Thursday, February 14, 2008
High Performance SSH/SCP - HPN-SSH
This looks very impressive
http://www.psc.edu/networking/projects/hpn-ssh/
http://www.psc.edu/networking/projects/hpn-ssh/
Monday, July 09, 2007
anything or whatever
So now that we have Anything and Whatever selling in Singapore. This is really great.
The other day when my wife asked me to buy some soft drinks as she felt like having some. And so, being the good husband I am, I asked her what she like.
Yes, you must have had the same good old true blue Singaporean's answer
* Anything
* Whatever.
hehe .. guess what I bought back home ..
I read on the paper that the drinks sold much better then it was expected Today. And that the inventor is expected to comes up with newer version. So what might the name of the new breverages would be call?
Of cos you know the answer lar, if not you are not a singaporean lor.
Anything Lar
Whatever Lor
really no kidding! How many times have you said "Anything Lar" and "Whatever Lor". And of coourse, it's against the Singlish grammatical rule not to use Anything with Lar and Whatever with Lor.
so stay tune for Anything Lar and Whatever lor.
^z
The other day when my wife asked me to buy some soft drinks as she felt like having some. And so, being the good husband I am, I asked her what she like.
Yes, you must have had the same good old true blue Singaporean's answer
* Anything
* Whatever.
hehe .. guess what I bought back home ..
I read on the paper that the drinks sold much better then it was expected Today. And that the inventor is expected to comes up with newer version. So what might the name of the new breverages would be call?
Of cos you know the answer lar, if not you are not a singaporean lor.
Anything Lar
Whatever Lor
really no kidding! How many times have you said "Anything Lar" and "Whatever Lor". And of coourse, it's against the Singlish grammatical rule not to use Anything with Lar and Whatever with Lor.
so stay tune for Anything Lar and Whatever lor.
^z
Thursday, March 01, 2007
power calculators
Very often, a sysadmin would need to calculate the power requirements, these are some useful calculator available from the various vendors.
Sun
- T1000 - http://www.sun.com/servers/coolthreads/t1000/calc/index.jsp
- T2000 - http://www.sun.com/servers/coolthreads/t2000/calc/index.jsp
- Sun V125 - http://www.sun.com/servers/entry/v125/calc/index.jsp
- Sun V210/V240 - http://www.sun.com/servers/entry/v210/calc.html
- Sun Blade 8000 - http://www.sun.com/servers/blades/8000/calc/
IBM
- BladeCenter Power Calculator - http://www-03.ibm.com/systems/bladecenter/powerconfig/ need to download the utility at http://www-03.ibm.com/systems/bladecenter/powerconfig/docs/IBM_BladeCenter_and_System_x_Power_Configurator_v44212.msi
HP
- HP DL385 - http://h30099.www3.hp.com/configurator/calc/DL385.xls
- HP DL585 - http://h30099.www3.hp.com/configurator/calc/DL585.xls
Apple
- Mac Desktops - http://www.apple.com/environment/resources/calculator.html
Others
- Home Assemble PC - http://www.extreme.outervision.com/psucalculator.jsp
Thursday, February 15, 2007
recap
ok , it has been busy, really busy. hasn't been putting in effort to blog. so I am ...
i think it's good a thing to blog something, at least months (or years) down the road, I can recap on what has been.
ok .. the free macbook that I had, it fall onto the floor just less then 2 months I had it ...
dun ask me what happened, it just happened.
the screen doesn't show anything any more. but i am still able to ssh in when it dhcp it's IP.
sent in to apple to ask for repair, as I thought it is still under warranty. but now. they say it's not within scope for apple first year warranty.
managed to rsync my files and back it up on my linux host.. still waiting till I can afford to get a new mac.
chinese new year is round the corner, i took a 2 weeks leave, starting today.
i hope it can be a real resting period. I haven't rested for a long while.
the 2 period when I was out of office last year, it was because for
1) my new born
2) perform my nation commitment, NS duties.
it would be really nice to have a break, away from work. since it seems to be more political in office nowadays. since the inception of ranks.
still miss the old company, where everyone is equal, in term of office social status. everyone is more friendly then.
the inception of rank? well, it does not do well to everyone. direct match to previous job profile? well, i dunno. the way i look at it, it seems like there are some mismatched.
well for me, i don't give a damm about ranks and profile. it's abt the skillsets. Like my OReilly mug, which says "It's not who you are, it about who has the best code"
I will work harder this year, as like all previous years.
