Example bash script to awk and loop over STDOUT

awk.sh

#!/bin/bash
#
# Example bash script to capture, awk (filter) and loop over STDOUT.
#

key="some_key"
new_value="some_value"

echo "Updating crons to use new env key/value: $key=$new_value"
echo ""

# Grab some command STDOUT and pipe it into awk for filtering.
# 'NR>1 && NF=1' means grab every line bar the first (good for tables) && only the first column.
# 'while read cron' will loop over each line of STDOUT, storing that line in $cron.
kubectl get cj | awk 'NR>1 && NF=1' | while read cron; do
  command="kubectl set env cj/$cron $key=$new_value"
  echo "Updating env of cron: $cron"
  echo "$command"
  eval ${command}
  echo ""
done