Help with Acer Aspire one -new linux user!

[Tigerjilly2]

Being new to linux I made a few mistakes and have lost facility to add and remove programs as well as my wireless manager in the last day! Oops! May have removed part of yum (but i thought I'd downloaded it - so appears I may have lost part of system)
Need to repair system from a flash drive or reinstall yum maybe??(tried putting yum on flash but not sure how to get it across in linux) or somehow recover system to regain add and remove option and wireless manager... bit lost here, any advice really welcome.... getting there slowly

[Tigerjilly2]

Can I just thank 'farslayer' and ', segmentation_fault' who helped with USB recognition and memory stick issues 2 days ago. For some reason my forum password and email was later not been recognised, no reply yet from admin so had to create new login. Tigerjilly2.
USB sorted ok thanks. Whilst trying to sort issue with Flash drive I removed yum and now have issue above.... Learning by experiment! Painful! Any ideas how I can get yum back on without network, from flash drive or solve issue re no network manager or 'add and remove' option... stuck here! Thanks

[Tigerjilly2]

Just to say Network for some reason sorted itself. Online ok now
Still when run 'yum' in terminal window get 'invalid command' where used to get script so have lost something here, tried reinstall yum but not sure what i'm doing so need good linux advice
1. What is yum?
2 What does it do?
3. Is it part of operating system?
4. if it was removed would that result in my losing 'add and remove programs' under system tag?

Thanks

[arochester]

Google is your friend!

Yum automated software installation and update for Red Hat Linux

Yellow dog Updater, Modified - Wikipedia, the free encyclopedia

[Tigerjilly2]

Thankyou 'arochester' for galloping to my rescue

Google is definately a good friend! I will read through all carefully.

OK edit here a bit later... I can't get yum installed still. Not having ever worked in doss I'm finding terminal window a hard learning curve, but determined.

I have yum download in 'my downloads' but not installed on machine, this is the bit I'm stuck at:-
Go to the folder where you downloaded yum. Most likely cd /home/your-user-name/. If you can see the file with ls, you are on the right place. I can type cd /home but don't know how to find the 'downloads folder from there?

any helpful advice in how to get download installed on machine, I typed rpm -q yum and it said not installed...

Be patient with me