Process (present) : custom shell command line interpreter

---------------------------------Come on!

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There are few theories in this article, and of course the amount of code is very small, just the uploaded code.

#include#include#include#include#include#include#define MAX_ORDER 1024#define MAX_LINE 32int main(){//command inputchar cmd[MAX_ORDER];char* line[MAX_LINE]; //command parameter split//The shell script is always runningwhile(1){printf("\n[[email protected] my_shell]# ");fgets(cmd,MAX_ORDER,stdin); //readcmd[strlen(cmd)-1]='\0'; //solve\n//printf("%s\n",cmd);line[0]=strtok(cmd," ");int i=1;while(line[i]=strtok(NULL," ")){i++;}//Create a child process to callpid_t id=fork();if( id == 0 ){//child executesexecvp(line[0],line);// who to execute and how to execute}int status=0;pid_t ret=waitpid(id,&status,0); //At this point the parent process just needs to waitif(ret > 0){printf("exit code:%d\n",WEXITSTATUS(status));}}return 0;}

 

The final code is the paragraph.

Good luck~