Screen is a text window manager. It allows you to open several virtual windows from one text console. You can easily switch between windows using keyboard commands. One of the strongest feature of screen is decoupling the virtual windows from the console. In simple terms, you can leave a program running in a virtual window and log off and then re-attach to the same session later. Here is how you do it.
After logging into the machine, run type in command "screen". Screen will present the license, hit enter to continue. After this the first virtual window has been created and you can run your program. To navigate the session use the following key combinations:
1. To create a new virtual window and switch to it - ^ac
2. To switch to previous window - ^ap
3. To switch to next window - ^an
4. To see a list of windows - ^a"
5. To see a list of available commands - ^a?
6. To detach from windows - ^ad
7. To re-attach to previous session type "screen -r".
^ means hold down control key and then type the commands.
These are a few frequently used commands. A more detailed tutorial is here.
Saturday, August 04, 2007
Sunday, July 29, 2007
URIBL Blues
URIBL.com is a service that maintains a anti-spam black hole list.
According to "About us" on their site...
"URIBL lists domains that appear in spam, NOT where they were sent from. Our lists are intended to be used with antispam software to help TAG emails as spam. We do not BLOCK. If you are being blocked by someone because you are on our list, take it up with the person blocking you, not us!"
About black.uribl.com: "This lists contains domain names belonging to and used by spammers, including but not restricted to those that appear in URIs found in SPAM. This list has a goal of zero False Positives. This zone rebuilds frequently as new data is added."
On June 15th, 2007, microwiz.net, which belongs to me and is non-commercial as of today, was listed in black.uribl.com. URIBL was contacted requesting to provide evidence of spam but the request was denied by Mr. Alex Broens, indicating that the site (microwiz.net) being blank was in suspicious NS and no other information was given. After a few email transactions with Mr. Broens, it was deduced that that the URIBL service was using manual controls. Probably it induced human errors. Although the domain was de-listed because of incapacity of proving that the site microwiz.net did engage in emitting spam but no evidence was provided, why the site microwiz.net was listed in the RBL.
Listing innocent site microwiz.net indicates that the goal of zero false positives is not being adhered to. There maybe more innocent sites listed in black.uribl.com that I don't know about.
Conclusion:
According to "About us" on their site...
"URIBL lists domains that appear in spam, NOT where they were sent from. Our lists are intended to be used with antispam software to help TAG emails as spam. We do not BLOCK. If you are being blocked by someone because you are on our list, take it up with the person blocking you, not us!"
About black.uribl.com: "This lists contains domain names belonging to and used by spammers, including but not restricted to those that appear in URIs found in SPAM. This list has a goal of zero False Positives. This zone rebuilds frequently as new data is added."
On June 15th, 2007, microwiz.net, which belongs to me and is non-commercial as of today, was listed in black.uribl.com. URIBL was contacted requesting to provide evidence of spam but the request was denied by Mr. Alex Broens, indicating that the site (microwiz.net) being blank was in suspicious NS and no other information was given. After a few email transactions with Mr. Broens, it was deduced that that the URIBL service was using manual controls. Probably it induced human errors. Although the domain was de-listed because of incapacity of proving that the site microwiz.net did engage in emitting spam but no evidence was provided, why the site microwiz.net was listed in the RBL.
Listing innocent site microwiz.net indicates that the goal of zero false positives is not being adhered to. There maybe more innocent sites listed in black.uribl.com that I don't know about.
Conclusion:
- URIBL will list your site if it is parked or blank!!
- No evidence will be provided as they are "not in feedback loop"
- There will be human errors in listings as the submission controls are manual.
- Decisions whether to list the site or not *can* be biased as it is processed by human brain
- Inoscent sites can and may be listed
- Expect indescent phrases / remarks like "WTF?" when communicating with uribl staff
Saturday, October 08, 2005
New (vintage) Radio
Kenwood TM-401A
There is a new (vintage) addition to my shack - Kenwood TM401B. TM-401B is a 440 MHz Amateur Radio rig. As soon as I got it, I soldered the power-pole connectors so that it can be powered up in my shack.
I gave it a 12V power and I got no display!! I thought that it is dead, but after connecting an external speaker and reducing the squelch, I got white noise. Audio finally!! I tried to reseat the display board connectors but no help!!
I Measured the backup battery voltage and it was 0.11V :-( concluded that the backup battery (BR2032) was dead! Fortunately I had a few with me. I soldered one in place, after removing the dead one. Still no display!! I opened the bottom cover and tried to reseat the display board connectors but still no display :-(
I opened the bottom cover and and found a reset switch. I depressed it and voila! there was the display 0.000 MHZ :-0. I tuned the rig to an ongoing QSO and the rig was receiving well!
