[SOLVED] ls Command Problem

[rajd3r]

Hello,
I have just started my "adventure" with Linux and i have a problem. I've tried everything but i couldn't finish my examples.
Here they are:
1) Using ls command find all files in /etc which have got 4 or more letters ....
I've tried
ls -d /etc/????
But it only shows words with 4 letters (but no more) ...

2) Using ls command find files in /etc which penultimate letter is small
I have no idea how to do this. I've tried
ls -d /etc/?[a-z]? but it will only work for word with 3 letters ...

3) Using command Find files in /etc which 3 letter is Capital
I don't know how to do this for word which has f.e 4 or more letters ...
ls -d /etc/??[A-Z] /etc/???[A-Z] - but how to do this "general" - when we don't know how many letters has the word ... ANd other problem is when i type [A-Z] - Debian doesn't recognize Capital letter from this range ... only small ...
THanks in advance for help/advices
rajd3r

[atreyu]

Hello and welcome!

Is this a homework question? If so, they are against Forum Rules. However, we can still give you helpful advice. Here's some now: Check out grep. Hint: the '.' character matches any character.

[rajd3r]

It's not exactly homework - doesn't matter
I understand and yes, hints will be very helpful - i didn't expect "ready answer"
I'll try sth with grep.
Thanks for help.
rajd3r

[rajd3r]

1) Using ls command find all files in /etc which have got 4 or more letters ....
I've tried
ls -d /etc/????
But it only shows words with 4 letters (but no more) ...

Ok i think it works when i type:
ls -d /etc/????*

atrey: The only problem is that i have to do this without grep Only ls -d command /etc/.....
rajd3r

EDIT: OK i solved the problem. You can close.
Thanks for advices
rajd3r

[atreyu]

EDIT: OK i solved the problem. You can close.

Great! For the sake of others coming to this thread later, (and to satisfy my own curiosity), can you post your solution?