Run an external program and read its output

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Hello,

I'm designing a little software to use at home and I ran into a problem.

The server side needs to run cd to change the current directory and also ls to get the list of files and directories in the current directory.

The point is, I have absolutely no idea how to do it.

Can anyone help me out please?

Posted 1-Nov-10 6:09am

Ippo343

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markkuk · Answer 1 · 2010-11-02T09:22:00

Solution 2

Running the cd command with system() or some similar method won't change the current directory of the calling process. You should use the chdir()[^]/opendir()[^]/readdir()[^]/... functions or the boost::filesystem[^] library instead of external programs.

Posted 2-Nov-10 9:22am

markkuk

Nish Nishant · Answer 2 · 2010-11-01T06:48:00

Solution 1

Haven't programmed in Linux in a while, but you should be able to use the C system() function. See http://www.opengroup.org/onlinepubs/000095399/functions/system.html[^]

The simplest way to parse the output of an ls command is to redirect output to a text file, and then parse that.

Posted 1-Nov-10 6:48am

Nish Nishant