files: cleanup /and directory structure question

[pjottrr]

organized working......

that is what i'm used to in windows, but how does it work in Linux?

let me start my story
i have a 20 gb hard disk, 4 gb is for windows, the other parts are for backtrack.

as in, it looks like this:
root@bt:~# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hda2 14G 7.6G 5.4G 59% /
/dev/hda1 4.0G 3.7G 309M 93% /mnt/hda1
/dev/hda2 14G 7.6G 5.4G 59% /mnt/hda2

and i use about 1.5-2 gb swap
root@bt:~#

everything works fine after upgrading to slackware 12, but now i have quite a full hard disk, as you should know, the only thing installed is the os itself
it takes up 7.6 gb, so in my opinion there should be a lot that is useless there

so this post is mainly o ask where to look for, what can be deleted without question, and actually i have no clue about how Linux works in directory structures...

for now, ik know the following:

/dev = devices directory , for every component --> stay off it, don't mess around there

/usr/src... same story stay off it else you kill your os

/root --> my own shit, everything in there can be deleted..

/ all the others

with all the others i'm a bit confused, for my windows usage it's easy because i worked with it my whole life...

for Linux file systems it's not.

so i was wondering if anyone could explain some basic newbie stuff about it ( or link to...)

that would help me in my understanding of Linux file system and how it works.

for instance:

/usr/doc

what should i do with it? is it part of every application? can it be deleted?
it takes up 500mb , so i find that quite some information...

who can give an explain about how this all works?


kind regards

peter huiskens

The netherlands



edit:

i wanted to add that i have worked with linux a lot,( as well debian, slackware, suse, and ubuntu ( i know ubuntu is also debian based) but never as my main os, so i never questioned it before.

but for me , i really miss the essence of how the os works...

and also i am aware i should know this... but hey, i'm just trying to find my way in the linux world
hands why i posted in newbie earea

[purehate]

To be honest thats not alot of room for a main OS. The usr docs file is pretty useless but there may be some sym links in there to software. the link is probably for the MAN page. What I do is use a software called kleensweep. The trouble with it is it will wipe you out if you are not careful. I do it once amonth or so but every file it asks to delete must be checked but it works very well.

[pjottrr]

well that's a good way to start, i only guess it will take me weeks to get all the files checked ( firs time)

but i will give it a try,

thnx for the advice...

and any common advice about the filesystem?


oh and btw , it's my main os on my 3 year old laptop