docs: add bash progress bar article

content/articles/2024/bash_printf/files/script2_getoutput.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+PING_ITER=16
+
+# shellcheck disable=2317
+command() {
+    local -r host=${1?"first parameter must be an host"}
+    local -r iteration=${2?"second parameter must be an iteration number"}
+    local -r cmd=(ping -c "${iteration}" "${host}")
+
+    "${cmd[@]}"
+}
+
+parse_output() {
+    while read -r line; do
+        printf "out: %s\n" "${line}"
+    done
+}
+
+main() {
+    command "aquilenet.fr" "$PING_ITER" > >(parse_output)
+}
+
+main
+exit 0