2023 March

03/20

• You cannot use wildcards to match parts of principals in ARNs! Link to docs (opens new window)
• To create a supplier in Kotlin, do Supplier { <insert code here> }. In Java, we'd do () -> { <insert code here> }

03/29

• You can use '-d' to check if a directory exists in linux. Similarly, '-f' for a file.
• You can use '-x' at the top of a script to get it to print every command before it executes (like a trace).
• 'yum' doesn't work with python3 (wat!)