README.md: simplify sharded test command line
use xargs to keep the command in the foreground allowing it to be
stopped easily.
Change-Id: I6b4963b14fb6bff37542a3c5f7a23acc85f6a24d
diff --git a/README.md b/README.md
index 9de9c88..533a1da 100644
--- a/README.md
+++ b/README.md
@@ -249,11 +249,8 @@
# Set the environment variable GTEST_TOTAL_SHARDS to 9 to run 10 test shards
# (GTEST shard indexing is 0 based).
$ export GTEST_TOTAL_SHARDS=9
- $ for shard in $(seq 0 ${GTEST_TOTAL_SHARDS}); do \
- [ ${shard} -lt ${GTEST_TOTAL_SHARDS} ] \
- && GTEST_SHARD_INDEX=${shard} ./test_libaom & \
- done
-
+ $ seq 0 $(( $GTEST_TOTAL_SHARDS - 1 )) \
+ | xargs -n 1 -P 0 -I{} env GTEST_SHARD_INDEX={} ./test_libaom
~~~
To create a test shard for each CPU core available on the current system set
