Question

我尝试使用popen从c程序执行我的bash脚本（ tes02.sh ）。但是当我运行我的程序时，我收到了消息：./tes02.sh: not found 这是程序：

 #include <stdio.h>

#define LINE_BUFSIZE 128

int main(int argc, char *argv[])
{
    char line[LINE_BUFSIZE];
    int linenr;
    FILE *pipe;

    /* Get a pipe where the output from the scripts comes in */
    pipe = popen("./tes02.sh", "r");
    if (pipe == NULL) {  /* check for errors */
        perror(argv[0]); /* report error message */
        return 1;        /* return with exit code indicating error */
    }

    /* Read script output from the pipe line by line */
    linenr = 1;
    while (fgets(line, LINE_BUFSIZE, pipe) != NULL) {
        printf("Script output line %d: %s", linenr, line);
        ++linenr;
    }

    /* Once here, out of the loop, the script has ended. */
    pclose(pipe); /* Close the pipe */
    return 0;     /* return with exit code indicating success. */
}

我的脚本目录是：/home/pi 我应该进入目录吗？如果是的话，我该怎么办呢... 谢谢

Answer 1

我会首先检查当前目录中是否存在该文件：

if ( 0 != access( "./tes02.sh", F_OK ) )
{ 
    fprintf ( stderr, "File tes02.sh does NOT exist in curdir\n" );
    return -1; // return code - normally I return negative codes for errors
}
/* Get a pipe where the output from the scripts comes in */
pipe = popen("./tes02.sh", "r");
if (pipe == NULL) {  /* check for errors */
    perror(argv[0]); /* report error message */
    return 1;        /* return with exit code indicating error */
}

（......其余的节目......）

c / popen中的bash无法找到我的脚本

1 个答案: