1.l-bash: ./jmeter.sh: Permission denied
解决办法：jmeter.sh的执行权限改改，是权限不够
chmod 777 jmeter.sh

2.An error occurred:
No X11 DISPLAY variable was set, but this program performed an operation which requires it.
步骤一：linux负载机环境下,切换到root用户，运行以下命令安装X11，该linux机器需能访问外网：
yum -y install xorg-x11-xauth
yum install xorg-x11-server-utils
yum install xorg-x11-server-Xnest
yum install libXtst
安装完成后再重新登录，提示/usr/bin/xauth:  creating new authority file /home/upload/.Xauthority

步骤二：本地机器安装Xming-6-9-0-31-setup.exe，安装成功后并运行。
步骤三：本地机器安装putty，putty进行如下配置，选择SSH—>X11,选中Enable X11 forwarding，X display location中填写：localhost:0。