jumpingElephant

#!/usr/bin/env bash
set -euo pipefail

function printJwt {
    # Split the line on '.'.
    IFS='.' read -a PARTS <<< "$1"

    echo 'Header:'
    echo "${PARTS[0]}" | base64 -d | jq
    echo 'Payload:'

jumpingElephant

StackExchange: Change default sudo password timeout

Verify /etc/sudoers to contain the line @includedir /etc/sudoers.d.

Create a new file sudo vi /etc/sudoers.d/sudo-session-timeout and insert following line:

Defaults        timestamp_timeout=30

See also Sudoers Manual: User Authentication

jumpingElephant

# generate-secret [length]
function generate-secret {
    length="${1:-20}"
    </dev/urandom tr -dc '_!@#$%A-Z-a-z-0-9' | head -c$length | xargs -I{} echo "{}" | sed 's/[[:space:]]*$//' | tr -d '\n' | xclip -selection clipboard -f; echo ""
}