• If popen fails, do an error exit.

    如果popen失败,则进行出错退出。

    youdao

  • Caution: using pipe is complex compared to popen !

    警告:使用pipe比使用popen复杂!

    youdao

  • Popen is implemented using pipe , fork , and exec .

    popen是使用pipe 、fork和exec实现的。

    youdao

  • This is done with the system call popen(), which can open to a pipe to another process, either for reading or writing.

    这是用系统调用popen()完成的,它打开到另一个进程的管道以用于读或写。

    youdao

  • It shows appropriate use of some system calls and library functions from c, including fopen, fclose, access, setvbuf, perror, strerror, and popen.

    它演示了对一些系统调用和c库函数的适当使用,其中包括fopen、fclose、access、setvbuf、perror、strerror和popen。

    youdao

  • For complete flexibility, in Unix-like systems with a popen function, you can pre-process the file with text processing utilities before it is passed into the plot command.

    为了获得更完全的灵活性,在具有popen函数的unix类系统中,在将文件传送给plot命令之前,可以使用文本处理实用程序对文件进行预处理。

    youdao

  • Actually, you can still redirect or pipe stderr, but not stdout, since there will not be any standard output — it's being internally piped to the lp process using the popen function.

    实际上,您仍然可以对标准错误使用重定向或管道命令,但不能对标准输出使用,因为没有任何标准输出—正在内部使用popen函数由管道将它输送至lp进程。

    youdao

  • This feature is implemented using the popen system call, which allows one process to open a pipe to another process, either for output or input. In this case we open a pipe to the command.

    这一特性是用popen系统调用实现的,该系统调用允许一个进程打开到另一个进程的管道,将管道用于输出或输入。

    youdao

  • This feature is implemented using the popen system call, which allows one process to open a pipe to another process, either for output or input. In this case we open a pipe to the command.

    这一特性是用popen系统调用实现的,该系统调用允许一个进程打开到另一个进程的管道,将管道用于输出或输入。

    youdao

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