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16%
Protect Your Servers with Nmap
23.07.2012
Home »  Articles  » 
 
your source IP address but not for nefarious use, # nmap -S 3.3.3.3 12.34.56.78 then by port range, with no pings to avoid immediate detection and with operating system detection (-A): # nmap -P0 -p1
16%
Give your servers the once over with Nmap
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© ragsac, 123RF.com
, in case that triggers a firewall's ruleset: # nmap -P0 12.34.56.78 Then, run the UDP and SYN (Stealth) scans concurrently, as mentioned previously: # nmap -sUS 12.34.56.78 With the use of the -f
16%
Building a virtual NVMe drive
25.03.2020
Home »  Archive  »  2020  »  Issue 56: Secur...  » 
Lead Image © lassedesignen, 123RF
---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- -------- /dev/nvme0n1 152e778212a62015 Linux 1 21.00 TB / 21.00 TB 4 KiB + 0 B 5.4.12-0 You are now able to read and write from and to /dev
16%
Creating Virtual SSDs
21.01.2020
Home »  HPC  »  Articles  » 
             SN                   Model                                    Namespace Usage                      Format           FW Rev ---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- -------- /dev/nvme0n1     152e778212a62015     Linux                                    1         21.00  TB /  21.00  TB     4 KiB +  0 B     5.4.12-0 You are now able to read and write from and to /dev/nvme0n1
16%
Assess USB performance while exploring storage caching
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Lead Image © Lucy Baldwin, 123RF.com
disk reads: 1306 MB in 3.00 seconds = 434.77 MB/sec federico@cybertron:~$ sudo hdparm -W /dev/sdb /dev/sdb: write-caching = 1 (on) federico@cybertron:~$ sudo hdparm -W 0 /dev/sdb /dev/sdb: write
16%
Warewulf Cluster Manager – Administration and Monitoring
21.08.2012
Home »  HPC  »  Articles  » 
just two nodes: test1, which is the master node, and n0001, which is the first compute node): [laytonjb@test1 ~]$ pdsh -w test1,n0001 uptime test1: 18:57:17 up 2:40, 5 users, load average: 0.00, 0.00
16%
Visualizing time series data
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
Lead Image © Maxim Kazmin, 123RF.com
} 'a'..'c'; 12 13 $s .= $one; 14 $s .= $two; 15 $s .= $three; 16 17 my $temp; 18 for (my $i=0; $i<12288; $i++) { 19 $temp=substr($s,length($s)-1,1); 20 $s=$temp.$s; 21 $s = substr($s,0 ... 22
16%
Storage system with OpenSolaris and Comstar
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Aleksandr Fomenkov, 123RF.com
255 sec 63> 05 /pci@0,0/pci15ad,1976@10/sd@0,0 06 1. c8t1d0 S-1.0-10.00GB> 07 /pci@0,0/pci15ad,1976@10/sd@1,0 08 # 09 # zpool create mypool c8t1d0 10 # zpool status -v 11 pool ... 0
16%
Container Apps
02.10.2017
Home »  Articles  » 
 
can bring your own build infrastructure or use ours. When you install a snap for the first time, another small snap is also pulled down (at the time of writing, it’s around 85MB), known as the ... Canonical’s Snapcraft (Snappy) package manager creates self-contained applications that work across Linux distributions. We show you how to install, publish, and run a simple snap.
16%
Using rsync for Backups
07.01.2014
Home »  Articles  » 
 
/laytonjb/TEST/SOURCE/ backup.0/ [laytonjb@home4 TEST]$ ls -s total 12 4 backup.0/ 4 backup.1/ 4 SOURCE/ [laytonjb@home4 TEST]$ du -sh 19M . [laytonjb@home4 TEST]$ du -sh SOURCE/ 9.2M SOURCE/ [laytonjb@home4 TEST]$ du -sh

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