Friday, July 17, 2009

Find out what RAM type you have in Linux

To check what RAM memory type yo have installed (and also see other useful information about your system), do a

#sudo dmidecode

Depending on the version of dmidecode you have installed and the hardware configuration you have, each hardware device will have a certain type number assigned t it. On my machine, the RAM has type 6. So to see what RAM type and speed you have, do a

#sudo dmidecode –type 6

and the output will be something like

dmidecode 2.9
SMBIOS 2.3 present.

Handle 0×0008, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: ROW-0
Bank Connections: 1 0
Current Speed: 800
Type: DIMM SDRAM
Installed Size: 256 MB (Double-bank Connection)
Enabled Size: 256 MB (Double-bank Connection)
Error Status: OK

Saturday, July 11, 2009

vsftpd configuration; CHROOT and SSL

vsftp.conf
------------------------
listen=YES
anonymous_enable=NO
local_enable=YES
dirmessage_enable=YES
chroot_local_user=YES
chroot_list_enable=NO
xferlog_enable=YES
chown_username=root
chown_uploads=YES
connect_from_port_20=YES
secure_chroot_dir=/var/run/vsftpd
pam_service_name=vsftpd
ssl_enable=YES
#allow_anon_ssl=YES
force_local_data_ssl=YES
force_local_logins_ssl=YES
ssl_tlsv1=YES
ssl_sslv2=YES
ssl_sslv3=YES
rsa_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
rsa_private_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
------------------------

Grep the configuration file derivatives without comment

cat /etc/squid/squid.conf | sed '/ *#/d; /^ *$/d'