chore: grep failed when in some special scenario

Author: CarlJi

tests/agent.bats

@@ -85,7 +85,9 @@ setup() {
  SAMPLE_PID=$!
  sleep 2
 
- check_port=$(cat register.port | grep -a 7888)
+ info register.port: `cat register.port`
+ check_port=$(cat register.port | grep -a -Z 7888)
+ info check_port: `echo $check_port`
  [ "$check_port" != "" ]
 
  kill -9 $SAMPLE_PID
@@ -101,7 +103,7 @@ setup() {
  [ -e './simple-agent_profile_listen_addr' ]
  host=$(cat ./simple-agent_profile_listen_addr)
 
- check_port=$(cat register.port | grep $host)
+ check_port=$(cat register.port | grep -a -Z $host)
  [ "$check_port" != "" ]
 
  kill -9 $SAMPLE_PID