Get hostname from linux system

[Raadush]

Hi,
I have one question because Im definitely missing something. I need to save system $HOSTNAME into QString. When I run echo $HOSTNAME from terminal I get the result. But from Qt when I try getenv("HOSTNAME") I get nothing. I tried the same with USERNAME and everything works fine. Then I tried print QProcess::systemEnvironment() and HOSTNAME variable wasnt in the result. It seems like my linux system does not export HOSTNAME for other applications or what? Is there a way to get HOSTNAME easily into QString?

Thanks

[ChrisW67]

Relying a environment variables is a bad idea anyway.

Open Qt Assistant (or the Help panel in Qt Creator), go to the index tab and type "hostname"... the manual is your friend.
Alternatively, since you started out with non-Qt functions, gethostname()

[Raadush]

Thanks. I came across QHostInfo before, but when I tried to include it, compiler didnt find it. I think i must add path into gmake, but i dont know how If you can point me the right direction? gethostname works fine, thanks, but i'd like more using QHostInfo

[Spitfire]

// in your pro file
QT       += network

// in your pro file
QT       += network

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[PeterLLLLLL]

It is very easy to ues it ....Creat a username...haha .....