Different shell prompt than usual in Linux terminal

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  function fun1(){
      return 0;
  }
  
  function fun2(){
      return 1;
  }
  
  if  fun1  && fun2  ;then 
  echo "success"
  else 
  echo "failure"
  fi
  

  which works fine.. I need to wrap this up in double brackets. I am trying to do like this.

  if  [[ fun1 ]]  && [[ fun2 ]] ;then 
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  I have a file which was created by another scripts with file names. Only thing is that it contains * for similar file names. now i want to iterate a for loop on this file to execute a few operation but i want to do it on different servers for that i simply need exact same name from that file. For this, i used grep and passed it to 'for' loop for one by one execution. But instead before going for the loop it actually executes it on current server itself and gives wrong output. I don't know what i'm missing.

  # node_name=auxiliary;grep -F $node_name /opt/log_automation/ME_log_sheet.csv|awk -F "," '{print $2}'
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  /opt/tpa/logs/localization.log
  /opt/tpa/logs/SPI.*.log
  /opt/tpa/logs/TPA_system.log
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  /opt/tpa/logs/install_SPS.2019.02.09-12:12.log
  /opt/tpa/logs/localization.log
  /opt/tpa/logs/SPI.2019.02.09-12:10.log
  /opt/tpa/logs/TPA_system.log
  

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  -bash: ruby: command not found 
  

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  I have created a javascript file which is named "index.js". Now I usually execute this file using the command prompt(cmd), using Node.js. Please the exact command I use in the code below.

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  C:\myproject>node index.js
  

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