Current Interests in :
* virtulisation - solaris zones vs vmware esx
* rapid delivery of build servers - new sets of scripts
i think it's good a thing to blog something, at least months (or years) down the road, I can recap on what has been.
ok .. the free macbook that I had, it fall onto the floor just less then 2 months I had it ...
dun ask me what happened, it just happened.
the screen doesn't show anything any more. but i am still able to ssh in when it dhcp it's IP.
sent in to apple to ask for repair, as I thought it is still under warranty. but now. they say it's not within scope for apple first year warranty.
managed to rsync my files and back it up on my linux host.. still waiting till I can afford to get a new mac.
chinese new year is round the corner, i took a 2 weeks leave, starting today.
i hope it can be a real resting period. I haven't rested for a long while.
the 2 period when I was out of office last year, it was because for
1) my new born
2) perform my nation commitment, NS duties.
it would be really nice to have a break, away from work. since it seems to be more political in office nowadays. since the inception of ranks.
still miss the old company, where everyone is equal, in term of office social status. everyone is more friendly then.
the inception of rank? well, it does not do well to everyone. direct match to previous job profile? well, i dunno. the way i look at it, it seems like there are some mismatched.
well for me, i don't give a damm about ranks and profile. it's abt the skillsets. Like my OReilly mug, which says "It's not who you are, it about who has the best code"
I will work harder this year, as like all previous years.
Current Interests in :
* virtulisation - solaris zones vs vmware esx
* rapid delivery of build servers - new sets of scripts
Friday, November 24, 2006
2 is better then 1 ?
DBS Bank have just introduced 2 factors authentication using SecureID tokens together with existing login PIN.
This, I like very much, as it provides a much secured internet banking experiences.
However, something which I noticed different from the regular RSA secured ID tokens which I am more accustomed to, is that I do not need to key in 4 digits before the random token displayed 6 digits PIN.
Also, I do not like the way the login forms are being designed and implemented. One have to log in via the regular login window, using login ID, login PIN. And once authenticated, the token PIN login page will be displayed.
The token PIN fields could have and should be integrated into the initial login page, providing user with 3 fields to fill in. This way, one could access the iBank application as it was after the authentications. I am sure this is faster, and makes users happier. The back end authentications should be as transparent to users as it was before today eh ?
On another thoughts on authentications when I was reading some discussion on DBS's token solution why can't we have a single-sign-on solution in Singapore itself as it is so small ?
Could singpass be open up sets of API for commercial users to makes of it's authentication services? PKI that is.
I am sure it will rocks the world ...
PS: you can say that I am a dreamer ..
This, I like very much, as it provides a much secured internet banking experiences.
However, something which I noticed different from the regular RSA secured ID tokens which I am more accustomed to, is that I do not need to key in 4 digits before the random token displayed 6 digits PIN.
Also, I do not like the way the login forms are being designed and implemented. One have to log in via the regular login window, using login ID, login PIN. And once authenticated, the token PIN login page will be displayed.
The token PIN fields could have and should be integrated into the initial login page, providing user with 3 fields to fill in. This way, one could access the iBank application as it was after the authentications. I am sure this is faster, and makes users happier. The back end authentications should be as transparent to users as it was before today eh ?
On another thoughts on authentications when I was reading some discussion on DBS's token solution why can't we have a single-sign-on solution in Singapore itself as it is so small ?
Could singpass be open up sets of API for commercial users to makes of it's authentication services? PKI that is.
I am sure it will rocks the world ...
PS: you can say that I am a dreamer ..
Saturday, September 30, 2006
Gigantic bug found at rural Germany
Check this out http://xrl.us/ryhb, a link passed on by some friends.
It seems like the satellite pics on Google Map is bugged. is this the Y2K bug that everyone was talking about?
