Howtos » ubuntu

How to get/kill process in ubuntu

Van Nhu — Sun, 22 Nov 2009 15:19:10 +0000

For example if process name is php, you can get a list of jobs by using the command bellow

ps aux | grep php

Result

root      7749  0.0  0.1   3236   796 pts/2    S+   16:09   0:00 grep php
root     19292  1.8  5.6  90624 28528 ?        S    01:36  16:09 php test.php

To kill a process you can use kill with a specific pid, for instance 19292 above

kill 19292

And kill all php process

killall -9 php

Howto enable ssl and create self-signed ssl certificate

Van Nhu — Sun, 15 Nov 2009 14:51:18 +0000

Enable ssl
In my case it was simple. I just ran this line

a2enmod ssl

Generate self-signed ssl certificate
Solution: http://www.akadia.com/services/ssh_test_certificate.html

Just follow instruction carefully. Make sure that i step 2 you need to enter a correct “Common Name”, ie your domain. Step 5 and 6 also different for different distributions and installation …

Summary in case link above is not available anymore:
Step 1: Generate a Private Key

openssl genrsa -des3 -out server.key 1024

Step 2: Generate a CSR (Certificate Signing Request)

openssl req -new -key server.key -out server.csr

Step 3: Remove Passphrase from Key

cp server.key server.key.org
openssl rsa -in server.key.org -out server.key

Step 4: Generating a Self-Signed Certificate

openssl x509 -req -days 365 -in server.csr -signkey server.key -out server.crt

Step 5: Installing the Private Key and Certificate
(or the location you want to store)

cp server.crt /usr/local/apache/conf/ssl.crt
cp server.key /usr/local/apache/conf/ssl.key

Step 6: Configuring SSL Enabled Virtual Hosts

SSLEngine on
SSLCertificateFile /usr/local/apache/conf/ssl.crt
SSLCertificateKeyFile /usr/local/apache/conf/ssl.key
SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown

Step 7: Restart Apache and Test

New problem:
ssl_error_ssl2_disabled
Solution in ssl.conf:
# enable only secure protocols: SSLv3 and TLSv1, but not SSLv2
## disabled this one
#SSLProtocol all -SSLv2
## use this instead
SSLProtocol all

New problem:
sec_error_untrusted_issuer due to self-signed SSL Certificate
But it is no problem for me since this is for my own usage and test…

How to set default OS in boot.ini

Van Nhu — Sun, 15 Nov 2009 10:31:42 +0000

This is a boot setup for Microsoft Windows XP Professional and Ubuntu (wubi) where we have Windows XP as default and will be preselected on start of computer. This content can be found in c:\boot.ini (be aware this is a hidden system file).

[boot loader]
timeout=15
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
 
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect /NoExecute=OptIn
c:\wubildr.mbr="Ubuntu"

If we wish to start with Ubuntu instead we change default operative system as following

[boot loader]
timeout=15
default=c:\wubildr.mbr
 
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect /NoExecute=OptIn
c:\wubildr.mbr="Ubuntu"