IT Featured Content

IT Featured Articles on cool technologies, focused on System Administration and Programming Languages

Why DevOps

We just finished implementing a dev ops deploy toolchain able to compile,deploy, rollback all in automatic way. The objection of the dev team is “it is slow to deploy”. Yes, it is slower then manual copying file. But it is AUTOMATIC It provide a rollback procedure. It is rock solid. It works alone, at midnight. …

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isync: free IMAP and MailDir mailbox synchronizer

isync: free IMAP and MailDir mailbox synchronizerisync is a command line application which synchronizes mailboxes; currently Maildir and IMAP4 mailboxes are supported. New messages, message deletions and flag changes can be propagated both ways. isync is suitable for use in IMAP-disconnected mode.Synchronization is based on unique message identifiers (UIDs), so no identification conflicts can occur …

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Fail2Ban

On these days I decided to tune a bit my new shiny linux server box. I started to set up fail2ban. I think fail2ban is very imporant nowadays because it is a good example of a tool for slowing down attacks without closing your server too much. Fail2ban is a daemon: it wll monitor your …

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?FileSystem is faster than RAM [under your Operating System]

I am studying Apache Kafka (a “distributed streaming platform”) and I stubled upon this conclusion: the “disk read fear” a lot of projects have in the past, is a fake. A lot of distributed database started tutorial with the statement “disk read are slow, write are fast” which is true to some extent, and accounted …

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Hyper VM Troubleshooting

Sometimes your winwos’ HyperV Hypervisor will refuse to start. The problem is tricky because the services seems started if you check them. Also the installation is successful, virtualization is enabled and so on. So what is wrong?

Thinking in Angular 4: Templates

To understand Angular 4, after the “Hero” tutorial you should start from the Template syntax.  We highlighted some statement in red below: Data direction Syntax Type One-way from data source to view target {{expression}} [target]=”expression” bind-target=”expression” Interpolation Property Attribute Class Style One-way from view target to data source (target)=”statement” on-target=”statement” Event Two-way [(target)]=”expression” bindon-target=”expression” Two-way …

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esp8266 webImport

UPDATED and BUGFIXED! MicroPython Repl command line is very nice, because you can telnet to the chip and read-and-evaluate python code. It is a great way of learning embedded IoT. The bad thing you cannot copy file while it is running, so experimenting get bad. Also an automatic module update would be a very nice thing to …

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