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Self-Healing Failsafes

In case something happens to SlickStack Core Bash Scripts, either deleted, nulled or otherwise, there are a few failsafes we have built in. First, the Core Cron Jobs will re-download the Bash Scripts if not found or contents nulled. Second, the root Crontab will re-download the Core Cron Jobs if not found or contents nulled. […]

Why env-vars not used

**Why don’t use you env-vars (environment variables)?** Teams who use GitHub repos to develop their sites (e.g. dev/stage/production branches) have started using env-vars with systems like Roots Trellis so that their entire codebase can be safely open-source. However, this requires defining the env-vars within the server stack (hidden from public root) so it’s not so […]

ss check

Routine: runs /var/www/ss-check Default interval: often Description: Called by certain processes in SlickStack such as ss install and cron jobs (in case missing or damaged). It will retrieve all the cron job and bash script files required by SlickStack from our public GitHub repo and place them under the /var/www directory. Note that the only […]

ss import files

Routine: runs ss-import-files Description: Displays an interactive dialogue in the shell that allows you to untar an archive file named /tmp/import.tar or if not exists, an alternative gzipped file that is named /tmp/import.tar.gz which will overwrite the files located under /var/www/html after prompting you to confirm. If any pre-existing files exist that are not overwritten […]


There are a few different types of CLI commands you can leverage when logged into SSH on a SlickStack server. Keep in mind that SlickStack is designed for the Ubuntu LTS operating system, and also bundles WP-CLI too, so we take a very pragmatic approach to dealing with CLI commands to avoid conflicts while still […]

Force Cloudflare cache HTML files

By default SlickStack sets Cache-Control headers on .html files:   location ~* \.(html)$ { try_files $uri $uri/ /index.php?$args; set $cachecontrol “public, max-age=691200”; }   However, Cloudflare considers .html files as dynamic content and they will strip out etag and content-length headers from SlickStack… Cloudflare does NOT strip the cache-control header, however it effectively ignores it […]

Does SlickStack support PHP Composer?

As of March 2022 we announced no more support for PHP Composer. We never “really” supported it, but had played with it as part of experimental Magento support, etc. This lead us to realize that Composer is rather the opposite of what SlickStack wants to embrace, which is lightweight and straightforward module control and optimization. […]

What is a pilot file?

A SlickStack pilot file is a small bash script that any developer, team, or company can maintain to make it easier/faster to manage multiple SlickStack servers. We recommend the “secret Gist” feature on GitHub, which allows you to generate a file that can be wget without allowing search engine indexing. Within the pilot file your […]

LEMP stack meaning

What is the meaning of LEMP stack? It is an acronym that stands for: Linux Nginx MySQL PHP And yes it’s a little funny that the “E” stands for Nginx, but it was trying to be similar to the LAMP stack acronym so they chose “E” to make it sound nice. The “Eeee” sound is […]

IP Address Blocks

Here are IP blocks you should whitelist in Cloudflare firewall:   https://uptimerobot.com/help/locations/

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