Installing jre-7u25...tar.gz error "bash: etc/profile: No such file or directory"

[unknown24]

hi,iwant to install jre-7u25-linux-i586.tar.gz in my Ubuntu 13.04 (lubuntu). I follow the instruction for installation from here http://www.wikihow.com/Install-Oracl...n-Ubuntu-Linux. On step 14, I've got an error when entered this command :

./etc/profile

The error is :

bash: etc/profile: No such file or directory

But if skipped that and go to step 16. The result when i entered "java -version" is

java version "1.7.0_25"
Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
Java HotSpot(TM) Server VM (build 23.25-b01, mixed mode)

It's little different result in "build 23.1-b03" that showed in the wikihow installation guide.
How can I fix that? If i skipped step 16, is there a problem when using java? please help me,

[BreezyBrooke]

sudo add-apt-repository ppa:webupd8team/java && sudo apt-get update && sudo apt-get install oracle-java7-installer

There, that installs Java 7. No fuss, and is updated regularly with each Java 7 release!

What you have at the moment, and what was shown in terminal was openjdk-1.7. TheOpen Source Java for Linux.

[unknown24]

Thank for your replying, but reason i use tar.gz is to have installation offline.
If i want to reinstal my OS no need to use internet connection again to install JRE.
I have limited internet connection.

[steeldriver]

I agree it's not the best way to install the Oracle jre

However, your specific error is likely because you copied #14 wrongly - it's not

./etc/profile

(meaning "try to execute a command called 'profile' in a directory 'etc' relative to the current directory") it's

. /etc/profile

(note the space!) meaning "re-read ('source') the /etc/profile file that you just modified"

I haven't read the whole thing but /etc/profile will get re-read anyway next time you login so as far as I can tell step #14 really only there so you get an 'instant' check of whether your changes took effect

[oldos2er]

Moved to Absolute Beginners.

[unknown24]

excellent,,, there is no error found,,,
thanks a lot,,,