use dd-style fail to get '\' in linux

[Twinkle1087]

I made a samiliar use as the dd-style example.
the code is following, the project name is server:
int main(int argc, char **argv)
{
args::ArgumentParser parser("push the commands");
parser.LongPrefix("");
parser.LongSeparator("=");
args::HelpFlag help(parser, "HELP", "Show this help menu.", { "help" });
args::ValueFlagstd::string logs_dir(parser, "Path", " Logs Directory", { "-log", "-LogPath" });
try
{
parser.ParseCLI(argc, argv);
}
catch (args::Help)
{
std::cout << parser;
return 0;
}
catch (args::ParseError e)
{
std::cerr << e.what() << std::endl;
std::cerr << parser;
return 1;
}
catch (args::ValidationError e)
{
std::cerr << e.what() << std::endl;
std::cerr << parser;
return 1;
}
if (logs_dir)
{
std::cout << "if = " << args::get(logs_dir) << std::endl;
}
}
than I ues the command to started the program in windows(the exe name is server):
./server.exe -log=server_1\logs
the output is:
if = server_1\logs
Then I built a linux program in Ubuntu 20.04 LTS, I started the program :
./server -log=server_1\logs
the output is:
if = server_1logs
The '' has been disappered
So how can I fix this problem?
Thank you!

[Twinkle1087]

The \ symbol has been disappered as the third sentence from the bottom

[Twinkle1087]

well, in linux path use /

[Taywee]

That is probably actually your shell eating it, as backslashes are typically used as escape characters. If you surround the argument in single-quotes, the backslash won't get eaten (double quotes may or may not help, depending on your shell). But you're right, Linux paths do use forward slashes.