Example of function to try something a max number of times (and wait between retries).

try_until.sh

#!/bin/bash

URL="http://ipv4.download.thinkbroadband.com/50MB.zip"

function get_file() {
  # Declare these local variables as integer
  local -i count
  local -i max_retries
  local -i wait_time
  local filename

  filename="$1"

  max_retries=5
  wait_time=15

  count=0
  # Loop until the file gets downloaded or
  # the max number of retries gets reached.
  until wget -q "${filename}" ; do
    sleep $wait_time
    count+= 1

    if [ "$count" -eq "$max_retries" ]; then
      # Max number of retries exceeded
      echo "It was impossible to download ${filename}."
      return 1
    fi
  done
}

# Call the function
get_file "${URL}"

if wget would be a shell function, set -e (if enabled) would be lost. See https://gitlab.com/cki-project/pipeline-definition/-/blob/master/cki_pipeline.yml#L193 for a hack to get around that 🙈

@mh21 Interesting... 🤔
I've always used with a command, so I haven't run into this issue yet. Thanks!