/* Jerrell's Technical Notes */

December 3, 2008

Linux

Configuring a static IP address

Open configuration file

$ sudo vi /etc/network/interfaces

Find and remove

iface eth0 inet dhcp

Append new configuration

iface eth0 inet static
    address 192.168.1.100
    netmask 255.255.255.0
    network 192.168.1.0
    broadcast 192.168.1.255
    gateway 192.168.1.254


Save and close file.  Restart the network

$ sudo /etc/init.d/networking restart

Shutdown immediately:
shutdown -h now

Reboot immediately:
shutdown -r now

Shutdown at 8 pm:
shutdown -h 20:00

Shutdown in 10 minutes:
shutdown -h +10

Determine internal devices
$ lspci -v | less

Information concerning network devices
$ lshw -C network

Manual configuring a WEP connection
$ sudo ifconfig [interface] down
$ sudo dhclient -r [interface]
$ sudo ifconfig [interface] up
$ sudo iwconfig [interface] essid “ESSID_IN_QUOTES”
$ sudo iwconfig [interface] key HEX_KEY <<<-------- If using ASCII Equivalent, this is s:ASCII_KEY (please make note of the prefix s:)
****Additional Comand that may be needed -- sudo iwconfig [interface] key open <<<----See note below
$ sudo iwconfig [interface] mode Managed
$ sudo dhclient [interface]

October 2, 2008

Perl

To see what modules are running on your unix machine
> find `perl -e 'print "@INC"'` -name '*.pm' -print

To use the CPAN shell tool:
> sudo perl -MCPAN -e shell

> install Spread***::WriteExcel

With this command, the CPAN shell will automatically download the
module, find & retrieve any dependencies like Parse::RecDescent and
File::Temp, and unpack, configure, make, test, and install for you.

To print the version
> perl -v

To print the configuration summary
> perl -V

Additional Information

TechPublic - Perl Modules

Greek Stuff

/* Jerrell's Technical Notes */

December 17, 2008

MAC OS X

December 3, 2008

Linux

October 2, 2008

Perl