Help installing QT on Linux Ubuntu 12.04 LTS

[Bresser]

Ok so I dowloads QT5 from their website and it gave me a .run file. I went into terminal and

chmod u+x qt.run
./qt.run

then it said no marker found, stopped after 1.00MiB
can anyone tell me why it is doing this.

[2F4U]

Did you post the commands exactly as you really entered them? Since there is a blank in qt.run which shouldn't be there.

[Bresser]

yes that is exactly how I entered it except i used

cd

to get into the Downloads directory.

[steeldriver]

did you check the md5sum of the download? that error sounds like the kind of thing you'd get with an incomplete archive

[Bresser]

I will be honest bud. I have no idea what a md5sum is

[steeldriver]

$ cd ~/Downloads
$ md5sum qt-linux-opensource-5.0.2-x86-offline.run 
f4ff26e65e7229e514c72e2eaf6743a0  qt-linux-opensource-5.0.2-x86-offline.run

and compare the long string of hex digits with the value given in the (info) link on the relevant Qt download page e.g.

http://download.qt-project.org/offic...run.mirrorlist

If they are not the same then something went wrong with the download