The 'p' command does what it always does, explicitly telling sed to print out the line, since we are in '-n' quiet mode.

因为是处于' - n '安静方式，所以' p '命令还是完成其惯有任务，即明确告诉sed打印该行。

youdao

Perl's -p option tells it to read and process each line from standard input and print the results to standard output.

Perl的- p选项告诉它读取和处理标准输入中的每行内容，并将结果打印到标准输出。

youdao

You'll also notice that we've replaced the 'd' command with the 'p' command, which as you might guess, explicitly commands sed to print the pattern space.

您还会注意到，我们用' p '命令替换了' d '命令，如您所猜想的那样，这明确要求sed打印模式空间。

youdao

OK, in fact if we look at this, if I say, print of p, it prints it out in that form.

好，实际上如果，我们来看看这个，如果我输入，p的显示。

麻省理工公开课 - 计算机科学及编程导论课程节选