gdb:tldr:543b8

This command is used to debug a program using the GNU Debugger (gdb). Here is an explanation of the various components:

• gdb: It stands for GNU Debugger. It is a powerful command-line tool used for debugging programs in various programming languages, including C, C++, and others.
• -c: This option specifies that the file following it is a core dump file, which is a file containing the memory image of a crashed or terminated program.
• ${core}: This is a placeholder for the name or path of the core dump file that you want to analyze with gdb. You need to replace ${core} with the actual file name or path.
• ${executable}: This is a placeholder for the name or path of the executable file for which the core dump was created. You need to replace ${executable} with the actual file name or path.

Combining all these components, the gdb -c ${core} ${executable} command tells gdb to analyze the specified core dump file using the specified executable file. It allows you to inspect the state of the program at the time of the crash or termination, examine variables, stack traces, and step through the code to identify the cause of the issue.