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Saturday, December 1, 2012
Friday, December 23, 2011
Thursday, November 3, 2011
NUL Output Redirection and Helpful Scripting Commands for DOS Based Command Line Scripting with Error Seperation
Re-Post from: http://www.j2eeblogs.blogspot.com/2007/07/nul-2.html
Saturday, July 14, 2007
>nul 2>&1
Listen to the article >nul 2>&1 as MP3
This was a truth that i didn't know whats the string >nul 2>&1 means in batch scripting , even though i used it in many batch scripts :-) . Thanks to Dark for explaining it in the MSFN blog.
It redirects standard output, STDOUT, (1>nul), and standard error, STDERR, (2>nul), to nul.
STDOUT, channel 1, is the default therefore doesn't require the channel number stipulating, (>nul).
You can use
>nul 2>nul
which will redirect each channel to its own nul
Or you can use
>nul 2>&1
which redirects STDERR to the same nul as the STDOUT channel.
As for the (&), (&&)
& separates multiple commands on one command line.
&& causes the command following this symbol to run if the command preceding the symbol is successful.
Saturday, July 14, 2007
>nul 2>&1
Listen to the article >nul 2>&1 as MP3
This was a truth that i didn't know whats the string >nul 2>&1 means in batch scripting , even though i used it in many batch scripts :-) . Thanks to Dark for explaining it in the MSFN blog.
It redirects standard output, STDOUT, (1>nul), and standard error, STDERR, (2>nul), to nul.
STDOUT, channel 1, is the default therefore doesn't require the channel number stipulating, (>nul).
You can use
>nul 2>nul
which will redirect each channel to its own nul
Or you can use
>nul 2>&1
which redirects STDERR to the same nul as the STDOUT channel.
As for the (&), (&&)
& separates multiple commands on one command line.
&& causes the command following this symbol to run if the command preceding the symbol is successful.
Saturday, October 15, 2011
IPv6, Failover, Quantum Computing and the Evolution of the Public Internet
ADCOM Corp. - Advanced Computers and Networking: IPv6, Failover, Quantum Computing and the Evolution of the Public Internet
Post to EtherealMind.com awaiting Moderation: http://etherealmind.com/ip-addressing-ha-links/trackback/
In response to your post update on High Availability Network Addresses, it would be nice if there was some form of super-symmetry amongst the various vendors when it comes to following the latest RFC's and following the proper methods amongst ICANN/ISC/ARIN-RIPE etc so that there will be a decent form of compatibility amongs not only internet addressing, but the next generation of VPN and IP Telephony Devices.
Private IP-Addressing has continued to be a pre-existing problem especially amongst older hardware where it was not possible to establish VPN connections due to NAT and IP Address Space conflicts.
It is unfortunate that vendors still cling to the 192.168.1.0/24 and 192.168.0.0/24 address spaces on the most abundant number of non-enterprise level routing devices on the current generation of the Internet (Circa 1986/rom ARPA-NET/DARPA). At least the Internet2 Project has forced requirements on network design for availability and minimum link speeds. Internet2 is basically what the current public internet was when it started up, a University/Research Based Network (ref: internet2.org).
I forsee that the Private IPv4 Address Spaces 192.168, 172.16, and 10.0 will continue to be used in the mainstream of most networks for many years to come. Even though IPv6 is now officially deployed, there is just too much hardware out there that relies on IPv4 technologies. If you include the most deployed device in the world of IP, the PC, even current plans to migrate from IPv4 to IPv6 could take many decades.
Society actually depends on the IPv4 networks. Some Examples of Legacy IPv4 Hardware still in use include: Public Works and Utilities, Nearly all legacy (pre-fiber GPON) analog/digital Telephone Exchange Switches, Public Works, and so much more as they were deployed without exhaustion foresight.
The IPv4 network basically makes it possible for a government or community to operate on any level. Consider even the 1980's and 1990's era DDS/56k/Analog/T1 Fixed-Wire interconnects that still exist today in order to maintain our base-level Communications Infrastructure, of which without the internet could not exist. The communications infrastructure is held together by dedicated terminals and fixed ipv4 based links of which without, we would be living in the early 20th Century.
If you don't already have connectivity, you may see the next generation soon. Now it is easily possible to have Gigabit Ethernet directly to the Public Internet, even in the size of today's conventional cablemodem like the Motorola ONT1400GTI or ONT1120GE(4x1GbE). Same size as a cable modem, but instead there is a Single-Mode fiber drop connected instead of RG-6 COAX.
In the networks of the future, the Fiber GPON/LPON's like the Motorola AXS1800 and Motorola AXS2200 GPON OLT are the most significant advancements in that they have actually been deployed, put into service in many localities. With 10GbE Internet Uplinks, Not only are they capable of IPv6, they are the first Head-Ends that have been able to replace the AT&T 5ESS and Nortel DMS-100 switches that have been in use for decades amongst the NANPA.
In this new age of communications it would seem that Motorola is one of the kings of the future, thanks to the cost saving R&D of Corning, Tellabs and others.
