从C ++使用tar创建压缩档案

Question

if(cmd == "zip")
        {
            string z = "tar cvf " + destination + "  " + file;
            system(z.c_str());
        }

I wanted to compress a file. to a given destination. But what is happening in my case is it makes a compressed file of destination. Like I am using it in Linux, and in Destination I give "Desktop" and in file I give filename. so it only makes Desktop compress file with no extension on Desktop.

Answer 1

You can do:

string z = "tar cvzf " + destination + "/" + file + ".tar.gz  " + file;

(the variables, if untrusted, should be sanitized, keeping in mind that system() invokes a POSIX shell)

Without the "z", tar creates a .tar file, but you have to specify the file name and extension yourself—it's not automatic.

With the "z", it creates a .tar.gz file (which is different from a zip file—a common tar doesn't do zip files).

There are other options. See tar(1) for more details.

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BTW, a call to the system function is technically not a system call .