Some speculated that they take a print of the photo and scan it in and the bug was sitting on the contact sheet when the scan was taking place. If not, we are really looking at a serious bug problem.
Bring out the DDT !
It seems like the satellite pics on Google Map is bugged. is this the Y2K bug that everyone was talking about?
Some speculated that they take a print of the photo and scan it in and the bug was sitting on the contact sheet when the scan was taking place. If not, we are really looking at a serious bug problem.
Bring out the DDT !
Monday, September 04, 2006
life just sucks
Life just sucks. yes it does.
my ex-isp decided to suspend my cable access cos i miss payment for 1 month. yes. 1 month. Cos babyluke was hospitalized for a couple of days and whole life turn upside down. I haven't got time to keep tracks of bills.
so they suspend it.
and i terminate the server with them.
looking at alternativ isp, i found one, which is supposing to be the largest telco in town, with a pretty attractive deal.
i sign up for it.
and guess what? 2 days after i've got my adsl connection up. them came up with a promotion deals that gives away a brand new mac book (THE ONE THAT I WANTED SO BADLY TO REPLACE MY DYING eMAC).
aggrhh .. life just sucks!
my ex-isp decided to suspend my cable access cos i miss payment for 1 month. yes. 1 month. Cos babyluke was hospitalized for a couple of days and whole life turn upside down. I haven't got time to keep tracks of bills.
so they suspend it.
and i terminate the server with them.
looking at alternativ isp, i found one, which is supposing to be the largest telco in town, with a pretty attractive deal.
i sign up for it.
and guess what? 2 days after i've got my adsl connection up. them came up with a promotion deals that gives away a brand new mac book (THE ONE THAT I WANTED SO BADLY TO REPLACE MY DYING eMAC).
aggrhh .. life just sucks!
Monday, June 19, 2006
Monday, June 05, 2006
Wow! Looks like Veritas is free for home use nowadays! Read Tuesday, May 02, 2006
Thursday, March 30, 2006
My Screen rc
my .screenrc
startup_message off
caption string "%{= dd}"
autodetach on
crlf off
deflogin off
hardcopy_append on
vbell on
silencewait 15
# change escape character to X. I use ^a for beginning of line
defescape ^Xx
escape ^Xx
activity "activity in %n (%t)"
bell "bell in %n (%t)"
vbell_msg " *beep* "
#terminfo screen '@7=\E[8%dm:kh=\E[7%dm'
#terminfo screen 'ka1=\e[7:kc1=\e[8'
#terminfo screen 'khome=\E[7~:kend=\e[8~:ka1=\e[7~:kc1=\e[8~'
termcapinfo xterm 'hs:ts=\E]2;:fs=\007:ds=\E]2;screen\007'
term xterm
defbce on
# Do not use xterms alternate window buffer.
# This does disable the scrollback buffer tho :(
#termcap xterm|xterms|xs ti=\E7\E[?47l
#terminfo xterm|xterms|xs ti=\E7\E[?47l
defscrollback 5000
bind a lockscreen
bind ^A lockscreen
defmonitor on
shell zsh
shelltitle '> |zsh'
#screen 2
bind o title
bind E title ""
bind u title (unknown)
bindkey -k k1 select 1
bindkey -k k2 select 2
bindkey -k k3 select 3
bindkey -k k4 select 4
bindkey -k k5 select 5
bindkey -k k6 select 6
bindkey -k k7 select 7
bindkey -k k8 screen $SHELL
bindkey -k k9 title
hardstatus on
caption always "[SCREEN->%w] -=|%m/%d/%Y(%c:%s/%a)|=-"
hardstatus lastline "-.:%w:. [%n = %h]"
Monday, February 27, 2006
Johari Window
a couple of days ago, i was pondering over the conversation with my fellow SAs. I began to wonder if technical aspect is all it is to unix system administration work.
am i becomming the BOFH?
then a close net fren of mine send me a link to update his Johari window.
I did it and find out that
I guess it is really cool if I can see what others think about me and how different it is then what I think about myself. Thus I urge my friends to help in filling it up for me.
The results is at http://kevan.org/johari?view=lesliew .
