如何从linux上使用C ++在libexpect中创建的FILE *读取stdout? [英] How to read stdout from a FILE* created with libexpect in C++ on linux?
问题描述
使用C ++我使用libexpect创建了一个FILE *:
FILE * fd = exp_popen(ssh root @ sunblaze) ;
我使用以下命令行:
exp_fexpectl(fp,exp_exact,password:,1,exp_end);
现在bash shell中的其他属性,我想获取文件的内容,
所以我必须运行命令 cat / port1 / port
,并得到所有打印在一个字符缓冲区。
我如何做?
fgets
似乎不起作用... <提前感谢
找到了一种方法,在创建连接后方法我是,shell是:
[root @ sanblaze〜]#
我使用以下命令向其写入命令:
fputs(echo LinkReset> / port4 / port\r,fp);
exp_fexpectl(fp,exp_exact,]#,1,exp_end);
使用grep读取文件内容:
fputs(cat / port4 / port | grep -w Mode\r,fp);
exp_fexpectl(fp,exp_exact,]#,1,exp_end);在做了上面的exp_buffer之后,
witch是一个全局变量,保存所有来自远程shell从最后一次exp_fexpectl运行,witch只意味着我的命令的输出。剩下的就是解析它。
Using C++ I created a FILE* using libexpect:
FILE* fd = exp_popen("ssh root@sunblaze");
I got to the command line using:
exp_fexpectl(fp , exp_exact , "password: " , 1 , exp_end);
Now the other posses in bash shell and I want to get the contents of a file there, so I have to run the command
cat /port1/port
and get all it prints in a char buffer. How do I do that?
fgets
doesn't seem to work...Thanks in advance
解决方案found a way, after creating the connection the way i did, the shell is:
[root@sanblaze ~]#
i write a command to it using for example:
fputs("echo LinkReset > /port4/port\r" , fp); exp_fexpectl(fp, exp_exact , "]# " , 1 , exp_end);
reading a files content with grep:
fputs("cat /port4/port | grep -w Mode\r" , fp); exp_fexpectl(fp, exp_exact , "]# " , 1 , exp_end);
after doing the above the "exp_buffer" witch is a global variable holds all the text that came from the remote shell from the last time "exp_fexpectl" ran, witch means only the output of my command. all that's left is to parse it.
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