我创建了一个shell,它在我使用system(1)时有效,但规格说不适用。 我想在最后使用execvp,我并不太确定如何去做。任何帮助的机会,将不胜感激。execvp和我;我怎样才能让它为我工作?
代码 - >
char *token = NULL;
char line[LINE_MAX];
char *line2 = NULL;
char *tempraryToken = NULL;
char *command = NULL;
char args[LINE_MAX];
int numSpaces = 0;
int i;
int strleng = 0;
while(1)
{
if(scanf(" %[^\n]", line) > 0)) //prune off the newline char
token = strtok(line, ";") //break up different commands
//on the same line by ;
do{
strleng = strlen(token);
for(i = 0; i < strleng; i++)
{
if(token[i] == ' ') numSpaces++; //find out if there are spaces
}
i = 0;
if(numSpaces >= 1) //if there are spaces
{
line2 = token;
temporaryToken = strtok(line2, " ") //break by spaces
do{
//if it's before any spaces
if(i == 0){
command = temporaryToken;
}
else strcat(args, temporaryToken);
strtok(NULL, " ");
while (temporaryToken != NULL);
}
execvp(command, args); //this could be any of the exe commands
//that's what I'm looking for
token = strtok(NULL, ";") //move to next token
while(token != NULL);
}
你的问题到底是什么? – DevSolar 2012-08-08 10:37:48
在进程完成之前使用fork()和waitpid不是更好吗? – stetro 2012-08-08 10:41:19
我很害怕这些问题的措辞 - 我正在寻找正确的exe命令在这里使用。 – 2012-08-08 12:07:32