path: percona-toolkit_3.7.1-2/t/lib/bash/collect_mysql_info.sh
awk '{print $1}' "$p/mysqld-instances" > "$PT_TMPDIR/collect_mysqld_instances1.test"
pids="$(_pidof mysqld)"
pids="$(echo $pids | sed -e "s/[ \n]/,/g")"
ps ww -p "$pids" | awk '{print $1}' > "$PT_TMPDIR/collect_mysqld_instances2.test"