2008年 01月 03日 的归档
C中调用shell命令的方法 popen演示
以下是 popen.c
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#include <stdio.h> int main(){ FILE * fp; char str[1024]; if(NULL==(fp=popen("pwd","r"))){ return -1; }else{ printf("%s",fgets(str,1023,fp)); pclose(fp); } return 0; } |
编译运行的结果：
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lily@LLY:~/test$ gcc popen.c lily@LLY:~/test$ ./a.out /home/lily/test lily@LLY:~/test$ |
另如果只是要执行shell命令，而不管输出的话，有可以用system函数：
man system这么说：
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NAME system - execute a shell command SYNOPSIS #include <stdlib.h> int system(const char *command); DESCRIPTION system() executes a command specified in command by calling /bin/sh -c command, and returns after the command has been completed. During execution of the command, SIGCHLD will be blocked, and SIGINT and SIGQUIT will be ignored. |