From 84e7b333a946ae91fbeebc1cca8111b58064fb12 Mon Sep 17 00:00:00 2001
From: Jrohy <euvkzx@gmail.com>
Date: Thu, 3 Jan 2019 19:36:39 +0800
Subject: [PATCH] Change judge py3 way

---
 py3_install.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/py3_install.sh b/py3_install.sh
index 073660a..67c865c 100644
--- a/py3_install.sh
+++ b/py3_install.sh
@@ -132,13 +132,15 @@ compileInstall(){
 webInstall(){
     if [[ ${OS} == 'CentOS' || ${OS} == 'Fedora' ]];then
         [[ ${OS} == 'CentOS' ]] && ${PACKAGE_MANAGER} install epel-release -y
-        if [[ -z $(rpm -qa|grep python3) ]];then
+        if ! type python3 >/dev/null 2>&1;then
             ${PACKAGE_MANAGER} install https://centos7.iuscommunity.org/ius-release.rpm -y
             ${PACKAGE_MANAGER} install python36u -y
             ln -s /bin/python3.6 /bin/python3
         fi
     else
-        [[ -z $(dpkg -l|grep python3) ]] && ${PACKAGE_MANAGER} install python3 -y
+        if ! type python3 >/dev/null 2>&1;then
+            ${PACKAGE_MANAGER} install python3 -y
+        fi
         ${PACKAGE_MANAGER} install python3-distutils -y >/dev/null 2>&1
     fi
 }