Upload busybox binaries to kubernetes pods

add-bin.sh

#!/bin/bash

help(){
  echo
  echo "Usage:"
  echo "add-bin.sh <bin_name> <pod> <dest_path>"
  echo
  echo "Example:"
  echo "add-bin.sh vi my-pod-5df5467c97-fqbzw /mnt/disk"
  echo
}

while getopts ":h" option; do
   case $option in
      h) # display Help
         help
         exit;;
   esac
done

if [ $# -lt 3 ]; then
  help
  exit 2
fi

BASE_URL="https://busybox.net/downloads/binaries/1.35.0-x86_64-linux-musl/"
UPNAME=$(echo $1 | tr '[:lower:]' '[:upper:]')

curl $BASE_URL/busybox_$UPNAME -o $1
chmod a+x $1

kubectl cp $1 $2:$3

rm $1