If you are interested, do hop on to http://kevan.org/johari?name=lesliew
^z
am i becomming the BOFH?
then a close net fren of mine send me a link to update his Johari window.
I did it and find out that
"A Johari window is a metaphorical tool intended to help people better understand their interpersonal communication and relationships. It is used primarily in self-help groups and corporate settings as a heuristic exercise."
I guess it is really cool if I can see what others think about me and how different it is then what I think about myself. Thus I urge my friends to help in filling it up for me.
The results is at http://kevan.org/johari?view=lesliew .
If you are interested, do hop on to http://kevan.org/johari?name=lesliew
^z
Wednesday, November 16, 2005
A very long life
Man! this is mad! the server is up, longer then I am alive on earth!
http://www.interesting-people.org/archives/interesting-people/200511/msg00216.html
http://www.interesting-people.org/archives/interesting-people/200511/msg00216.html
Sunday, October 09, 2005
#!/bin/ubergoonz -x: it looks good ... http://sun.com revamp
#!/bin/ubergoonz -x: it looks good ... http://sun.com revamp
a few weeks after I complained abt the revamped sunsolve search tool. it have improved a lot!
it would be doing the developers dis-services if I did not withdraw my complains.
A great thanks to the developers! great work!
:)
a few weeks after I complained abt the revamped sunsolve search tool. it have improved a lot!
it would be doing the developers dis-services if I did not withdraw my complains.
A great thanks to the developers! great work!
:)
Installing OS over the network - part 1
It seems like more major Operating System (OS) vendors are providing various method of installing their flavour of Operating Systems onto systems via the network. It is somewhat confusing with the different terms it was used and how it work. Here's a quick note on network OS installation on some OS that I am familiar with.
Vendor: Sun Microsystem
OS: Solaris Status: Current version --> Solaris 10
Framework : Jumpstart
Network Protocol used: Bootparam, TFTP, DHCP, NIS, NFS, HTTP
Boot Media: Network booting via OBP, CDROM, DVDROM
Vendor: RedHat
OS: RHEL
Status: Current version --> RHEL 4
Framework: Kickstart
Network Protocols used: HTTP, DHCP, NFS, TFTP, PXE,
Boot Media: Network booting via PXE, CDROM, DVDROM, Floppy
Vendor: NeXT
OS: NeXTSTEP/OPENSTEP
Status: defunct
Framework: Network install ??
Network protocols used: bootp, nibootpd, nibootparam, NFS, netinfo
Boot Media: Floppy, CDROM
Vendor: Apple
OS: Current version --> MacOSX 10.4
Framwork: NetBoot
Network Protocols used: TFTP, DHCP, NFS, DNS
Boot Media: Open Firmware, CDROM, DVDROM
more details wll follow on each network install technologies ... when i grep some time.
Vendor: Sun Microsystem
OS: Solaris Status: Current version --> Solaris 10
Framework : Jumpstart
Network Protocol used: Bootparam, TFTP, DHCP, NIS, NFS, HTTP
Boot Media: Network booting via OBP, CDROM, DVDROM
Vendor: RedHat
OS: RHEL
Status: Current version --> RHEL 4
Framework: Kickstart
Network Protocols used: HTTP, DHCP, NFS, TFTP, PXE,
Boot Media: Network booting via PXE, CDROM, DVDROM, Floppy
Vendor: NeXT
OS: NeXTSTEP/OPENSTEP
Status: defunct
Framework: Network install ??
Network protocols used: bootp, nibootpd, nibootparam, NFS, netinfo
Boot Media: Floppy, CDROM
Vendor: Apple
OS: Current version --> MacOSX 10.4
Framwork: NetBoot
Network Protocols used: TFTP, DHCP, NFS, DNS
Boot Media: Open Firmware, CDROM, DVDROM
more details wll follow on each network install technologies ... when i grep some time.
Friday, May 06, 2005
it looks good ... http://sun.com revamp
If you have noticed ... Sun have just revamp their website. The new website is way too cool (the look) ... if using a correct browser.....
I have always told my wife when it comes to condo's ads. fancy resturant served food ..
"They looks good".
Yes. They really looks good. atrist impression ..
