chaspy

# Retry a command up to a specific numer of times until it exits successfully,
# with exponential back off.
#
#  $ retry 5 echo Hello
#  Hello
#
#  $ retry 5 false
#  Retry 1/5 exited 1, retrying in 1 seconds...
#  Retry 2/5 exited 1, retrying in 2 seconds...
#  Retry 3/5 exited 1, retrying in 4 seconds...

chaspy

#!/bin/bash

PECO_CMD="peco"
KUBECTL_CMD="kubectl"

if ! hash "${PECO_CMD}" 2> /dev/null; then
  >&2 echo "error: ${PECO_CMD} is not installed"
  >&2 echo "see https://github.com/peco/peco"
  exit 1
fi