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-rw-r--r--doc/manual/installation/env-variables.xml2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/manual/installation/env-variables.xml b/doc/manual/installation/env-variables.xml
index 91ecd114f6d4..d1ee0bb2e096 100644
--- a/doc/manual/installation/env-variables.xml
+++ b/doc/manual/installation/env-variables.xml
@@ -39,7 +39,7 @@ bundle.</para>
   <step><para>Set the environment variable and install Nix</para>
     <screen>
 $ export NIX_SSL_CERT_FILE=/etc/ssl/my-certificate-bundle.crt
-$ curl https://nixos.org/nix/install | sh
+$ sh &lt;(curl https://nixos.org/nix/install)
 </screen></step>
 
   <step><para>In the shell profile and rc files (for example,