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-rw-r--r--doc/reduce-memory.md2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/reduce-memory.md b/doc/reduce-memory.md
index 8d8ccdfedc..b0faf0825a 100644
--- a/doc/reduce-memory.md
+++ b/doc/reduce-memory.md
@@ -41,7 +41,7 @@ threads take up 8MiB for the thread stack on a 64-bit system, and 4MiB in a
By default, since glibc `2.10`, the C library will create up to two heap arenas per core. This is known to cause excessive memory usage in some scenarios. To avoid this make a script that sets `MALLOC_ARENA_MAX` before starting bitcoind:
```bash
-#!/bin/bash
+#!/usr/bin/env bash
export MALLOC_ARENA_MAX=1
bitcoind
```