g++:tldr:4250e

This command is used to compile and link multiple source files written in C++ and create an executable file.

Here is a breakdown of the command:

1. g++ is the GNU Compiler Collection command for compiling C++ programs.
2. -c flag is used to compile the source files individually into object files (.o files). It indicates that the source files should not be linked yet.
3. ${path-to-source_1-cpp path-to-source_2-cpp ---} represents the paths to the source files that need to be compiled. Replace these placeholders with the actual paths of your C++ source files. These files will result in corresponding object files after compilation.
4. && is a command separator that allows executing the next command only if the previous one succeeds.
5. The second part of the command after && is used to link the object files and create an executable.
6. -o ${path-to-output_executable} specifies the output file name and path for the executable file that will be generated. Replace ${path-to-output_executable} with the actual path and name you desire for your executable.
7. ${path-to-source_1-o path-to-source_2-o ---} represents the object files generated in the previous step (.o files) that need to be linked. Replace these placeholders with the actual paths of your object files.

Once you replace the placeholders with the actual paths and execute this command, it will compile all the source files specified, generate corresponding object files, and finally, link those object files into an executable with the specified name and path.