But it is darn buggy!! The worst website revamp that Sun have ever done I would say. (dun belive? check the The history
for a moment, I thought it only happens to IE on windows (cos I was using form the office) ... then when i try that at home .. it's the same thing ..
:(
(BIG BOO)
I tried searching for OBP level matrix for various Sun h/w platforms on Sunsolve to create a script to validate the firmware level ... but when I tried to click on page 2 of the search result ...
Here's the screen shopts of how it looked ...
On a windows's IE
and on a Mac's Safari
...
:(
I have always told my wife when it comes to condo's ads. fancy resturant served food ..
"They looks good".
Yes. They really looks good. atrist impression ..
But it is darn buggy!! The worst website revamp that Sun have ever done I would say. (dun belive? check the The history
for a moment, I thought it only happens to IE on windows (cos I was using form the office) ... then when i try that at home .. it's the same thing ..
:(
(BIG BOO)
I tried searching for OBP level matrix for various Sun h/w platforms on Sunsolve to create a script to validate the firmware level ... but when I tried to click on page 2 of the search result ...
Here's the screen shopts of how it looked ...
On a windows's IE
and on a Mac's Safari
...
:(
The Strange New World of the SolarisTM 10 Service Management Facility
read abt it , The Strange New World of the SolarisTM 10 Service Management Facility, .. brand new way to managed startup scripts ..
sorta like RHEL's chkconfig / service command.
IMOHO, I like the way the SMF works like the wat linux manages the startup scripts.
Som BSD schoool of thoughts perople like the rc.local method of startup services and daemons on UNIX. But I prefer the SysV way.
NEVER MEDDLE WITH BULK THINGS.
modular. objected oriented. that's the way I like it. easier to troubleshoot and manage of cos.
^z
sorta like RHEL's chkconfig / service command.
IMOHO, I like the way the SMF works like the wat linux manages the startup scripts.
Som BSD schoool of thoughts perople like the rc.local method of startup services and daemons on UNIX. But I prefer the SysV way.
NEVER MEDDLE WITH BULK THINGS.
modular. objected oriented. that's the way I like it. easier to troubleshoot and manage of cos.
^z
Wednesday, April 20, 2005
RHEL 4 launch in Singapore
gotten myself some time off to leave office earlier to attend a RHEL 4 launch today, and I must remember to tell myself "never to attend one of such product launch talk again".
I wont mind going to MacWorld Expo
Good lesson learned.
not that I have anything against RH. No! I love RH. In fact, I started my unix/linux venture with Rh5.1. It is redhat that made me be able to learn and have real hands-on on Linux(and later unix).
but such product launch ... is really too marketing .. a total waste of time for any unix SA to attend.
(now .. it may be a good excuse to attend one if it covers the whole day during office hours).
One thing cool may be the free beers after the talks, but too bad the beer pump is way too slow, and and the beer queue is way too long. I did a slapslick joke on the beer pump being slow (it slow because it's not running on an 2.6 kernel).. and invited unfriendly stares .... gosh .. I think there are many w|nd0ws people around, or no one understands what I am talking about!
But one thing I learned is the SELinux feature is gonnna be available on RHEL 4. That should be cool! Great stuffs if the RHEL installed server to be used in an amberzone server.
I wont mind going to MacWorld Expo
Good lesson learned.
not that I have anything against RH. No! I love RH. In fact, I started my unix/linux venture with Rh5.1. It is redhat that made me be able to learn and have real hands-on on Linux(and later unix).
but such product launch ... is really too marketing .. a total waste of time for any unix SA to attend.
(now .. it may be a good excuse to attend one if it covers the whole day during office hours).
One thing cool may be the free beers after the talks, but too bad the beer pump is way too slow, and and the beer queue is way too long. I did a slapslick joke on the beer pump being slow (it slow because it's not running on an 2.6 kernel).. and invited unfriendly stares .... gosh .. I think there are many w|nd0ws people around, or no one understands what I am talking about!
But one thing I learned is the SELinux feature is gonnna be available on RHEL 4. That should be cool! Great stuffs if the RHEL installed server to be used in an amberzone server.
Subscribe to:
Posts (Atom)