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This is a very quick script to get a single instance of neo4j running in a docker container. The username and password is set using the NEO4J_AUTH environment variable. #!/bin/bash # # Script: neo4j-docker.sh # Purpose: install neo4j container image after some simple environmentment prep # DOCKER=$(which docker) [ $? == 0 ] || { echo "ERROR: Check if docker is installed (and in your PATH)" ; exit 1; } DATA_DIR="$HOME/docker/neo4j-volumes/data" LOG_DIR="$HOME/docker/neo4j-volumes/logs" IMPORT_DIR="$HOME/docker/neo4j-volumes/import" PLUGINS_DIR="$HOME/docker/neo4j-volumes/plugins" RUNNING_CONTAINER=$($DOCKER ps -a | grep "neo4j:latest" | awk {'print $1'}) [ -z "$RUNNING_CONTAINER" ] || docker rm -f $RUNNING_CONTAINER [ -d $DATA_DIR ] && rm -rf $DATA_DIR/* || mkdir $DATA_DIR [ -d $LOG_DIR ] && rm -rf $DATA_DIR/* || mkdir $LOG_DIR [ -d $IMPORT_DIR ] && rm -rf $DATA_DIR/* || mkdir $IMPORT_DIR [ -d $PLUGINS_DIR ] && rm -rf $DATA_DIR/* || mkdir $PLUGINS_DIR $DOCKER run \ --name testneo4j \ -p7474:7474 -p7687:7687 \ -d \ -v $DATA_DIR:/data \ -v $LOG_DIR:/logs \ -v $IMPORT_DIR:/var/lib/neo4j/import \ -v $PLUGINS_DIR:/plugins \ --env NEO4J_AUTH=neo4j/test1234 \ neo4j:latest

This is an article which I originally wrote for Rackspace Solve , in June 2021 The Internet of Things – a quick recap You no longer need to be a gadget aficionado or even an “early adopter” to be a regular user of Internet of Things (IoT) devices, or even understand what the IoT is. The number of “smart” devices that we use every day continues to steadily increase. Internet doorbells, connected cars, smart speaker devices, security systems and fitness trackers are a few examples of IoT devices that are now considered mainstream and used regularly in our everyday lives....

It’s looking like offices may never be the same again. With permanent work-from-home policies being rolled out by the likes of Salesforce, Facebook and Microsoft, it’s looking like offices might never be the same again. Many businesses have closed office locations, adjusted their IT systems to support remote working, and, to their surprise, found they could operate just as well remotely. In fact, many organizations have even reported productivity gains. Hindsight has exposed the real inefficiencies in office life, and it’ll be difficult for leaders to demand fully returning to old ways....

It’s time to hit reset and bring some long-overdue clarity to the edge conversation. Ask 10 different people to define edge computing and you’ll probably get 10 different definitions. The reason is that edge computing is not, whatever many might say, a technology. Instead, it’s a concept or a philosophy relating to the management and use of data. …edge computing is not, whatever many might say, a technology. Instead, it’s a concept or a philosophy relating to the management and use of data....

Restoring Web Applications for edrandall.co.uk Section A - Install & Configure the WebServer with SSL Support Install the required ubuntu webserver packages aptitude install apache2 php5 php5-mcrypt php5-curl Create the following webserver configuration files: * /etc/apache2/conf.d/ejr-servers.conf NameVirtualHost 192.168.2.2:443 * /etc/apache2/sites-available/restore.edrandall.co.uk ServerName restore.edrandall.co.uk <VirtualHost 192.168.2.2:443> SSLEngine On SSLCertificateFile /etc/apache2/ssl/server.crt SSLCertificateKeyFile /etc/apache2/ssl/server.key DocumentRoot /var/www/ <Directory "/var/www"> Order deny,allow Deny from all Authname "restore.edrandall.co.uk" AuthUserFile /var/www/.htpasswd AuthType Basic Require valid-user Allow from 192.168.2. Satisfy Any </Directory> </VirtualHost> * /etc/apache2/ports....

A) iptables script #!/bin/bash ipt=$(which iptables) #Flush all existing rules $ipt -F #Set default policies $ipt -P INPUT DROP $ipt -P OUTPUT ACCEPT $ipt -P FORWARD DROP $ipt -A INPUT -i lo -j ACCEPT #Allow stuff back in that we’ve sent out $ipt -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT #Allow inbound SSH to this box $ipt -A INPUT -p tcp --dport 22 --source 172.16.0.0/16 -j ACCEPT #Save the rules /sbin/service iptables save #Show the rules $ipt --list -n -v Test (from desktop machine):...

Creating an Encrypted Disk Partition Created a new logical partition (/dev/vda5) which is 500MB in size After a reboot, check the partition is there and looks okay: fdisk -cul /dev/vda Prepare the partition for encryption (enter YES and passphrase when prompted): cryptsetup luksFormat /dev/vda5 Unlock the encrypted partition cryptsetup luksOpen /dev/vda5 encpartition Have a look in the /dev/mapper directory, there’s an entry for /dev/mapper/encrypted partition: lrwxrwxrwx. 1 root root 7 Feb 21 12:24 /dev/mapper/encpartition -> ....

Download the epel packages from: http://fedoraproject.org/wiki/EPEL Edit the files: /etc/yum.repos.d/epel-repo and /etc/yum.repos.d/epel-testing.repo Uncomment the following line: #baseurl=http:// Comment the following line (Otherwise yum won’t find the epel packages and won’t work properly.): mirrorlist=http:// Install cobbler: yum install cobbler policycoreutils-python-2.0.83-19.18.el6.i686 Install mod_python for apache yum install mod_python Install dhcp yum install dhcp Install syslinux and syslinux-tftpboot yum install syslinux syslinux-tftpboot Cobbler and SELinux don’t play nice together. Whilst it is possible to configure cobbler to work with selinux, it is easier to disable it altogether....

I know there’s many ways to do this, but I quite like this method for a batch file rename: ls foo*.jpg | awk '{print("mv "$1" "$1)}' | sed 's/foo/bar/2' | /bin/bash If you want to do a dry run first, then just omit the pipe to bash: ls foo*.jpg | awk '{print("mv "$1" "$1)}' | sed 's/foo/bar/2'

Sometimes SCP, SFTP or other methods of file transfer aren’t available. Using netcat and tar, files can be archived and sent over the network on the fly, like this: On the destination server: mkdir /destination/directory cd /destination/directory nc -l 7000 | tar x On the source server: cd /source/directory tar cf - * | nc destination-hostname 7000