Implementing shell in C++
For Question1 make -f make_file.txt ./shell and the custom shell opens. Use --help command for all commands to get to know how to use the shell
For Question2 ./new.sh
For Question3 g++ -c multi_thread.cpp g++ -o multi multi_thread.o ./multi ls -R [source] [destn]
g++ -c multi_thread1.cpp g++ -o multi1 multi_thread1.o ./multi cp -R [source] [destn]
g++ -c multi_thread2.cpp g++ -o multi2 multi_thread2.o ./multi mv -R [source] [destn]