Need to know, what is the meaning of “<&3” and done < file11 3< file22 in below...

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Need to know, what is the meaning of “


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.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}







0















while IFS= read -r lineA && IFS= read -r lineB <&3



while read -r lineA && read -r lineB <&3



while read lineA && read lineB <&3
do
echo "$lineA"
echo "$lineB"
echo
done < file11 3< file22



This code is working fine. But need to know mentioned query.









share







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    0















    while IFS= read -r lineA && IFS= read -r lineB <&3



    while read -r lineA && read -r lineB <&3



    while read lineA && read lineB <&3
    do
    echo "$lineA"
    echo "$lineB"
    echo
    done < file11 3< file22



    This code is working fine. But need to know mentioned query.









    share







    New contributor



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






















      0












      0








      0








      while IFS= read -r lineA && IFS= read -r lineB <&3



      while read -r lineA && read -r lineB <&3



      while read lineA && read lineB <&3
      do
      echo "$lineA"
      echo "$lineB"
      echo
      done < file11 3< file22



      This code is working fine. But need to know mentioned query.









      share







      New contributor



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











      while IFS= read -r lineA && IFS= read -r lineB <&3



      while read -r lineA && read -r lineB <&3



      while read lineA && read lineB <&3
      do
      echo "$lineA"
      echo "$lineB"
      echo
      done < file11 3< file22



      This code is working fine. But need to know mentioned query.







      shell





      share







      New contributor



      Gaurav 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



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







      share



      share






      New contributor



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








      asked 9 mins ago









      GauravGaurav

      1




      1




      New contributor



      Gaurav is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      New contributor




      Gaurav is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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