查找文件不通过文件名

5毛党党员

原帖由 yylogo 于 2008-12-17 19:43 发表
楼上，请你教我popen怎么用。
学习Ing....:wink: :wink:
我是新手.

名字记错了 是_popen，下面是msdn的例子

// crt_popen.c /* This program uses _popen and _pclose to receive a &nbsp;* stream of text from a system process. &nbsp;*/ #include <stdio.h> #include <stdlib.h> int main( void ) { &nbsp;&nbsp;&nbsp;char   psBuffer[128]; &nbsp;&nbsp;&nbsp;FILE   *pPipe; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/* Run DIR so that it writes its output to a pipe. Open this &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;* pipe with read text attribute so that we can read it &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;* like a text file. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/ &nbsp;&nbsp;&nbsp;if( (pPipe = _popen( "dir *.c /on /p", "rt" )) == NULL ) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exit( 1 ); &nbsp;&nbsp;&nbsp;/* Read pipe until end of file, or an error occurs. */ &nbsp;&nbsp;&nbsp;while(fgets(psBuffer, 128, pPipe)) &nbsp;&nbsp;&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;printf(psBuffer); &nbsp;&nbsp;&nbsp;} &nbsp;&nbsp;&nbsp;/* Close pipe and print return value of pPipe. */ &nbsp;&nbsp;&nbsp;if (feof( pPipe)) &nbsp;&nbsp;&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;printf( "\nProcess returned %d\n", _pclose( pPipe ) ); &nbsp;&nbsp;&nbsp;} &nbsp;&nbsp;&nbsp;else &nbsp;&nbsp;&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;printf( "Error: Failed to read the pipe to the end.\n"); &nbsp;&nbsp;&nbsp;} }

yylogo

哦,谢谢..

SybaseLU

How does grep command can retrieve context of non-text files like PNG, MP3, or MP4?

Fixend

原帖由 SybaseLU 于 2008-12-17 23:43 发表
How does grep command can retrieve context of non-text files like PNG, MP3, or MP4?

grep只支持文本文件。
你先回答我，对于PNG，你用什么作为key来查找？
你只能用某种方式来标记这个PNG，而且是可读的。