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-rwxr-xr-xtests/dd/skip-seek-past-dev.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/dd/skip-seek-past-dev.sh b/tests/dd/skip-seek-past-dev.sh
index caa2314df..5eb7ab5ac 100755
--- a/tests/dd/skip-seek-past-dev.sh
+++ b/tests/dd/skip-seek-past-dev.sh
@@ -33,7 +33,7 @@ get_device_size() {
# Get path to device the current dir is on.
# Note df can only get fs size, not device size.
-device=$(df -P . | tail -n1 | cut -d' ' -f1) || framework_failure_
+device=$(df --output=source . | tail -n1) || framework_failure_
dev_size=$(get_device_size "$device") ||
skip_ "failed to determine size of $device"