Author: GWD Time: 2019.7.2
First, the course content:
1, asked: Enter the shell (command interpreter) and enter the string in the process
Answer:
1), shell application of the same name found under section one string to the PATH environment variable specified directory program;
2), and then execute it.
2, Q: command string to find the address of where?
A: There is also the default address specified address;
Second, learning points:
1, shell Description: command-line shell and often confusing two concepts, in many formal occasions represents the same concept, that is, the command interpreter, However, in the strict sense, but a command line interface for the user to input commands, which itself only accept input and pass commands to the command interpreter; the latter is the shell. In essence, is a shell program, the user inputs the command line, the shell runs in the background to the instruction code conversion command issued to the operating system.
Third, the code :( no)