to get you started with syslog in C++: 1. Include the Necessary Header To use syslog , you need to include the syslog.h header: cpp Copy code # include <syslog.h> 2. Open the Connection to syslog Before sending log messages, you need to open a connection to the syslog system. This is typically done at the start of your program: cpp Copy code openlog ( "your_program_name" , LOG_PID | LOG_CONS, LOG_USER); "your_program_name" : A string representing ...
Post a Comment
Read more

Ubuntu - C++ Notes: Install & update boost c++ library from git (may contain some error in process mentioned below)

 Boost C++ Library Installation from git in ubuntu: 1. create a directory named boost in your desired location and go to that directory mkdir boost;cd boost; 2. clone boost recursively from git using command git clone --recursive https://github.com/boostorg/boost.git 3. cd boost; sudo ./bootstrap.sh; 4. sudo ./b2; 5. sudo ./b2 install; DONE! --------------------------- Boost C++ Library Update Verson from git in Ubuntu: 1. go to gitDownloads/boost directory cd gitDownloads/boost; 2. git pull; 3. git submodule update --recursive; 4. cd boost; sudo ./bootstrap.sh; 5. sudo ./b2; 6. sudo ./b2 install; DONE!
Post a Comment
Read more