Some more Reference Links:
Motorola EMEA Video FTTP Brochure [Static Direct Link] (PDF): http://www.motorola.com/staticfiles/Video-Solutions/FTTP/pdfs/FTTPEMEA_Brochure.pdf
Motorola MD26000 24 Port Desktop/Rackmount ONT MDU (24 Seperate WAN Ports on a single fiber drop for both Multi-Dwelling-Units as well as Business IP Connectivity with disparate dedicated ports capable of 64 mac addresses per wan port, VLAN's, etc.) Rackmount MDU ONT with 1Gbps Backhaul (Same size as a standard rackmount switch): http://www.motorola.com/staticfiles/Video-Solutions/Products/Broadband-Access/Optical-Line-Terminals/ONT-Chart/datasheet/Datasheet_MD22000-MD24000-MD26000.pdf
WikiPedia on Quantum Computing: http://en.wikipedia.org/wiki/Quantum_computer
MIT, Technology Review, The Physics arXiv Blog, The First Quantum Computer: http://www.technologyreview.com/blog/arxiv/27183/
Any questions let me know on Facebook/LinkedIn via a search for adcomcorp/adcomcorp@msn.com or visit my company's page at http://www.adcomcorp.com
Trackback URL: http://etherealmind.com/ip-addressing-ha-links/trackback/
Blog Trackback URL: http://blog.adcomcorp.com/
Post to EtherealMind.com awaiting Moderation: http://etherealmind.com/ip-addressing-ha-links/trackback/
In response to your post update on High Availability Network Addresses, it would be nice if there was some form of super-symmetry amongst the various vendors when it comes to following the latest RFC's and following the proper methods amongst ICANN/ISC/ARIN-RIPE etc so that there will be a decent form of compatibility amongs not only internet addressing, but the next generation of VPN and IP Telephony Devices.
Private IP-Addressing has continued to be a pre-existing problem especially amongst older hardware where it was not possible to establish VPN connections due to NAT and IP Address Space conflicts.
It is unfortunate that vendors still cling to the 192.168.1.0/24 and 192.168.0.0/24 address spaces on the most abundant number of non-enterprise level routing devices on the current generation of the Internet (Circa 1986/rom ARPA-NET/DARPA). At least the Internet2 Project has forced requirements on network design for availability and minimum link speeds. Internet2 is basically what the current public internet was when it started up, a University/Research Based Network (ref: internet2.org).
I forsee that the Private IPv4 Address Spaces 192.168, 172.16, and 10.0 will continue to be used in the mainstream of most networks for many years to come. Even though IPv6 is now officially deployed, there is just too much hardware out there that relies on IPv4 technologies. If you include the most deployed device in the world of IP, the PC, even current plans to migrate from IPv4 to IPv6 could take many decades.
Society actually depends on the IPv4 networks. Some Examples of Legacy IPv4 Hardware still in use include: Public Works and Utilities, Nearly all legacy (pre-fiber GPON) analog/digital Telephone Exchange Switches, Public Works, and so much more as they were deployed without exhaustion foresight.
The IPv4 network basically makes it possible for a government or community to operate on any level. Consider even the 1980's and 1990's era DDS/56k/Analog/T1 Fixed-Wire interconnects that still exist today in order to maintain our base-level Communications Infrastructure, of which without the internet could not exist. The communications infrastructure is held together by dedicated terminals and fixed ipv4 based links of which without, we would be living in the early 20th Century.
If you don't already have connectivity, you may see the next generation soon. Now it is easily possible to have Gigabit Ethernet directly to the Public Internet, even in the size of today's conventional cablemodem like the Motorola ONT1400GTI or ONT1120GE(4x1GbE). Same size as a cable modem, but instead there is a Single-Mode fiber drop connected instead of RG-6 COAX.
In the networks of the future, the Fiber GPON/LPON's like the Motorola AXS1800 and Motorola AXS2200 GPON OLT are the most significant advancements in that they have actually been deployed, put into service in many localities. With 10GbE Internet Uplinks, Not only are they capable of IPv6, they are the first Head-Ends that have been able to replace the AT&T 5ESS and Nortel DMS-100 switches that have been in use for decades amongst the NANPA.
In this new age of communications it would seem that Motorola is one of the kings of the future, thanks to the cost saving R&D of Corning, Tellabs and others.
Some more Reference Links:
Motorola EMEA Video FTTP Brochure [Static Direct Link] (PDF): http://www.motorola.com/staticfiles/Video-Solutions/FTTP/pdfs/FTTPEMEA_Brochure.pdf
Motorola MD26000 24 Port Desktop/Rackmount ONT MDU (24 Seperate WAN Ports on a single fiber drop for both Multi-Dwelling-Units as well as Business IP Connectivity with disparate dedicated ports capable of 64 mac addresses per wan port, VLAN's, etc.) Rackmount MDU ONT with 1Gbps Backhaul (Same size as a standard rackmount switch): http://www.motorola.com/staticfiles/Video-Solutions/Products/Broadband-Access/Optical-Line-Terminals/ONT-Chart/datasheet/Datasheet_MD22000-MD24000-MD26000.pdf
WikiPedia on Quantum Computing: http://en.wikipedia.org/wiki/Quantum_computer
MIT, Technology Review, The Physics arXiv Blog, The First Quantum Computer: http://www.technologyreview.com/blog/arxiv/27183/
Any questions let me know on Facebook/LinkedIn via a search for adcomcorp/adcomcorp@msn.com or visit my company's page at http://www.adcomcorp.com
Trackback URL: http://etherealmind.com/ip-addressing-ha-links/trackback/
Blog Trackback URL: http://blog.adcomcorp.com/
Sunday, September 18, 2011
Friday, May 27, 2011
NirSoft Blog Link
NirBlog - Link to Blog of Nirsoft.net PC Software Utilities for IT Pros...
Officeial Site: http://www.nirsoft.net
Officeial Site: http://www.nirsoft.net
Thursday, May 12, 2011
Tuesday, December 29, 2009
Yelp Page Link
I added myself a while back to Yelp, http://adcomcorp.yelp.com in case anyone is on there...
Saturday, July 18, 2009
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