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Piping two server calls

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0

I am trying to pipe two server runs (one using yarn, one using phoenix/elixir). My code:

sudo service elasticsearch start;
source env/local.env;
iex -S mix phx.server|
cd front-end;
yarn start:dev-ng;

However, I bump into all sorts of errors. My question is how to best set this up. Is there a way to effectively pipe this or do I have to do this in two separate shell scripts (that would be cumbersome)?
Thanks.

scripts sh

share|improve this question

asked 6 hours ago

Paul RousseauPaul Rousseau

183

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Well, piping produces text output from a command or sequence of commands, and sends to consumer - another sequence of commands. So you could do something like echo foo; echo bar; | grep foo; grep bar; if you see what I did there. As for actual commands, piping to cd is kinda pointless - cd doesn't consume stdin stream. So if you need to execute yarn in front-end directory, do that cd command before piping.
  
  – Sergiy Kolodyazhnyy
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks, it worked with the curly brackets: :-}
  
  – Paul Rousseau
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Alright, I'll convert my comment into a proper answer, then
  
  – Sergiy Kolodyazhnyy
  5 hours ago
  

  
  
  
  

add a comment | 

0

I am trying to pipe two server runs (one using yarn, one using phoenix/elixir). My code:

sudo service elasticsearch start;
source env/local.env;
iex -S mix phx.server|
cd front-end;
yarn start:dev-ng;

However, I bump into all sorts of errors. My question is how to best set this up. Is there a way to effectively pipe this or do I have to do this in two separate shell scripts (that would be cumbersome)?
Thanks.

scripts sh

share|improve this question

asked 6 hours ago

Paul RousseauPaul Rousseau

183

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Well, piping produces text output from a command or sequence of commands, and sends to consumer - another sequence of commands. So you could do something like echo foo; echo bar; | grep foo; grep bar; if you see what I did there. As for actual commands, piping to cd is kinda pointless - cd doesn't consume stdin stream. So if you need to execute yarn in front-end directory, do that cd command before piping.
  
  – Sergiy Kolodyazhnyy
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks, it worked with the curly brackets: :-}
  
  – Paul Rousseau
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Alright, I'll convert my comment into a proper answer, then
  
  – Sergiy Kolodyazhnyy
  5 hours ago
  

  
  
  
  

add a comment | 

I am trying to pipe two server runs (one using yarn, one using phoenix/elixir). My code:

sudo service elasticsearch start;
source env/local.env;
iex -S mix phx.server|
cd front-end;
yarn start:dev-ng;

However, I bump into all sorts of errors. My question is how to best set this up. Is there a way to effectively pipe this or do I have to do this in two separate shell scripts (that would be cumbersome)?
Thanks.

scripts sh

share|improve this question

asked 6 hours ago

Paul RousseauPaul Rousseau

183

sudo service elasticsearch start;
source env/local.env;
iex -S mix phx.server|
cd front-end;
yarn start:dev-ng;

share|improve this question

asked 6 hours ago

Paul RousseauPaul Rousseau

183

share|improve this question

asked 6 hours ago

Paul RousseauPaul Rousseau

183

asked 6 hours ago

Paul RousseauPaul Rousseau

183

asked 6 hours ago

Paul RousseauPaul Rousseau

183

1 Answer
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0

Well, piping produces text output from a command or sequence of commands, and sends to consumer - another sequence of commands. So you could do something like echo foo; echo bar; | grep foo; grep bar; if you see what I did there.

As for actual commands, piping to cd is kinda pointless - cd doesn't consume stdin stream. So if you need to execute yarn in the front-end directory, do that cd command before piping.

share|improve this answer

answered 5 hours ago

Sergiy KolodyazhnyySergiy Kolodyazhnyy

75.1k9155327

add a comment | 

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0

Well, piping produces text output from a command or sequence of commands, and sends to consumer - another sequence of commands. So you could do something like echo foo; echo bar; | grep foo; grep bar; if you see what I did there.

As for actual commands, piping to cd is kinda pointless - cd doesn't consume stdin stream. So if you need to execute yarn in the front-end directory, do that cd command before piping.

share|improve this answer

answered 5 hours ago

Sergiy KolodyazhnyySergiy Kolodyazhnyy

75.1k9155327

add a comment | 

0

Well, piping produces text output from a command or sequence of commands, and sends to consumer - another sequence of commands. So you could do something like echo foo; echo bar; | grep foo; grep bar; if you see what I did there.

As for actual commands, piping to cd is kinda pointless - cd doesn't consume stdin stream. So if you need to execute yarn in the front-end directory, do that cd command before piping.

share|improve this answer

answered 5 hours ago

Sergiy KolodyazhnyySergiy Kolodyazhnyy

75.1k9155327

add a comment | 

Well, piping produces text output from a command or sequence of commands, and sends to consumer - another sequence of commands. So you could do something like echo foo; echo bar; | grep foo; grep bar; if you see what I did there.

As for actual commands, piping to cd is kinda pointless - cd doesn't consume stdin stream. So if you need to execute yarn in the front-end directory, do that cd command before piping.

share|improve this answer

answered 5 hours ago

Sergiy KolodyazhnyySergiy Kolodyazhnyy

75.1k9155327

share|improve this answer

answered 5 hours ago

Sergiy KolodyazhnyySergiy Kolodyazhnyy

75.1k9155327

answered 5 hours ago

Sergiy KolodyazhnyySergiy Kolodyazhnyy

75.1k9155327

answered 5 hours ago

Sergiy KolodyazhnyySergiy Kolodyazhnyy

75.1k9155327