Why doesn't i3bar execute this code properly?












0















I was writing a blocklet for music players for i3blocks. I faced an issue with the following code snippets.



Works



if [[ $(playerctl status | grep -o "No players found") != "" ]]; then
exit 3;
fi


Doesn't work



if [[ "$(playerctl status 2>&1)" = "No players found" ]]; then
exit 3;
fi


Why does the grep code snippet work while the one involving File descriptors doesn't? Does i3 not support them?




Both snippets work as expected in a bash terminal.










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    0















    I was writing a blocklet for music players for i3blocks. I faced an issue with the following code snippets.



    Works



    if [[ $(playerctl status | grep -o "No players found") != "" ]]; then
    exit 3;
    fi


    Doesn't work



    if [[ "$(playerctl status 2>&1)" = "No players found" ]]; then
    exit 3;
    fi


    Why does the grep code snippet work while the one involving File descriptors doesn't? Does i3 not support them?




    Both snippets work as expected in a bash terminal.










    share







    New contributor




    Utkarsh Verma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























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      0








      I was writing a blocklet for music players for i3blocks. I faced an issue with the following code snippets.



      Works



      if [[ $(playerctl status | grep -o "No players found") != "" ]]; then
      exit 3;
      fi


      Doesn't work



      if [[ "$(playerctl status 2>&1)" = "No players found" ]]; then
      exit 3;
      fi


      Why does the grep code snippet work while the one involving File descriptors doesn't? Does i3 not support them?




      Both snippets work as expected in a bash terminal.










      share







      New contributor




      Utkarsh Verma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I was writing a blocklet for music players for i3blocks. I faced an issue with the following code snippets.



      Works



      if [[ $(playerctl status | grep -o "No players found") != "" ]]; then
      exit 3;
      fi


      Doesn't work



      if [[ "$(playerctl status 2>&1)" = "No players found" ]]; then
      exit 3;
      fi


      Why does the grep code snippet work while the one involving File descriptors doesn't? Does i3 not support them?




      Both snippets work as expected in a bash terminal.








      bash i3 file-descriptors





      share







      New contributor




      Utkarsh Verma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.










      share







      New contributor




      Utkarsh Verma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.








      share



      share






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      Utkarsh Verma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      asked 2 mins ago









      Utkarsh VermaUtkarsh Verma

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      63




      New contributor




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      New contributor





      Utkarsh Verma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Utkarsh Verma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






















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