Comments for nixCraft

Comment on Logging to a centralized loghost from Router or other hosts by Alan Beard

Alan Beard — Fri, 10 Feb 2012 06:03:01 +0000

Please document how to, in syslog.conf, direct syslog messages from different hosts, eg. routers, to separate files.

Comment on My 10 UNIX Command Line Mistakes by Greywolf

Greywolf — Thu, 09 Feb 2012 21:18:46 +0000

On a SunOS/Solaris box, or anything with dynamically linked critical programs [cp, cat, tar, sh], if /dev/zero or /usr/lib/crt0.so vanishes, you’re screwed. /dev/zero is especially insidious, because, in their infinite wisdom, they decided to make mknod a dynamically linked executable, so you can’t even mknod it.

Comment on Download Fedora 14 CD / DVD ISO by xtine

xtine — Thu, 09 Feb 2012 18:32:14 +0000

Thanx alot for the infor. How can i check wheather my cpu is 32 or 64 bit

Comment on Download Ubuntu 11.10 (Oneiric Ocelot) CD ISO / DVD Images by Michael

Michael — Thu, 09 Feb 2012 16:15:08 +0000

Why?

Comment on Linux > More on USER ID, Password, and Group management by Panos

Panos — Thu, 09 Feb 2012 16:03:32 +0000

I have mistakenly create some zero-long-named groups in my Linux based Nas. How can I access through Windows and delete them?

Comment on Linux : How to run a command when boots up? by Davide Ganz

Davide Ganz — Thu, 09 Feb 2012 13:20:36 +0000

Very Useful!
Thanks for Sharing :)

Comment on 4 TB Hard disk by 2011 by jordan Soulos

jordan Soulos — Thu, 09 Feb 2012 13:03:12 +0000

boys i check cables in server room all day they have already made petrabytes in storage

Comment on How do I find out Linux Disk utilization? by soundar

soundar — Thu, 09 Feb 2012 12:55:26 +0000

where x = device

example : iostat -x -d sda 5

Comment on How do I Use Multiple Screens on One Terminal over ssh session? by Amernath

Amernath — Thu, 09 Feb 2012 10:11:46 +0000

Very useful one!

Comment on How to Install and Configure ProFTPD in RHEL / CentOS / Fedora Linux by miguel

miguel — Thu, 09 Feb 2012 10:03:20 +0000

Thank. Please note that

“To jail users to theirs respective home directories, add following to config file:
DefaulRoot ~
”
must be :
DefaultRoot ~
—-

As always, proftpd -t6 will help checking syntax.. ;)

Comment on Understanding UNIX / Linux file system by satyendra kumar

satyendra kumar — Thu, 09 Feb 2012 09:58:45 +0000

Dear sir,

I want to know that which type of file system in use in linux..

Please reply

Comment on How to use rsync for transferring files under Linux or UNIX by Deepa

Deepa — Wed, 08 Feb 2012 19:35:49 +0000

Hi,
I am doing a rsync between two servers. I have put the script in crontab file so that it runs automatically everyday at night. But the problem is that rsync stops once it encounters a large file. But, surprisingly, If I execute the same script from the CLI, it works perfectly right. Only, when it happens in the background via rsync, it gets stuck. Please advise what could be the issue. Do settings need to be changed somewhere.

Thanks in advance.
Deepa

Comment on Download of the day: IBM AIX 6 beta by MST700

MST700 — Wed, 08 Feb 2012 19:32:22 +0000

Don’t be a jerk, AIX beta should still be availible. If it isn’t all you have to do is tell the guy.

Comment on HowTo: Configure WordPress To Use A Content Delivery Network (CDN) by itmg

itmg — Wed, 08 Feb 2012 17:03:35 +0000

Great tips, thanks for sharing. This is something I wanted to setup

Comment on Openbsd install or add binary software package howto by Hendra

Hendra — Wed, 08 Feb 2012 13:16:42 +0000

export PKG_PATH=ftp://ftp.openbsd.org/pub/OpenBSD/5.0/packages/i386
I have do that, I want to install unzip, but I can’t. Sorry I’m Indonesian and very very newbie in UNIX.

Comment on RHEL: Linux Bond / Team Multiple Network Interfaces (NIC) Into a Single Interface by musa

musa — Wed, 08 Feb 2012 11:22:07 +0000

Hi everyone who are happy with this tutorial,

Would you kindly let me know if i should configure IPs (public) on my WAN interfaces of centos 5.5 if i need to bond them?…
this tutorial hasn’t explained it with some dummy IPs.
i am totally confused as which IPs to assign on WAN interfaces and which IP to assign to bond0 interface in such scenario.

Regards

Comment on Recover MySQL root Password by Yuleisa

Yuleisa — Wed, 08 Feb 2012 00:52:41 +0000

– Quote – My daaabtse is about 1GB, so I set my innodb_buffer_pool_size to 2GB– End Quote –Is that your daaabtse memory size or your daaabtse file size? Thanks

Comment on My 10 UNIX Command Line Mistakes by Michael Shigorin

Michael Shigorin — Tue, 07 Feb 2012 17:33:44 +0000

Just try that (not exactly that command but you’ll figure it out) in a virtual machine, then think of mmap’ed files, open handles, cached filesystem metadata.

On the bright side, on Linux at least one can salvage a (wrongly) deleted file at times by knowing it is still open by a running process, SIGSTOPping that process just in case, examining /proc/THAT_PID/fd/ symlinks and cat(1) the contents of the needed one, conveniently marked as “(deleted)”, into a safe place.

I’m not a kernel guy either, only fixed iso9660 perms back in 1999 or so for localhost :) but I know freebsd FUD when I see it, and if you failed to find a distro that works for you (like I did in 2001), don’t blame “linux” for it — it’s just not professional in the first place. Ну, не стоит уши под лапшу подставлять и дальше её тиражировать.

Back to topic: on Linux it might be safer to check /proc/mounts and not `mount` in case one has to doublecheck: I once had a trouble with a recently cloned hard drive after a reboot, blasting the wrong one with dd(1) after having missed the *real* mounts state (don’t remember the details but LABEL and UUID won’t help to differentiate between bit-per-bit copies, obviously). There’s a tendency to have /etc/mtab just symlinked to /proc/mounts though.

Comment on My 10 UNIX Command Line Mistakes by Valeri Galtsev

Valeri Galtsev — Tue, 07 Feb 2012 15:42:41 +0000

Hm…
with a little knowledge of unix one can realize that

rm -rf /

is _NOT_ as devastating as many think here it is (I would add that as unix certification exam question). Let me re- post here what I already posted:

“…
One thing I couldn’t buy as ultimately devastating though:
rm -rf /
- if I ever manage to do it as root on my *nix box I expect /bin, /boot, and part of /dev gone (and whatever else could be in / alphabetically before /dev on that box). Then the device hosting root filesystem will be deleted, and this will be end of my trouble. The rest: /home, /lib, /lib64, /sbin, /tmp, /usr, /var will stay intact. Other opinions?

Of course, you loose the system on the fly, but you can mount the partitions of the drive on another system, and you will see other filesystems mentioned above intact.

Comment on How do I find out what shell I’m using? by Victor

Victor — Tue, 07 Feb 2012 13:09:58 +0000

LOL, just what I was thinking. ^^