Don't know whether it is transmitting or not but so far receiving well! Let's hope for good.
Sunday, April 03, 2005
Monday, March 28, 2005
Snow @ Reno
This picture was taken by Nikon CoolPix 3700 Camera on a sunny day @ Reno, NV. I have been taking some pictures with the new CP3700 camera and the outdoor results are fantastic. I haven't done much indoor photography with the camera.
Saturday, March 12, 2005
Thursday, February 10, 2005
My Latest Camera! Nikon Coolpix 3700
Yesterday (02/09/05) I received my new camera that I got for everyday use and that I can carry around. It is a 3.2 megapixel camera from an excellent manufacturer. Best part is that they are running a $100 mail in rebate. Despite of being sleek, it take really big pictures.
I took some sample pictures indoors and they came out really well. I'll keep the results posted.
I took some sample pictures indoors and they came out really well. I'll keep the results posted.
Monday, February 07, 2005
Get your GMAIL invitation
Don't worry if no one has sent you gmail invitation, you can get your own invitation from here.
isnoop.net gmail invite spooler
This site is an exchange where people who have invitations can donate them to the People who need them.
isnoop.net gmail invite spooler
This site is an exchange where people who have invitations can donate them to the People who need them.
Sunday, February 06, 2005
My New Camera
Recently I got a cool camera Sony DSC-V1 Had to do a lot of research before buying that.
I have used it and found it to be extremely versatile. I can use manual settings to take pictures in low light conditions.
The built-in flash is okay but adding external flash using HotShoe makes a world of a difference!!
This camera would be an overkill for people who just want point and shoot but will be an asset to people interested in photography.
I have used it and found it to be extremely versatile. I can use manual settings to take pictures in low light conditions.
The built-in flash is okay but adding external flash using HotShoe makes a world of a difference!!
This camera would be an overkill for people who just want point and shoot but will be an asset to people interested in photography.
Tuesday, January 25, 2005
We are the world
Today is the 20th Anniversary of the song "We are the world". It was composed and written by Michael Jackson and Lionel Richie in 1985 for the relief of famine in Africa.
CNN:
Tuesday, January 25, 2005 Posted: 12:15 PM EST (1715 GMT)
LOS ANGELES, California (Reuters) -- "We Are the World," the pioneering all-star charity anthem that generated millions of dollars for African famine relief 20 years ago, is returning to the world stage -- this time to raise money for AIDS and tsunami victims.
The group USA For Africa will reissue the Grammy-winning single recorded by more than 40 superstars -- among them Bruce Springsteen, Ray Charles, Diana Ross, Bob Dylan, Bette Midler, Willie Nelson, Michael Jackson and Stevie Wonder -- on February 1 as part of a two-disc DVD set.
In addition, hundreds of radio stations around the globe are planning to broadcast the song on Friday at noon Eastern time to mark the 20th anniversary of the recording, organizers said Monday.
The original single and accompanying album have raised more than $60 million since their 1985 release to help combat hunger in Africa. Proceeds from the upcoming reissue will again be earmarked for famine relief, as well as for AIDS treatment and prevention, plus disaster recovery in areas of East Africa devastated by the recent tsunamis, organizers said.
The double-disc set features four hours of footage from the landmark "We Are the World" recording session, which began late on January 28, 1985, and lasted 12 hours.
Inspired in part by the success of Bob Geldof's Band Aid project, which produced the British charity single "Do They Know It's Christmas" in 1984, "We Are the World" was the brainchild of American singer-activist Harry Belafonte.
After seeing news footage of Ethiopian famine victims, Belafonte contacted leading entertainment manager Ken Kragen for help enlisting stars to record a song whose royalties would go exclusively to relieve Africa's food crisis. There were no artist or agent fees.
The occasion brought together 45 of the biggest names in the U.S. music business to perform a seven-minute-plus ballad composed by Lionel Richie and Michael Jackson.
While participants were all admonished to "check their egos at the door," the recording session at A&M Studios in Hollywood was not without its tensions.
A manager for one of the artists complained that "the rockers don't care for the song that much and they don't want to stand next to the non-rockers," co-organizer Kragen recounted. "They felt it was going to hurt their credibility."
But when Springsteen refused to join the dissidents' revolt, "the whole mutiny fell apart," Kragen said, recalling that the response of the Boss was: "I'm here to save lives and feed people, and I'm staying."
Otherwise, Kragen said, "Everybody was blown away by Ray Charles. And everybody was impressed that Bob Dylan was there, except Bob Dylan, who was scared to death that all these people were there."
Kragen said session producer Quincy Jones, Richie and Stevie Wonder all joined in cajoling a self-conscious Dylan into singing in his rough-hewn voice.
