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Linux - general
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linux kernel
how do i see what's in my kernel right now...
John M.
http://www.rockfloat.com/board/post/?id=33
April 19, 2002 @19:55
(Replies: 1)
setting up secondary dns on bind 9
I'm wanting to set up our name server so it will allow a secondary dns to "read" from it or however you say that, think this will work:
options {
directory "/var/named";
allow-transfer { 1.2.3.4; };
transfer-format many-answers;
}
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http://www.rockfloat.com/board/post/?id=252
April 19, 2002 @15:34
(Replies: 0)
dig is a really nice tool for dns stuff
I find dig to be very helpful when looking into dns issues... here are some examples:
dig @foo.com version.bind. chaos txt
dig foo.com ns @a.gtld-servers.net
John M.
http://www.rockfloat.com/board/post/?id=372
April 18, 2002 @00:51
(Replies: 0)
some set type options for nslookup
here are some valid set type commands for nslookup:
a - IP address
cname - Canonical name for an alias
hinfo - Host CPU and operating system type
mx - Mail exchanger records
ns - Name server record
any - Union of all records
so here'
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http://www.rockfloat.com/board/post/?id=259
April 16, 2002 @17:28
(Replies: 0)
how does tcpd (tcp wrappers) work
I think any program that's passed thru tcp wrappers will follow the hosts.allow and hosts.deny files...
but, if i add hosts.allow 1.2.3.4 and deny everyone else.. for the purpose of locking down ssh that runs thru tcp wrappers, will this also then
[...]
http://www.rockfloat.com/board/post/?id=427
April 12, 2002 @21:09
(Replies: 0)
Re: how do i see how much disk space is being used?
if you need to check disk usage on a particular file or folder, you can do this:
root# du -h /root/folder
-- or
root# du -h /root/folder/file
-- again, the -h makes it "human readable" so the output is converted to megabytes
John M
[...]
http://www.rockfloat.com/board/post/?id=433
April 03, 2002 @21:32
(Replies: 0)
is there a task manager for linux?
I want to check memory and processor usage and stuff.. or see what program is locked or whatever
John M.
http://www.rockfloat.com/board/post/?id=432
April 03, 2002 @21:28
(Replies: 0)
what is crontab and how does it work
a guy told me about crontab once but i'm not sure what it is
John M.
http://www.rockfloat.com/board/post/?id=32
April 03, 2002 @21:27
(Replies: 1)
how do i unpack a .tar.gz file
i can use winzip to open it.. but not sure how to unzip it on the linux box
John M.
http://www.rockfloat.com/board/post/?id=471
April 03, 2002 @21:26
(Replies: 1)
what's an easy way to view the contents of a file
I've seen some editors, but i just want to see the file real quick
John M.
http://www.rockfloat.com/board/post/?id=35
April 03, 2002 @21:25
(Replies: 0)
how do you find a file on a linux computer?
I need to edit this one file.. but i have no idea where it is!!
John M.
http://www.rockfloat.com/board/post/?id=456
April 03, 2002 @21:24
(Replies: 1)
Re: how do you get the floppy or cdrom to
I think there are several ways to do this, but the following works for me:
root# mount /mnt/cdrom
root# mount /mnt/floppy
-- now you can do
root# cd cp /mnt/cdrom/folder/file /opt/transfer/file
and to get the cd backo out.. you will
[...]
http://www.rockfloat.com/board/post/?id=469
April 03, 2002 @21:22
(Replies: 0)
Re: how do i see how much disk space is being used?
try this:
root# df -h
-- it will return disk usage in "human readable" form, so in megabytes rather than bytes
John M.
http://www.rockfloat.com/board/post/?id=431
April 03, 2002 @21:20
(Replies: 0)
Re: how do you test sendmail?
to test sendmail, do something like this (hit the enter key after each line fyi):
root# sendmail -vt
to: user@somedomain.com
from: user@somedomain.com
subject: bla, bla, bla
this is the body of the email
.
-- now you will watch sendm
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http://www.rockfloat.com/board/post/?id=430
April 03, 2002 @21:18
(Replies: 0)
Re: is there a way to see which users are logged in?
well, there are a couple of ways to see who's logged in at a particular moment in time. Here are two ways:
root# w
root# finger
both will return a list of users logged in. If you want to send them a message.. use the wall command:
root# wal
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http://www.rockfloat.com/board/post/?id=429
April 03, 2002 @21:14
(Replies: 0)
Re: how in the world do you use vi
yeah, vi can be hard to get used to. Let me share the very basics for getting stuff done. vi has two main modes:
1. command mode
2. edit mode
the former is used for saving, searching, formatting and stuff. the latter is for typing text. So, fi
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http://www.rockfloat.com/board/post/?id=428
April 03, 2002 @21:10
(Replies: 0)
Re: how do you change the system time
To update the system clock, do the following:
# date
Thu Feb 27 09:04:42 CST 2003
(If your date is wrong, set your date with this next command)
# date 022709042003
(date MMDDhhmmCCYY)
root# clock
root# date
-- you should now have the co
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http://www.rockfloat.com/board/post/?id=439
April 03, 2002 @20:56
(Replies: 0)
how do you test sendmail?
I just installed sendmail and it doesn't seem to be working, how do i test it?
thanks
John M.
http://www.rockfloat.com/board/post/?id=413
April 03, 2002 @17:24
(Replies: 2)
how in the world do you use vi
vi seems to confusing to use... any tips?
thanks,
John M.
http://www.rockfloat.com/board/post/?id=472
April 03, 2002 @17:20
(Replies: 1)
is there a way to see which users are logged in?
I'm trying to see who's logged in... and tell them to get out because I need to reboot or something.
thanks,
John M.
http://www.rockfloat.com/board/post/?id=453
April 03, 2002 @17:17
(Replies: 1)
