Jorge Martinez de Salinas

Check your computer’s RAM type and speed

admin — Tue, 13 Oct 2009 18:18:02 +0000

If you want to know which RAM is installed in your PC (DDR, DDR2…) and its speed, type this command: $ sudo dmidecode --type 17 Remember that dmidecode can provide additional (useful) information about your HW.

Verilog plugin for Eclipse

admin — Sun, 11 Oct 2009 09:35:52 +0000

If you are going to develop Verilog/VHDL code using eclipse I’ve got good news for you. Veditor provides a nice environment to work with Verilog. To install it click Help->Install new software. The repository URL is at: http://veditor.sourceforge.net/update Be sure to uncheck Group items by category, otherwise Veditor won’t show up.

Installing Sun’s JRE on Fedora Core

admin — Sun, 11 Oct 2009 09:22:09 +0000

First go here and choose your operating system and architecture. Download the corresponding jre. $ chmod +x jre-6u16-linux-i586-rpm.bin $ sudo ./jre-6u16-linux-i586-rpm.bin Probably your system has another java version already installed: $ java -version If this is the case select the new jre using alternatives: $ sudo alternatives --install /usr/bin/java java /usr/java/jre1.6.0_16/bin/java 2 $ sudo alternatives --config java [...]

HP Invent

admin — Sun, 20 Sep 2009 12:07:01 +0000

Manage VMware virtual machines from the command line

admin — Fri, 11 Sep 2009 10:40:41 +0000

How to control VMware virtual machines from the command line using vmrun.

Indent first paragraph of the section in Latex

admin — Sat, 05 Sep 2009 16:41:51 +0000

By default Latex indents all the paragraphs except the first paragraph of the section. To modify this behavior include the indentfirst package in your document’s preamble: \usepackage{indentfirst}

Send mail from the command line on Mac OSX

admin — Wed, 02 Sep 2009 14:55:45 +0000

I’ll be using my Gmail account to send mail. The first step is to configure the local Postfix server as a relay. Edit /etc/postfix/main.cf: sudo vim /etc/postfix/main.cf Search for a “relayhost=” line and add the following after it: relayhost = smtp.gmail.com:587 smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = smtp_sasl_local_domain = yourdomain.com #smtpd_sasl_application_name = smtpd broken_sasl_auth_clients = yes smtpd_pw_server_security_options = noanonymous smtp_use_tls=yes smtp_tls_security_level=encrypt tls_random_source=dev:/dev/urandom Next create /etc/postfix/sasl_passwd and add [...]

First registered domain name

admin — Tue, 01 Sep 2009 09:33:37 +0000

Have you ever been curious about the first registered domain name? Well, it was symbolics.com.

Setting up OpenSSH public key authentication

admin — Mon, 31 Aug 2009 07:35:45 +0000

First upload your public key to the server you want to log in: scp .ssh/id_rsa.pub user@1.2.3.4:/home/user On the server, add the public key file to the authorized_keys file: cat id_rsa.pub >> .ssh/authorized_keys Now you can login using public key authentication and you don’t have to enter a password anymore.

DNS query to find mail servers

admin — Fri, 28 Aug 2009 07:47:22 +0000

To find which servers handle mail for a particular domain use dig: # dig google.com MX ;; QUESTION SECTION: ;google.com. IN MX ;; ANSWER SECTION: google.com. 561 IN MX 100 google.com.s9a1.psmtp.com. google.com. 561 IN MX 100 google.com.s9a2.psmtp.com. google.com. 561 IN MX 10 smtp1.google.com. google.com. 561 IN MX 10 smtp2.google.com. google.com. 561 IN MX 10 smtp3.google.com. google.com. 561 IN MX 10 smtp4.google.com.