Tests: utils: lttng_pgrep spams output when racing with a process

[lttng-tools.git] / tests / utils / utils.sh

diff --git a/tests/utils/utils.sh b/tests/utils/utils.sh
index 9ffcc6ff29e072c03bf1571ec10036126f6f9c42..3e1a81ce5f03e3c7a8aa405b7e2ce29ead2abfb3 100644 (file)
--- a/tests/utils/utils.sh
+++ b/tests/utils/utils.sh
@@ -148,7 +148,7 @@ function lttng_pgrep ()
 
        while IFS= read -r pid ; do
                # /proc/pid/cmdline is null separated.
-               if full_command_no_argument=$(tr '\0' '\n' < /proc/"$pid"/cmdline 2>/dev/null | head -n1); then
+               if full_command_no_argument=$( (tr '\0' '\n' < /proc/"$pid"/cmdline) 2>/dev/null | head -n1); then
                        command_basename=$(basename "$full_command_no_argument")
                        if grep -q "$pattern" <<< "$command_basename"; then
                                echo "$pid"