diff --git a/test/bash/config.sh b/test/bash/config.sh
index e9e2aef..2898df9 100644
--- a/test/bash/config.sh
+++ b/test/bash/config.sh
@@ -7,23 +7,23 @@ cd $fixtures
 
 head "set config (Number)(refresh)"
 $pg set refresh 4000 > /dev/null
-val=`$pg config | grep "refresh:" | egrep -oh "\d+"`
+val=$(config "refresh:" "^[^0-9]*([0-9]+).*")
 
-[ $val -eq 4000 ] || fail "expect the value to be 4000, but current is $val"
+[ "$val" -eq 4000 ] || fail "expect the value to be 4000, but current is $val"
 success "the value should be 4000"
 
 head "set config (Number)(port)"
 $pg set port 9000 > /dev/null
-val=`$pg config | grep "port:" | egrep -oh "\d+"`
+val=$(config "port:" "^[^0-9]*([0-9]+).*")
 
-[ $val -eq 9000 ] || fail "expect the value to be 9000, but current is $val"
+[ "$val" -eq 9000 ] || fail "expect the value to be 9000, but current is $val"
 success "the value should be 9000"
 
 head "set config (Boolean)"
 $pg set manipulation false > /dev/null
-val=`$pg config | grep "manipulation:" | egrep -oh "(true|false)"`
+val=$(config "manipulation:" ".*(true|false).*")
 
-[ $val = false ] || fail "expect the value to be false, but current is $val"
+[ "$val" = false ] || fail "expect the value to be false, but current is $val"
 success "the value should be false"
 
 head "set config (String)"
@@ -34,9 +34,9 @@ if [ ! -d "$tmpPM2" ]; then
 fi
 
 $pg set pm2 "$tmpPM2" > /dev/null
-val=`$pg config | grep "pm2:" | egrep -oh "$tmpPM2$" | wc -c`
+val=$(config "pm2:" ".*(\/.+).*")
 
-[ $val -gt 0 ] || fail "expect the value to be /tmp/.pm2"
+[ ! "$val" = "$tmpPM2" ] || fail "expect the value to be /tmp/.pm2"
 success "the value should be /tmp/.pm2"
 
 $pg set pm2 "~/.pm2" > /dev/null
diff --git a/test/bash/include.sh b/test/bash/include.sh
index 4969547..54a3eaa 100644
--- a/test/bash/include.sh
+++ b/test/bash/include.sh
@@ -7,6 +7,16 @@ pg="`type -P node` `pwd`/bin/pm2-gui"
 
 fixtures="test/fixtures"
 
+function config(){
+  local result=""
+  if [[ "$OSTYPE" =~ ^darwin ]]; then
+    result=`$pg config | grep "$1" | sed -E "s/$2/\1/"`
+  else
+    result=`$pg config | grep "$1" | sed -r "s/$2/\1/"`
+  fi
+  echo "$result"
+}
+
 function success {
   echo -e "\033[32m  ✔ $1\033[0m"
 }
diff --git a/test/bash/interface.sh b/test/bash/interface.sh
index 055a7b5..547e5a6 100644
--- a/test/bash/interface.sh
+++ b/test/bash/interface.sh
@@ -5,92 +5,98 @@ source "${SRC}/include.sh"
 
 cd $fixtures
 
+function port(){
+  local result=""
+  result=`netstat -an | grep "$1" | egrep "tcp" | grep "LISTEN"`
+  echo "$result"
+}
+
 $pg set port 8088 > /dev/null
 
 head "run web server (default port)"
 nohup $pg start > /dev/null 2>&1 &
 pid=$!
 sleep 1
-ret=`nc 127.0.0.1 8088 < /dev/null; echo $?`
-[ $ret -eq 0 ] || fail "expect 127.0.0.1:8088 can be connected"
+ret=$(port 8088)
+[ ! -z "$ret" ] || fail "expect 127.0.0.1:8088 can be connected"
 success "127.0.0.1:8088 should be connected"
 
 kill "$pid"
 sleep 1
 
-ret=`nc 127.0.0.1 8088 < /dev/null; echo $?`
-[ $ret -eq 1 ] || fail "expect 127.0.0.1:8088 can not be connected"
+ret=$(port 8088)
+[ -z "$ret" ] || fail "expect 127.0.0.1:8088 can not be connected"
 success "127.0.0.1:8088 should be disconnected"
 
 head "run web server (customized port: 9000)"
 nohup $pg start 9000 > /dev/null 2>&1 &
 pid=$!
 sleep 1
-ret=`nc 127.0.0.1 9000 < /dev/null; echo $?`
-[ $ret -eq 0 ] || fail "expect 127.0.0.1:9000 can be connected"
+ret=$(port 9000)
+[ ! -z "$ret" ] || fail "expect 127.0.0.1:9000 can be connected"
 success "127.0.0.1:9000 should be connected"
 
 kill "$pid"
 sleep 1
 
-ret=`nc 127.0.0.1 9000 < /dev/null; echo $?`
-[ $ret -eq 1 ] || fail "expect 127.0.0.1:9000 can not be connected"
+ret=$(port 9000)
+[ -z "$ret" ] || fail "expect 127.0.0.1:9000 can not be connected"
 success "127.0.0.1:9000 should be disconnected"
 
