sfloess/*nix.md

## *nix.md

      
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              *nix.md
            
          
    Common *nix Tips and Tricks


D-Bus library appears to be incorrectly set up; failed to read machine uuid: Failed to open “/var/lib/dbus/machine-id”:  dbus-uuidgen > /var/lib/dbus/machine-id
Port Scan:  nmap -sU [URL]
Make an ISO:  mkisofs -V FREEBSD_INSTALL -J -R -b boot/cdboot -no-emul-boot -o ../FreeBSD.iso .
Register Hostname with DHCP Server:  /etc/dhclient.conf:  send host-name [host name];

Window Managers

JWM


GitHub
Configuration v2.3
Linux Man Page

dnsmasq

Using multiple DNS servers

To use multiple DNS servers, when defining your dhcp-host, define a set name and tag:

Set:  dhcp-host=[mac address],[hostname],[ip address],[duration],set:[set/tag name]
Tag:  dhcp-option=tag:[tag/set name],option:dns-server,[DNS server IP address]

Example:

Set:  dhcp-host=4c:72:b9:94:a9:c1,server-01,192.168.168.31,infinite,set:cloud
Tag:  dhcp-option=tag:cloud,option:dns-server,192.168.168.3

Misc


Prevent dnsmasq from appending domain name to invalid domain requests:  server=/[domain name]/

Example:  server=/flossware.com/


ddclient

How to configure namecheap.
Namecheap

Please note:  The ddns password is found in the web UI https://ap.www.namecheap.com/Domains/DomainControlPanel/[domain name]/advancedns.  Grep for Dynamic DNS Password.

/etc/ddclient.conf

ssl=yes
domain=300
use=web, web=https://dynamicdns.park-your-domain.com/getip
protocol=namecheap                                                                                                     
login=[your domainname]                                                            
password=[Dynamic DNS Password]                                               
[host]
Example:
ssl=yes
domain=300
use=web, web=https://dynamicdns.park-your-domain.com/getip                                                                      
protocol=namecheap                                                                                                     
login=flossware.org                                                                                                    
password=abcdefghijklmnopqrstuvwxyz1234567890                                                                              
services

Debian setup

Apache HTTP Server


README.* not showing up in dir listing:  /etc/httpd/conf.d/autoindex.conf

Remove READ.* from IndexIgnore .??* *~ *# HEADER* README* RCS CVS *,v *,t


Database

Postgres


${POSTGRES_CONF_HOME}/postgresql.conf

listen_addresses = '*'


${POSTGRES_CONF_HOME}/pg_hba.conf

host    all             all             192.168.168.0/24        password


Initialize

[init script] initdb
service postgresql initdb


Create user/database:

su - postgres
psql
CREATE USER [username] WITH PASSWORD '[password]';
CREATE DATABASE [database];
GRANT ALL PRIVILEGES ON DATABASE [database] to [user];


Maria DB


${MARIA_CONF_HOME}/conf.d/*server*.cnf

bind-address = 0.0.0.0
user = mysql


Create user/database:

mysql
CREATE USER '[user]' IDENTIFIED BY '[password]';
GRANT USAGE ON *.* TO '[user]'@'%' IDENTIFIED BY '[password]';
FLUSH PRIVILEGES;


Messaging

Apache ActiveMQ


${ACTIVEMQ_HOME}/conf/jetty.xml

<property name="host" value="0.0.0.0"/>


${ACTIVEMQ_HOME}/conf/activemq.xml

<broker xmlns="http://activemq.apache.org/schema/core" brokerName="FlossWare" dataDirectory="${activemq.data}">


Postgres Persistence


Download Postgres JDBC Driver Jar
Copy jar to ${ACTIVEMQ_INSTALL_HOME}/lib/optional
${ACTIVEMQ_CONF_HOME}/activemq.xml

    <bean id="postgres-ds" class="org.postgresql.ds.PGPoolingDataSource">                                       
        <property name="serverName" value=""/>                                                          
        <property name="databaseName" value=""/>                                                     
        <property name="portNumber" value="0"/>                                                                 
        <property name="user" value=""/>                                                                
        <property name="password" value=""/>                                                   
        <property name="dataSourceName" value=""/>                                                      
        <property name="initialConnections" value="1"/>                                                         
        <property name="maxConnections" value="10"/>                                                            
    </bean>
Postfix


Configuration Parameters

Nexus

Uploading to a Debian Repo

for aFile in [fully qualified path]/*deb
do
    echo "    `basename ${aFile}`"

    curl -k -u [username]:[password] -H "Content-Type: multipart/form-data" --data-binary  "@/.${aFile}" http://[host]:[port]/repository/[debian repo name]/
done

Uploading to a Yum Repo

for aFile in [fully qualified path]/*rpm
do
    echo "    `basename ${aFile}`"

    curl -k -u [username]:[password] --upload-file ${aFile} http://[host]:[port]/repository/[yum repo name]/`basename ${aFile}`
done