respond 3 Ted, we're continuing our discussion we started in linux here Look what happened when I tried your commands. And look at how much space there is now and compar it to the space that there was on here a couple of days ago which I documented in the linux topic. I probably outht to move that linux top cstuff here in the next post. barton:~ su Password: barton# rm -f /home/var rm: /home/var: is a directory barton# rmdir -f /home/var rmdir: illegal option -- f usage: rmdir directory ... barton# rmdir /home/var barton# mv /var /home/ ln -s /home/var /var mv: /var/run/printer: Operation not supported mv: /var: Device busy barton# barton# barton# rm -f /home/var rm: /home/var: is a directory barton# cd /home barton# ls ab5ks charles home1 mirna submit alice child internic moira tcarlin allan cidneye janc mouse tedchong ally crosby jdaniel nike teklay amy davros ka6atn paul terry awork deanna kaffeine pcmattic tmp baygolf des ldarj pelles tvpc beverly dutchman main richard var bhg geoff manual rus wave bob gfriz matt scotth wes bubbi golftravel max scottk www candace great mhessel spif zen cchang greg michaelt stacey barton# df Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/sd0a 9727 5459 3781 59% / /dev/sd0f 705727 134991 535449 20% /home /dev/sd0h 198335 177773 10645 94% /usr /dev/sd0g 63535 49486 10872 82% /var barton# Now 82% is ok,, but threre's just so much more available on home.

Topic 2 of 11: 'Linux' Response 8 of 15: Paul Terry Walhus (terry) Sat, May 31, 1997 (11:48) 7 lines barton:~ df we're real short on hard disk space right Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/sd0a 9727 5459 3781 59% / /dev/sd0f 705727 78737 591703 12% /home /dev/sd0h 198335 177773 10645 94% /usr /dev/sd0g 63535 57297 3061 95% /var barton:~ Topic 2 of 11: 'Linux' Response 9 of 15: Ted Chong (tedchong) Sun, Jun 1, 1997 (09:42) 4 lines Terry, which directory is short of space on barton? /home is only 12% used, still have about 600MB left :-) Topic 2 of 11: 'Linux' Response 10 of 15: Paul Terry Walhus (terry) Mon, Jun 2, 1997 (08:20) 11 lines /var and /usr are both real full. I need to add to /var because that's where a bunch of mail keeps overflowing and filling up the hard drive. I could use a lot more room there. I'm thinking about plugging in a 3 gb Quantum and setting it up as the second drive on www. Any tips on upgrading that system (step by step procedure). I guess the first would be to plug it in and run BSDI's disk formatting program. Then link it to /var as a filesystem. Topic 2 of 11: 'Linux' Response 11 of 15: Ted Chong (tedchong) Mon, Jun 2, 1997 (09:15) 9 lines For short run you can link /var to /home since /home has 600MB of space. To do this, just run run on shell: mkdir /home/var ; ln -s /home/var /var make sure /var is not there in the first place. Topic 2 of 11: 'Linux' Response 12 of 15: terry (terry) Mon, Jun 2, 1997 (11:22) 1 lines cheech Topic 2 of 11: 'Linux' Response 13 of 15: Paul Terry Walhus (terry) Mon, Jun 2, 1997 (11:27) 13 lines I did this: barton# mkdir /home/var ; ln -s /home/var /var barton# df Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/sd0a 9727 5459 3781 59% / /dev/sd0f 705727 77061 593379 11% /home /dev/sd0h 198335 177773 10645 94% /usr /dev/sd0g 63535 57773 2585 96% /var barton# Do I need to reboot for it to take effect now? Topic 2 of 11: 'Linux' Response 14 of 15: Ted Chong (tedchong) Mon, Jun 2, 1997 (19:33) 20 lines Re: /var on barton Terry, I just did an 'du' on /var at barton and found below directories has eaten the most space: 17818 ./www 60920 ./account 22142 ./log 8218 ./webdocs You don't have to reboot barton. What I found you have not link /var to /home/var, to to this, see below step-by-step: 1. rm -f /home/var 2. mv /var /home/ 3. ln -s /home/var /var This will make a link from /var to /home/var Topic 2 of 11: 'Linux' Response 15 of 15: Paul Terry Walhus (terry) Tue, Jun 3, 1997 (09:20) 5 lines OK I'll try that now. Check and see if this works ok?

The problem I'm having now, Ted, is that when I open elm to read my mail it shows that I have no mail because it's still looking for /var/mail and my mail is now in /home/mail or /home/mail/var or something. How do we fix this?

barton:/var su Password: barton# cd / barton# mv var vartemp mv: var: Device busy I tried this because you said to: su cd / mv var vartemp ln -s /home/var /var And after this, doing an ls -l / to see /var -> /home/var Why Device busy??? Should I try again?

As it stands now, I go to elm and see no mail because it's over in the new directory.

Now it says: barton# mv var vartemp mv: rename var to vartemp/var: Not a directory barton# What next Ted?

All solved already, should be able to get email from barton

Cool deal, Ted to the rescue again. Thank you for helping the Spring!

Now back to BSDI unix, how can one disable ICMP packets? What I mean is disable someone from the Internet ping your host....

We had a ping atttack once and we tracked down the ping bomber and had his account terminsated. It was senseless . Why pick on little Spring? Some firewalls and deal with ping attacks. And you might search omse the the Interneet security websites. There may be something about his in our security topic. These are also calle Denial of Service attacks.

Ping attacks happen everywhere, they don't spare small host. I have looked into my router's manual and found something like "Disable ICMP redirects" and may be it gave me some clue...

Wow. What a change: barton:~ df Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/sd0a 9727 5482 3758 59% / /dev/sd0f 705727 138039 532401 21% /home /dev/sd0h 198335 177863 10555 94% /usr /dev/sd0g 63535 1 60357 0% /var Now, Ted, will you please tell us exactly how to do this step by step so we can learn from this? Good job, Ted! Now, do you know how to restart our realaudio server which has stopped. I know, but I left my notes at home today. We run realaudio for our http://www.childrenstory.com website.

Re: df and ln It's a simple task, I went to /var (at barton), became root, then move all files and directories to /home/var by using "mv /var /home", then make symbolic links by using the ln command to each directory in /home/var, for example: ln /home/var/spool /var/spool will link /var/spool to /home/var/spool. The actual way is to make /var point to /home/var but due to some files used by the system it can't be done without a reboot. more info at "man ln" For readAudio, let me take a look tomorrow (it's 12am now in Singapore).

The Realaudio thing is a hot issue. Email ces@well.com and ask him how to restart it.

Dave Thaler set up a "most recent postings" are today and I'm testing it. Take a look at the "main menu" and you should see this post, or you will if it's still recent.