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Nov 18th, 2006

System function, output to file

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Ok so I understand how to use the system function, and how to output to a file. How do I pipe the output of say system("last") to a file?
system() returns an int, so if I mystream << system("last") it will put an int in the file. I need to intercept the output going to the screen(cout?) and put it in the file (mystream? or can I do this in the last command with some parameters?)

Thanks

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Nov 18th, 2006

Re: System function, output to file

If I correctly understand what you say would that be:

C++ Syntax (Toggle Plain Text)
int temp = system("last");
mystream << temp;
cout << temp;
int temp = system("last");
mystream << temp;
cout << temp;

Last edited by Anonymusius; Nov 18th, 2006 at 3:19 am. Reason: BBcode

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Nov 18th, 2006

Re: System function, output to file

do it just like you would from the command line.

C++ Syntax (Toggle Plain Text)
system("dir > myfile.txt");
system("dir > myfile.txt");

Last edited by Ancient Dragon; Nov 18th, 2006 at 8:55 am.

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Nov 18th, 2006

Re: System function, output to file

Thanks that got it. I didn't know that one but I do now. Appreciate the help.

Click to Expand / Collapse Quote originally posted by Ancient Dragon ...

do it just like you would from the command line.
C++ Syntax (Toggle Plain Text)
system("dir > myfile.txt");
system("dir > myfile.txt");

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