I've come across a lot of RBLs and blocklists that sometimes have an instance of weird formatting whether that is missing a newline character or having an extra "space" at the end of the IP. This can break a lot of daemons and firewalls. Here is my safe way of trying to concatenate lists: cat somelist.txt sed s/" "//g|sed -e '$a' >>updatedlist.txt The first sed removes any spaces which is more common than you think........

After looking at several deployments of VMWare, we had one deployment where the company enabled balloon mode which is essentially a way to overcommit memory the hostnode(s) don't have. Let's say you have put your database into memory or use a cached service in Apache or haproxy/nginx. VMWare will start taking some portions of these and at some point it corrupts things and the application running will either crash, malfunction or segfault. Another factor is that OOMwill be........

Bonding is an excellent way to get both increased redundancy and throughput. It is similar to the "Network Teaming" feature in Windows. There are a few different modes but we will use mode 6, I think it's the best of both worlds, as it is not just a failover, but it provides round robin, so you will get redundancy and load balancing. So if you have a 1G single port, you will have a combined throughput of 4G at this point. Just bear in mind that the true thr........

This is the goto guide for all things Hong Kong Internet and Datacenter. In our 2024 VPS Server/Cloud Buyer's Guide, we place the location of your VPS/hosting........

Cisco's CUCM (Cisco Unified Communication Manager) is a system that combines voice, video, data and mobile products into a single unified management suite. At its core, the CUCMis like a "Super PBX" that controls the flow of all communications through an organization even single or multiple site deployments. Cisco's CUCMmakes communication more effective and simple through centralized management and unification of communications resources.........

Some of the cheaper or newer SSL suppliers will require this to work properly (otherwise you may be prompted that the cert is invalid when it's not the case but it will certainly scare off your users!). In the Apache vhost conf for the domain here is what you add: SSLCACertificateFile /path/to/your/cafile.pem Here is a full example of an SSL Vhost config in Apache using a CA Certificate file ........

convert -append file1.jpg file2.jpg output.jpg The above is all there is to it. file1.jpg and file2.jpg are the ones to combine (the order is used)and output.jpg is the combined image.........

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