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21%
Protect Your Servers with Nmap
23.07.2012
Home »  Articles  » 
 
.13.134.52):            Not shown: 994 filtered ports            PORT    STATE  SERVICE VERSION            22/tcp  open   ssh     OpenSSH 4.3 (protocol 2.0)            25/tcp  closed smtp            53/tcp  open   domain  ISC BIND 9.3
21%
Gathering Data on Environment Modules
10.09.2012
Home »  HPC  »  Articles  » 
to logfiles, and it’s pretty simple to use: [laytonjb@test1 ~]$ logger "This is a test" ... [root@test1 ~]# tail -n 2 /var/log/messages Aug 22 15:54:47 test1 avahi-daemon[1398]: Invalid query packet. Aug 22 17
21%
VAX emulation with OpenVMS
18.07.2013
Home »  Archive  »  2013  »  Issue 15: What’...  » 
Ole Houen, 123RF
attach xq eth0 21 22 set cpu idle 23 boot cpu The first step in the OpenVMS installation is to write a so-called "save set" of the operating system from the CD to the hard drive: backup dua3:vms073
21%
Using rsync for Backups
07.01.2014
Home »  Articles  » 
 
. The approach used by Rubel has several advantages. The first is that the most recent backup, backup.0 , always contains the full backup and backup.1 through backup. < N >, where <N> is the last incremental
21%
Listing 2
21.08.2012
Home »  HPC  »  Articles  »  Warewulf 4 Code  » 
 
.6 M Is this ok [y/N]: y Downloading Packages: (1/5): apr-1.3.9-3.el6_1.2.i686.rpm                                            | 128 kB     00:00 (2/5): expat-2.0.1-11.el6_2.i686.rpm
21%
Getting the most from your cores
11.10.2016
Home »  Archive  »  2016  »  Issue 35: Persi...  » 
Lead Image © ktsdesign, 123RF.com
interval and add to dictionary 38 interv = 0.5; 39 d['interval'] = interv; 40 41 # Number of cores: 42 N = psutil.cpu_count(); 43 d['NCPUS'] = N; 44 45 cpu_percent = []; 46 epoch
21%
ClusterHAT
10.07.2017
Home »  HPC  »  Articles  » 
with the original Raspberry Pi Model A, ranging from two to more than 250 nodes. That early 32-bit system had a single core running at 700MHz with 256MB of memory. You can build a cluster of five RPi3 nodes with 20
21%
Netcat – The Admin’s Best Friend
20.08.2012
Home »  Articles  » 
 
examplehost.tld 22 If firewalling is in place and you need to originate your connection from a specific IP address to open a port, entering # nc -s 1.2.3.4 examplehost.tld 8181 will connect to examplhost
21%
Cross-Vendor IPsec
25.10.2011
Home »  Articles  » 
 
/24 endpoint2=192.168.2.0/24 action=requireinrequireout auth1=computerpsk auth1psk="test123" qmsecmethods=esp:sha1-3des qmpfs=dhgroup2 If you need to create a large number
21%
Operating systems for the cloud and containers
14.08.2017
Home »  Archive  »  2017  »  Issue 40: Lean...  » 
Lead Image © leeavison, 123RF.com
than five years old. The first public version 0.3.0 was released in October 2011; version 0.3.5 is the most recent. The source code is released under the GNU General Public License version 2 (GPLv2

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