Seacoast Digital Computers, Inc.
November 2, 2009
April 16, 2009
Motronics Circuits International Inc
We are an independent electronic component distributor. Our strength lies in locating obsolete parts and hard-to-find components that are often cirtical to our customers’ operations. We also are very strong in supplying load cells and strain gauges.
New Century Components
http://www.hobid.com/newcentury
New Century Components |
|
| We are an Independent Electronics Distributor specializing in providing obsolete, allocated and hard to find electronic components to Commercial/Military OEM’s and contract manufacturers worldwide. AS9120:2002 / ISO 9001:2000 Certified ERAI MEMBER |
March 24, 2009
icic.biz
http://www.icic.biz/offerlist/ is an online global marketplace primarily for electronic components. The main goal of our site to find the most reliable suppliers from China to serve the inustrial need all over the world.
November 24, 2008
hobid.biz
http://www.Hobid.biz - Request and compare quotes from leading distributors in the industry
Request a quote from leading distributors
electronic components stock
00443-62030 030-1975-001 0325-6017-001 0363-D25K10R 37693
10-2-470 1004-375 101-99-00002 1010 10175247
10183054 10184981 102 102070-002 10270960
10272355 10309-B 103149-8 104389 105-0753-001
105.518-8 1054-5013-31 10664168 108951P1 REV. A 109662-002
10H501/BEAJC/883C 10H516/BEAJC/883 10H558/BEAJC/883C 1250-003 1275-415
13086588-9 141-104-0001 142016-01 143511-02 148088-02
15-1330-429-1 15-1330418-1 15-553167-1 150516-3052 150D106X9035R2
151-0603-00 15157308 16366F TYPE WTG 171J 17C3-2177
1816-0136 1820-0285 183115 1899-440-0/97942 18CV8SC-25
November 19, 2008
datasheet
http://www.datasheet.ws/
Part No. Technical Notes
2743019447 SURFACE MOUNT BEAD, 5.1MM LG., (DIFFERENTIAL-MODE), BROADBAN
2743021447 SURFACE MOUNT BEAD, 9.6MM LG., (DIFFERENTIAL-MODE), BROADBAN
2944666671 WOUND FERRITE BEAD, 2 1/2 TURNS, BROADBAND FREQUENCIES 1-2
AMK105BJ225MV CAP, MLCC, 0402, 4V, X5R, 2.2UF, ¡À20%, T&R
AMK105BJ225MV-F CAP, MLCC, 0402, 4V, X5R, 2.2UF, ¡À20%, T&R
AMK105BJ475MV CAP, MLCC, 0402, 4V, X5R, 4.7uF, ¡À20%, T&R
AMK105BJ475MV-F CAP, MLCC, 0402, 4V, X5R, 4.7uF, ¡À20%, T&R
AMK107BJ106MA CAP, MLCC, 0603, 4V, X5R, 10UF, ¡À20%, T&R
AMK107BJ106MA-T CAP, MLCC, 0603, 4V, X5R, 10UF, ¡À20%, T&R
AMK107BJ226MA CAP, MLCC, 0603, 4V, X5R, 22uF ¡À20%, T&R
AMK107BJ226MA-T CAP, MLCC, 0603, 4V, X5R, 22uF ¡À20%, T&R
AMK107BJ475MK CAP, MLCC, 0603, 4V, X5R, 4.7UF, ¡À20%, T&R
AMK107BJ475MK-T CAP, MLCC, 0603, 4V, X5R, 4.7UF, ¡À20%, T&R
AMK316BJ107ML CAP, MLCC, 1206, 4V, X5R, 100UF, ¡À20%, T&R
AMK316BJ107ML-T CAP, MLCC, 1206, 4V, X5R, 100UF, ¡À20%, T&R
AMK316BJ476ML CAP, MLCC, 1206, 4V, X5R, 47UF, ¡À20%, T&R
AMK316BJ476ML-T CAP, MLCC, 1206, 4V, X5R, 47UF, ¡À20%, T&R
BK1005HM102 FERRITE BEAD, MULTILAYER CHIP, 0402, 1000 OHMS, ¡À25%, T&R
November 17, 2008
directory web site
http://www.hobid.info/
November 15th, 2008
Tecal Electronics, LLC
Franchised stocking distributor of Taiyo Yuden and Kamaya (Mitsubishi) passive electronic components including: capacitors, inductors, resistors, ferrite products, EMI/RFI filters, chokes, coils, thermistors, etc.