The single, released on March 7, 1985, sold 800,000 copies its first week and shot to No. 1 in three weeks, making it the fastest-rising U.S. chart-topper at the time. It went on to win Grammys for song of the year and record of the year.
The effort also helped pave the way for a string of superstar charity projects that followed, including Farm Aid and Dionne Warwick's "That's What Friends Are For."
The lyrics of the song are here:
Michael-Jackson's Lyrics - We Are The World Lyrics
CNN:
Tuesday, January 25, 2005 Posted: 12:15 PM EST (1715 GMT)
LOS ANGELES, California (Reuters) -- "We Are the World," the pioneering all-star charity anthem that generated millions of dollars for African famine relief 20 years ago, is returning to the world stage -- this time to raise money for AIDS and tsunami victims.
The group USA For Africa will reissue the Grammy-winning single recorded by more than 40 superstars -- among them Bruce Springsteen, Ray Charles, Diana Ross, Bob Dylan, Bette Midler, Willie Nelson, Michael Jackson and Stevie Wonder -- on February 1 as part of a two-disc DVD set.
In addition, hundreds of radio stations around the globe are planning to broadcast the song on Friday at noon Eastern time to mark the 20th anniversary of the recording, organizers said Monday.
The original single and accompanying album have raised more than $60 million since their 1985 release to help combat hunger in Africa. Proceeds from the upcoming reissue will again be earmarked for famine relief, as well as for AIDS treatment and prevention, plus disaster recovery in areas of East Africa devastated by the recent tsunamis, organizers said.
The double-disc set features four hours of footage from the landmark "We Are the World" recording session, which began late on January 28, 1985, and lasted 12 hours.
Inspired in part by the success of Bob Geldof's Band Aid project, which produced the British charity single "Do They Know It's Christmas" in 1984, "We Are the World" was the brainchild of American singer-activist Harry Belafonte.
After seeing news footage of Ethiopian famine victims, Belafonte contacted leading entertainment manager Ken Kragen for help enlisting stars to record a song whose royalties would go exclusively to relieve Africa's food crisis. There were no artist or agent fees.
The occasion brought together 45 of the biggest names in the U.S. music business to perform a seven-minute-plus ballad composed by Lionel Richie and Michael Jackson.
While participants were all admonished to "check their egos at the door," the recording session at A&M Studios in Hollywood was not without its tensions.
A manager for one of the artists complained that "the rockers don't care for the song that much and they don't want to stand next to the non-rockers," co-organizer Kragen recounted. "They felt it was going to hurt their credibility."
But when Springsteen refused to join the dissidents' revolt, "the whole mutiny fell apart," Kragen said, recalling that the response of the Boss was: "I'm here to save lives and feed people, and I'm staying."
Otherwise, Kragen said, "Everybody was blown away by Ray Charles. And everybody was impressed that Bob Dylan was there, except Bob Dylan, who was scared to death that all these people were there."
Kragen said session producer Quincy Jones, Richie and Stevie Wonder all joined in cajoling a self-conscious Dylan into singing in his rough-hewn voice.
The single, released on March 7, 1985, sold 800,000 copies its first week and shot to No. 1 in three weeks, making it the fastest-rising U.S. chart-topper at the time. It went on to win Grammys for song of the year and record of the year.
The effort also helped pave the way for a string of superstar charity projects that followed, including Farm Aid and Dionne Warwick's "That's What Friends Are For."
The lyrics of the song are here:
Michael-Jackson's Lyrics - We Are The World Lyrics
Wednesday, December 29, 2004
Came across some video capturing articles yesterday
Capturing Video in Windows Movie Maker From Digital Sources
http://www.microsoft.com/windowsxp/using/moviemaker/expert/jones_02november25.mspx
A Cool Camcorder information site with inpressive BB:
http://www.camcorderinfo.com/
Capturing Video in Windows Movie Maker From Digital Sources
http://www.microsoft.com/windowsxp/using/moviemaker/expert/jones_02november25.mspx
A Cool Camcorder information site with inpressive BB:
http://www.camcorderinfo.com/
Friday, April 16, 2004
Here is a link that has information on connecting HTX212 to a TNC
TNC to Radio Interconnection Chart
TNC to Radio Interconnection Chart
Friday, January 09, 2004
My Website address is http://www.bhargavaz.com/main.html It contains information on microcontrollers and other electronics projects.
I also have SUN NVRAM Restoration project over there. IDPROM / NVRAM Battery Replacement Page is located at http://www.bhargavaz.com/nvram/nvram.html
I also have SUN NVRAM Restoration project over there. IDPROM / NVRAM Battery Replacement Page is located at http://www.bhargavaz.com/nvram/nvram.html
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