在Ubuntu中，我怎样才能从终端打开应用程序，只有它还没有运行？

Question

I'm using a basic script to open up the apps I need for development and I have to open an editor, but only if it's not already running.

How can I first determine if sublime is up before running the application as follows:

subl <filename>

Answer 1

我认为你总是可以通过'ps ax | grep'确定它运行，对吗？

Answer 2

I think I've got one solution:

SERVICE=$1
if [ `pgrep $SERVICE` ]
  then
    echo "$SERVICE is running."
  else
    echo "$SERVICE is not running."
fi

Answer 3

You might want to have a look at ps ?

if [[ $(ps -e | grep "the thing you want") -ne 0 ]]
#checks if there is anything returned
then
  subl <filename>
fi

This correctness will be based on how "exact" you search...