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GDB is great. I definitely recommend checking out watchpoints as well, a very useful tool for monitoring how a variable changes over time.
GDB also has many good plugins - pwndbg has tons of features and UI improvements over stock GDB.
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gef
GEF (GDB Enhanced Features) - a modern experience for GDB with advanced debugging capabilities for exploit devs & reverse engineers on Linux
Using vanilla GDB is painful. As a bit of a shameless plug I recommend you check out GEF[1]. It's a large python script that extends GDB to make it a lot better to use. Notably it shows a lot of the state automatically every time the inferior stops. It's oriented around reversing and exploit development, but it definitely doesn't have to be used that way.
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Scout APM
Less time debugging, more time building. Scout APM allows you to find and fix performance issues with no hassle. Now with error monitoring and external services monitoring, Scout is a developer's best friend when it comes to application development.
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I can't believe no one has mentioned `gdb-dashboard` [1] yet! I use it extensively. [2]
Beyond that, I have recently learned how to write custom pretty printers for GDB. This saves a lot of screen space. I should probably update [2] soon with those new techniques.
GDB is powerful, useful, and after getting my start in IDE debuggers, including Visual Studio, I struggle whenever I have to go back.
[1]: https://github.com/cyrus-and/gdb-dashboard
[2]: https://gavinhoward.com/2020/12/my-development-environment-a...
