1

I am working in the following scripto to activate the front end and back end of my project as follows:

#!/bin/bash
cd /Users/perf-fe/
source my_project_34/bin/activate
npm start 
&&
cd /Users/perf-be/
export FLASK_APP=router.py
flask run

However it is not working, It is showing just the first part:

#!/bin/bash
cd /Users/perf-fe/
source my_project_34/bin/activate
npm start 
&&

Since the first process occupies the entire terminal, I would like to appreciate suggestions

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6
  • What do you think the line with && will do and what do you want it to do? Commented May 25, 2018 at 19:04
  • @Jesse_b I am using that in order to continue with the following commands Commented May 25, 2018 at 19:06
  • It should be giving a syntax error. That is not a valid use of && Commented May 25, 2018 at 19:07
  • @neo33 you want to make the: npm start run in background right? Commented May 25, 2018 at 19:13
  • @vfbsilva yes I want that, something to return the control of the terminal Commented May 25, 2018 at 19:13

1 Answer 1

Reset to default
6

You probably want to start the first process in its own job, and then execute the second:

cd /Users/perf-fe/
source my_project_34/bin/activate
npm start &
cd /Users/perf-be/
export FLASK_APP=router.py
flask run

The & tells the shell to run the previous command as a background job, and to continue with the next command even though the prior is still running.

This is distinct from &&, which is a syntax error as you present it. Its use is between two commands, to execute the second if and only if the exit code of the first is zero.

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