From 33db52885e3bed0355654336079b0a74394e0ea9 Mon Sep 17 00:00:00 2001
From: Lucas Larson <91468+LucasLarson@users.noreply.github.com>
Date: Fri, 27 Jan 2023 17:16:33 -0500
Subject: [PATCH] add POSIX-compliant alternative

---
 SC3009.md | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/SC3009.md b/SC3009.md
index cf1ce1e..3c00c12 100644
--- a/SC3009.md
+++ b/SC3009.md
@@ -12,7 +12,19 @@ Here, `$i` expands to `{1..5}`. It does **not** expand to the sequence `1 2 3 4
 
 ### Correct code:
 
-For simple sequences of numbers, you may use the `seq` command, e.g. `seq 1 5`.
+```sh
+#!/bin/sh
+i=1
+# while $i ≤ 5 ...
+while [ "${i}" -le 5 ]; do ...
+
+  # something that will occur 5 times
+
+  i=$((i + 1))
+done
+```
+
+You can also use the `seq` command, e.g. `seq 1 5`, but `seq` is not a POSIX utility.
 
 ### Rationale: