update-kernel: TMPDIR in help text

ref !18

1 files changed, 4 insertions, 1 deletions

diff --git a/update-kernel.in b/update-kernel.in
index 29110e9..dda4589 100644
--- a/update-kernel.in
+++ b/update-kernel.in
@@ -6,7 +6,7 @@
 # with setup-bootable
 #
 # Copyright (c) 2014 Timo Teräs
-# Copyright (c) 2014-2015 Kaarle Ritvanen
+# Copyright (c) 2014-2021 Kaarle Ritvanen
 
 PREFIX=
 . $PREFIX/lib/libalpine.sh
@@ -63,6 +63,9 @@ usage() {
 		         -d|--keys-dir             Override directory of trusted keys for apk
 		         --repositories-file <f>   apk repositories file
 
+		On low-memory systems, you may want to point the TMPDIR environment variable to
+		a storage-backed directory.
+
 	__EOF__
 	exit $1
 }