如何确定gulp手表是否正在运行

Question

我在运行后台的服务器上运行gulp

gulp &

但有时失败了。所以mi问题是：是否有一些命令让gulp询问是否正在运行。像

这样的东西

gulp status

由于

Answer 1

gulp没有什么特别的限制来限制运行多个进程或提醒您已经运行的gulp进程。

使用常规Unix技术检查进程是否正在运行。使用supervisord或runit等管理程序自动重启进程。

#the program pidof will set the variable $? to either
#1 or 0 in bash depending on if it finds a process
#with that name.  It will also print out all the matching
#process IDs to the command line
pidof gulp
echo $?  #1 if there is no process called gulp
         #0 if there is a process called gulp
if pidof gulp; then 
   echo 'gulp is alive';
else
   echo 'we need some support over here!'
   ./node_modules/.bin/gulp watch &
   sleep 3
fi