Debian/Ubuntu
grep -vH "#" /var/spool/cron/crontabs/*
RedHat/Centos/Rocky
grep -vH "#" /var/spool/cron/*
Published directly from my personal knowledge base.
Customize Freshervice User Portal
It is possible to customize almost all of the user portal but you better know what you are doing. Otherwise you may end up like me, spending way more time than you ever should on customizing this damn portal.
Let’s hope this one helps you, otherwise feel free to reach out to me on Twitter.
Page Header Place a variation of the below at Admin > General Settings > Helpdesk Rebranding > Requester Portal Branding > Customize Portal > Layout And Pages > Portal Pages > General Pages > Portal Home
[Read More]
DNS Resolution Everywhere
Usually at leas one of those is present on any system
dig nslookup host But sometimes the usual suspects don’t work, especially in container-land. After trying them you may try some more involved/unknown things:
getent Part of glibc, this will probably work on nearly every system.
getent hosts example.org Or, if you specifically want to query A or AAAA records.
getent ahostsv4 example.org getent ahostsv6 example.org Using Python2 Or Python3 Given this depends on glibc it is more of a alternative than another real solution
[Read More]
Publish Parts Of Obsidian To My Personal Site
The idea at the start was simple. Do something like Obsidian Publish , so read frontmatter and if it contains published: True put it up on a website to view.
Info
I have since rewritten and updated this tool: New version
The Basics I started with taking a look at different static site generators but after a bit of testing I ended up back at Hugo, which I already use for ps1.
[Read More]
curl: Modify DNS Resolution
You can intercept normal name resolution in curl with the --resolve parameter allowing you to do things like talk to a specific site of a DNS load-balanced setup or talk to a new deployment not yet made productive.
You can specify the resolve option multiple times so you can even catch redirects and move them to where you want as well.
It’s important to note that this intercept does only work on the ports you specify in the entries.
[Read More]
How SELinux screws with scripts when run over VMware Tools
SELinux by default prohibits certain things from working through VMware tools (Ansible connection or plain API).
This can be solved two ways:
- Disabling SELinux: BAD, but easy
- Writing a custom SELinux policy: complicated but more secure
Note: Adding/Changing this policy through a VMware tools connection is thankfully possible
Example policy
This policy is the base for a VMware tools policy and allows entering the rpm context (yum).
module custom-vmtools 1.0;
require {
type rpm_script_t;
type vmtools_unconfined_t;
class process transition;
}
#============= vmtools_unconfined_t ==============
allow vmtools_unconfined_t rpm_script_t:process transition
Replace Line In YAML While Keeping Indentation Using Ansible
In theory Ansible should be declarative and have full control over the systems we touch with it.
In practice, this is unfortunately not always the case.
With this nifty task we can replace the value of a key (given as yaml_key) to a new value (given as new_value) while preserving it’s indentation.
- name: Replace values in YAML file while keeping their indentation lineinfile: backup: true backrefs: true state: present path: foo.
[Read More]
Looping Dates macOS
date on MacOS does not support --date, so a workaround is needed. Converting Date to unix epoch, adding one day in epoch and converting back.
The Scripty Way Taken from a blog post
#!/bin/zsh start=$year-01-01 end=$year-12-31 currentDateTs=$(date -j -f "%Y-%m-%d" $start "+%s") endDateTs=$(date -j -f "%Y-%m-%d" $end "+%s") offset=86400 while [ "$currentDateTs" -le "$endDateTs" ] do date=$(date -j -f "%s" $currentDateTs "+%Y-%m-%d") echo $date currentDateTs=$(($currentDateTs+$offset)) done The Brew Way As I found out long after writing the above you can simply brew install coreutils and get a date command with the --date option.
[Read More]
Download Full Website Copy
Sometimes it’s nice to download a best effort version of a website, for example before completely redesigning it.
domain=WEB.SITE
wget $domain --recursive --no-clobber --page-requisites --html-extension --convert-links --restrict-file-names=windows --domains $domain
Renovate Bot
My tool of choice for doing dependency maintenance/update type of stuff for both [[infrastructure-as-code]] and [[software-projects]]
Vmware Tools Copy Files
Copy To Guest
$vm = Get-VM -Name TEST
Get-Item "X:\yourfile.txt" | Copy-VMGuestFile -Destination "c:\temp" -VM $vm -LocalToGuest -GuestUser "Administrator" -GuestPassword "Pa$$w0rd"
Copy From Guest
$vm = Get-VM -Name TEST
Copy-VMGuestFile -Source c:\yourfile.txt -Destination c:\temp\ -VM $vm -GuestToLocal -GuestUser "Administrator" -GuestPassword "Pa$$w0rd"
Ansible VMware Connection Plugin & Become
When using VMware as the connection plugin to connect to remote hosts you commonly set two facts for username and password:
ansible_vmware_tools_user: "mkamner" ansible_vmare_tools_password: "Super Secret PW" This will work just fine for windows and with many tasks on linux.
However, if you want to use become: true on linux it will fail with the strangest error messages.
For example: apt will fail, because it can’t acquire the lock file
[Read More]
IANA To openSSL Ciphers
Handy table to map IANA IDs of ciphers to their openSSL IDs used in web server configurations,
for example [[nginx]] ssl_ciphers or proxy_ssl_ciphers
Ansible
Need to automate a VM? you need Ansible!
ArgoCD
Django
My preferred framework for building web apps
GitLab
My preferred git server and CI/CD system, either gitlab.com or self-hosted.
Helm
A good way to pull in external dependencies into Kubernetes For writing my own manifests I prefer to use Kustomize.
Hugo
My static site generator of choice, used to build my blog among other things.
JQ
A incredibly powerful tool for manipulating the heaps of JSON files and responses I interact with daily.
A lot of times I also use ijq1 instead, which is a interactive version of jq.