CentOS 7 NetworkManager Keeps Overwriting /etc/resolv.conf

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In CentOS or Red Hat Enterprise Linux (RHEL) 7, you can find your /etc/resolv.conf file, which holds all nameserver configurations for your server, to be overwritten by the NetworkManager.

Pretty git log in one line

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If you type git log to see the commit history in a git repository, the standard output isn't very terminal-friendly. It's a lot of text, with very little information displayed on your screen. You can, however, change the output of your git log to be more condensed and show

MySQL Back-up: Take a mysqldump with each database in its own SQL File

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If's often very useful to have a couple of MySQL oneliners nearby. This guide will show you how to take a mysqldump of all databases on your server, and write each database to its own SQL file. As a bonus, I'll show you how to compress the data and

Install Go 1.5 On CentOS 6 and 7

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This is a really quick guide on how to install the recently released Go 1.5 on a CentOS 6 or 7 server.

Foreman 1.9: ERROR: column hosts.last_freshcheck does not exist

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If you've recently upgraded your Foreman 1.8 setup to 1.9, you may see the following error in your dashboard when navigating to a particular host.

Apache 2.4: Unknown Authz provider: ip

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An Apache 2.4 server with a few missing modules can show the following error in your logs.

iPhone’s “Field Test” debug screen: Dial *3001#12345#* for the real signal strength

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I didn't know it was a thing, but apparently the iPhone has a "Field Test" hidden menu you can use to see all kind of diagnostics about your cell reception, including the actual signal strength compared in dB, instead of just the 5 dots that average things out.

Nginx SSL Certificate Errors: PEM_read_bio_X509_AUX, PEM_read_bio_X509, SSL_CTX_use_PrivateKey_file

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When configuring your SSL certificates on Nginx, it's not uncommon to see several errors when you try to reload your Nginx configuration, to activate the SSL Certificates.

The Hidden “Refresh” Menu in Chrome when Developer Tools Are Opened

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Aah, the things Reddit can teach you.

Apple’s DYLD_PRINT_TO_FILE vulnerability: from zero to root in 2 seconds

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Several weeks ago, a vulnerability in Apple's logging implementation was discovered by Stefan Esser (known for the jailbreaks of your IOS devices). To this day, the vulnerability remains unpatched.