http://icinventory.biz/
AZEGO Technology Services inventory file
November 14th, 2008
| Part No | Mfr | Date Code | Quantity | Comment |
|---|---|---|---|---|
| 1N4103-1JANTX | MSW | 488 | ||
| 1N4104-1JANTX | MSW | 1445 | ||
| 1N4108-1JANTX | MSW | 3961 | ||
| 1N4109-1JANTX | MSW | 2348 | ||
| 1N4110-1JANTX | MSW | 4550 | ||
| 1N4110UR-1JANTX | MSW | 426 | ||
| 1N4116-1JANTX | MSW | 104 | ||
| 1N4130-1JAN | MSW | 699 | ||
| 1N4148-1JANTXV | MSW | 12215 | ||
| 1N4148T/R | PHA | 2370000 | ||
| 1N4150-1JAN | MSW | 902 | ||
| 1N4153-1JANTXV | MSW | 589 | ||
| 1N4372A-1JANTX | MSW | 3564 | ||
| 1N4464JANTX | MSW | 190 | ||
| 1N4466USJANTXV | MSW | 37 | ||
| 1N4473JANTX | MSW | 207 | ||
| 1N4481JANTX | MSW | 2169 | ||
| 1N4487JAN | MSW | 299 | ||
| 1N4487JANTX | MSW | 3338 | ||
| 1N4490JANTX | MSW | 1024 | ||
| 1N4496JANTX | MSW | 556 |
September 13, 2008
memcached
http://www.example.net.cn/archives/example/index.html
http://hi.baidu.com/xproduct/blog/item/850c19f44c1eb76cddc47480.html
http://www.yesadmin.com/647/139291/index.html
mysql主从数据库同步
MySQL数据库磁盘优化
所谓死锁<DeadLock>: 是指两个或两个以上的进程在执行过程中,因争夺资源而造成的一种互相等待的现象,若无外力作用,它们都将无法推进下去.此时称系统处于死锁状态或系统产生了死锁,这些永远在互相等待的进程称为死锁进程.
September 11, 2008
Stop PHP nobody Spammers
Stop PHP nobody Spammers
http://www.webhostgear.com/232.html
Update: May 25, 2005:
- Added Logrotation details
- Added Sample Log Output
PHP and Apache has a history of not being able to track which users are sending out mail through the PHP mail function from the nobody user causing leaks in formmail scripts and malicious users to spam from your server without you knowing who or where.
Watching your exim_mainlog doesn’t exactly help, you see th email going out but you can’t track from which user or script is sending it. This is a quick and dirty way to get around the nobody spam problem on your Linux server.
If you check out your PHP.ini file you’ll notice that your mail program is set to: /usr/sbin/sendmail and 99.99% of PHP scripts will just use the built in mail(); function for PHP - so everything will go through /usr/sbin/sendmail =)
Requirements:
We assume you’re using Apache 1.3x, PHP 4.3x and Exim. This may work on other systems but we’re only tested it on a Cpanel/WHM Red Hat Enterprise system.
Time:
10 Minutes, Root access required.
Step 1)
Login to your server and su - to root.
Step 2)
Turn off exim while we do this so it doesn’t freak out.
/etc/init.d/exim stop
Article provided by WebHostGear.com
Step 3)
Backup your original /usr/sbin/sendmail file. On systems using Exim MTA, the sendmail file is just basically a pointer to Exim itself.
mv /usr/sbin/sendmail /usr/sbin/sendmail.hidden
Step 4)
Create the spam monitoring script for the new sendmail.
pico /usr/sbin/sendmail
Paste in the following:
#!/usr/local/bin/perl
# use strict;
use Env;
my $date = `date`;
chomp $date;
open (INFO, “>>/var/log/spam_log”) || die “Failed to open file ::$!”;
my $uid = $>;
my @info = getpwuid($uid);
if($REMOTE_ADDR) {
print INFO “$date - $REMOTE_ADDR ran $SCRIPT_NAME at $SERVER_NAME n”;
}
else {
print INFO “$date - $PWD - @infon”;
}
my $mailprog = ‘/usr/sbin/sendmail.hidden’;
foreach (@ARGV) {
$arg=”$arg” . ” $_”;
}
open (MAIL,”|$mailprog $arg”) || die “cannot open $mailprog: $!n”;
while (<STDIN> ) {
print MAIL;
}
close (INFO);
close (MAIL);
Step 5)
Change the new sendmail permissions
chmod +x /usr/sbin/sendmail
Step 6)
Create a new log file to keep a history of all mail going out of the server using web scripts
touch /var/log/spam_logchmod 0777 /var/log/spam_log
Step 7)
Start Exim up again.
/etc/init.d/exim start
Step 
Monitor your spam_log file for spam, try using any formmail or script that uses a mail function - a message board, a contact script.
tail - f /var/log/spam_log
Sample Log Output
Mon Apr 11 07:12:21 EDT 2005 - /home/username/public_html/directory/subdirectory - nobody x 99 99 Nobody / /sbin/nologin
Log Rotation Details
Your spam_log file isn’t set to be rotated so it might get to be very large quickly. Keep an eye on it and consider adding it to your logrotation.
pico /etc/logrotate.conf
FIND:
# no packages own wtmp — we’ll rotate them here
/var/log/wtmp {
monthly
create 0664 root utmp
rotate 1
}
ADD BELOW:
# SPAM LOG rotation
/var/log/spam_log {
monthly
create 0777 root root
rotate 1
}
Notes:
You may also want to chattr + i /usr/sbin/sendmail so it doesn’t get overwritten.