~~
For a true offline/online solution look into Armory and I believe a similar solution is available from Electrum as well.
~~
Not trying to deter you, but since you say you're not familiar with Linux, have a look at other options and learn about them.
since i am currently using electrum, i created another one on my linux and it was easy and successful. i think i am going to use that for cold storage.
i mostly want to become more familiar with linux, that is why i chose this option. and as for bitcoin-core i just wanted the main client that's all.
You will need to be online to do this, so connect your computer to Wi-fi or ethernet. ~~
thanks for the help, but the whole reason for what i am doing is to create an offline wallet, with me just copying a wallet installation file there.
@knightdk, It's not clear from OP that he downloaded a source tarball, he may have the binaries in there and just not know how to run them, he only says that ./bitcoin-qt returns an error (he doesn't say what error). Ie, he may not need to build, he may just need to make his binary execurable.
Also, "make install" probably requires root elevation.
@OP:
But more seriously, you have to actually post what the error messages are if you want someone to help you. I have to say it again and again on these forums: there are people who know how to read those messages even if you don't---post them here if you want real help. Saying "I got an error" is too vague.
sorry about that, you are right.
i followed
these steps except for the "wget" part which i downloaded tar.gz file from bitcoin.org and transferred it with my USB flash drive and after typing "./bitcoin-qt" i get:
Ubuntu 14.4.2bash: ./bitcoin-qt: No such file or directory
and also "$chmod +x bitcoin-qt" returns:
an screenshot:
https://i.imgur.com/ebYGnW2.jpg