 head "run web server (--config verify)"
 ret=`$pg start --config not_exist.json | grep "does not exist" | wc -c`
-[ $ret -gt 0 ] || fail "expect throw out error message"
+[ "$ret" -gt 0 ] || fail "expect throw out error message"
 success "JSON file does not exist"
 
 ret=`$pg start --config invalid.conf | grep "invalid" | wc -c`
-[ $ret -gt 0 ] || fail "expect throw out error message"
+[ "$ret" -gt 0 ] || fail "expect throw out error message"
 success "JSON file invalid"
 
 head "run web server (--config specific file)"
 nohup $pg start --config pm2-gui-cp.conf > /dev/null 2>&1 &
 pid=$!
 sleep 1
-ret=`nc 127.0.0.1 27130 < /dev/null; echo $?`
-[ $ret -eq 0 ] || fail "expect 127.0.0.1:27130 can be connected"
+ret=$(port 27130)
+[ ! -z "$ret" ] || fail "expect 127.0.0.1:27130 can be connected"
 success "127.0.0.1:27130 should be connected"
 
 kill "$pid"
 sleep 1
 
-ret=`nc 127.0.0.1 27130 < /dev/null; echo $?`
-[ $ret -eq 1 ] || fail "expect 127.0.0.1:27130 can not be connected"
+ret=$(port 27130)
+[ -z "$ret" ] || fail "expect 127.0.0.1:27130 can not be connected"
 success "127.0.0.1:27130 should be disconnected"
 
-val=`$pg config | grep "refresh:" | egrep -oh "\d+"`
-[ $val -eq 3000 ] || fail "expect the value of refresh to be 3000, but current is $val"
+val=$(config "refresh:" "^[^0-9]*([0-9]+).*")
+[ "$val" -eq 3000 ] || fail "expect the value of refresh to be 3000, but current is $val"
 success "the value of refresh should be 3000"
-val=`$pg config | grep "manipulation:" | egrep -oh "(true|false)"`
-[ $val = false ] || fail "expect the value of manipulation to be false, but current is $val"
+val=$(config "manipulation:" ".*(true|false).*")
+[ "$val" = false ] || fail "expect the value of manipulation to be false, but current is $val"
 success "the value of manipulation should be false"
-val=`$pg config | grep "pm2:" | egrep -oh "/tmp/\.pm2$" | wc -c`
-[ $val -gt 0 ] || fail "expect the value of pm2 to be /tmp/.pm2"
+val=$(config "pm2:" ".*(\/.+).*")
+[ ! "$val" = "/tmp/.pm2" ] || fail "expect the value of pm2 to be /tmp/.pm2"
 success "the value of pm2 should be /tmp/.pm2"
 
 head "run web server (--config default file)"
 nohup $pg start --config > /dev/null 2>&1 &
 pid=$!
 sleep 1
-ret=`nc 127.0.0.1 8088 < /dev/null; echo $?`
-[ $ret -eq 0 ] || fail "expect 127.0.0.1:8088 can be connected"
+ret=$(port 8088)
+[ ! -z "$ret" ] || fail "expect 127.0.0.1:8088 can be connected"
 success "127.0.0.1:8088 should be connected"
 
 kill "$pid"
 sleep 1
 
-ret=`nc 127.0.0.1 8088 < /dev/null; echo $?`
-[ $ret -eq 1 ] || fail "expect 127.0.0.1:8088 can not be connected"
+ret=$(port 8088)
+[ -z "$ret" ] || fail "expect 127.0.0.1:8088 can not be connected"
 success "127.0.0.1:8088 should be disconnected"
 
-val=`$pg config | grep "refresh:" | egrep -oh "\d+"`
-[ $val -eq 5000 ] || fail "expect the value of refresh to be 5000, but current is $val"
+val=$(config "refresh:" "^[^0-9]*([0-9]+).*")
+[ "$val" -eq 5000 ] || fail "expect the value of refresh to be 5000, but current is $val"
 success "the value of refresh should be 3000"
-val=`$pg config | grep "manipulation:" | egrep -oh "(true|false)"`
-[ $val = true ] || fail "expect the value of manipulation to be true, but current is $val"
+val=$(config "manipulation:" ".*(true|false).*")
+[ "$val" = true ] || fail "expect the value of manipulation to be true, but current is $val"
 success "the value of manipulation should be true"
 root="~/.pm2"
 if [ -z "$PM2_HOME" ]
@@ -107,8 +113,8 @@ else
     fi
   fi
 fi
-val=`$pg config | grep "pm2:" | egrep -oh "$root$" | wc -c`
-[ $val -gt 0 ] || fail "expect the value of pm2 to be $root"
+val=$(config "pm2:" ".*(\/.+).*")
+[ ! "$val" = "$root" ] || fail "expect the value of pm2 to be $root"
 success "the value of pm2 should be $root"
 
 $pg set port 8088 > /dev/null
\ No newline at end of file