Fabian Lee : Software Engineer

Bash: using dig for reverse DNS lookup by IP

March 24, 2023
Categories: Logging

The dig utility is convenient for doing manual DNS resolution from your system. Additionally, it uses the same OS resolver libraries as your applications which makes it more accurate than nslookup for emulating application issues and its output is more suitable for machine parsing. # ensure ‘dig’ is installed sudo apt install -y bind9-dnsutils dig … Bash: using dig for reverse DNS lookup by IP

Ansible: embedding a timestamp in a file name

September 24, 2022
Categories: Automation

If you are creating a log file or perhaps an archive directory, it can be a convenience to end users to use a sortable timestamp in the file name itself, similar to “YYYYMMDD-HHMMSS”. This allows them to easily find the file relevant to their needs. Here are a couple of ways to implement this logic … Ansible: embedding a timestamp in a file name