jq is great when dealing with JSON data. Check out the official jq Manual. Content Select only specific keys
Legt man im DNS beispielsweise einen CNAME-Eintrag an, sollte das Ziel am Ende einen Punkt haben, also z.b. d31337.cloudfront.net...
We often do some HTTP requests to fetch the data we want to check for certain criteria. Testing this in...
If you want to check the configuration of a running JVM process you can use jcmd. List the running processes...
How can I configure virtual IP's? There are two parameter to set up virtual ips in Keepalived: virtual_ipaddress...
What is netfilter's Connection Tracking system? The connection tracking system often referenced as nf_conntrack is part of the...
Important If your railscomplete-deployment uses the net-ssh-gem please ensure you use version 5.2.0 or newer to ensure...
collectd5 in version 5.9.0 is broken and you upgraded it everywhere. But because it's FreeBSD it does not...
If freshclam updates are failing even though the update servers are available and you find error messages like the following...
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When things go wrong, for example, caused by a bad commit, we need to revert back to an earlier known...
While the main goal always is to prevent long-running queries in the first place, automatic timeouts can serve as...