How to separate output of variables [closed]











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0
down vote

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I want to write a script to separate outputs. Output should be like this:



192.168.94.139  
middle of loop

192.168.94.140
middle of loop


After separating to the new line I want to run some commands before execute other one.



My code,



for INPUT in $SERVER_SELECTION 
do

echo $INPUT | tr , 'n'
echo "middle of loop "

done

echo "end of loop "


How can I modify this to take above output.










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closed as unclear what you're asking by Soren A, guiverc, steeldriver, Zanna, Eric Carvalho Dec 6 at 16:27


Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.















  • I have some inputs in "SERVER_SELECTION" variable those are 192.168.94.139, 192.168.94.140. When I use variable to get the output it prints as in a line. Then I used tr , 'n' command to separate lines. But I want execute some commands under 192.168.94.139 and also 192.168.94.140.
    – Janith
    Dec 5 at 8:07








  • 1




    put IFS=',' before "for" and remove "tr" command, this should split SERVER_SELECTION and INPUT will contains one ip at once
    – Lety
    Dec 5 at 9:50










  • It works fine, then how to run some scripts by taking particular ip address?
    – Janith
    Dec 5 at 11:11















up vote
0
down vote

favorite












I want to write a script to separate outputs. Output should be like this:



192.168.94.139  
middle of loop

192.168.94.140
middle of loop


After separating to the new line I want to run some commands before execute other one.



My code,



for INPUT in $SERVER_SELECTION 
do

echo $INPUT | tr , 'n'
echo "middle of loop "

done

echo "end of loop "


How can I modify this to take above output.










share|improve this question















closed as unclear what you're asking by Soren A, guiverc, steeldriver, Zanna, Eric Carvalho Dec 6 at 16:27


Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.















  • I have some inputs in "SERVER_SELECTION" variable those are 192.168.94.139, 192.168.94.140. When I use variable to get the output it prints as in a line. Then I used tr , 'n' command to separate lines. But I want execute some commands under 192.168.94.139 and also 192.168.94.140.
    – Janith
    Dec 5 at 8:07








  • 1




    put IFS=',' before "for" and remove "tr" command, this should split SERVER_SELECTION and INPUT will contains one ip at once
    – Lety
    Dec 5 at 9:50










  • It works fine, then how to run some scripts by taking particular ip address?
    – Janith
    Dec 5 at 11:11













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I want to write a script to separate outputs. Output should be like this:



192.168.94.139  
middle of loop

192.168.94.140
middle of loop


After separating to the new line I want to run some commands before execute other one.



My code,



for INPUT in $SERVER_SELECTION 
do

echo $INPUT | tr , 'n'
echo "middle of loop "

done

echo "end of loop "


How can I modify this to take above output.










share|improve this question















I want to write a script to separate outputs. Output should be like this:



192.168.94.139  
middle of loop

192.168.94.140
middle of loop


After separating to the new line I want to run some commands before execute other one.



My code,



for INPUT in $SERVER_SELECTION 
do

echo $INPUT | tr , 'n'
echo "middle of loop "

done

echo "end of loop "


How can I modify this to take above output.







bash scripts






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Dec 5 at 18:37









Zanna

49.4k13128236




49.4k13128236










asked Dec 5 at 6:46









Janith

697




697




closed as unclear what you're asking by Soren A, guiverc, steeldriver, Zanna, Eric Carvalho Dec 6 at 16:27


Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.






closed as unclear what you're asking by Soren A, guiverc, steeldriver, Zanna, Eric Carvalho Dec 6 at 16:27


Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.














  • I have some inputs in "SERVER_SELECTION" variable those are 192.168.94.139, 192.168.94.140. When I use variable to get the output it prints as in a line. Then I used tr , 'n' command to separate lines. But I want execute some commands under 192.168.94.139 and also 192.168.94.140.
    – Janith
    Dec 5 at 8:07








  • 1




    put IFS=',' before "for" and remove "tr" command, this should split SERVER_SELECTION and INPUT will contains one ip at once
    – Lety
    Dec 5 at 9:50










  • It works fine, then how to run some scripts by taking particular ip address?
    – Janith
    Dec 5 at 11:11


















  • I have some inputs in "SERVER_SELECTION" variable those are 192.168.94.139, 192.168.94.140. When I use variable to get the output it prints as in a line. Then I used tr , 'n' command to separate lines. But I want execute some commands under 192.168.94.139 and also 192.168.94.140.
    – Janith
    Dec 5 at 8:07








  • 1




    put IFS=',' before "for" and remove "tr" command, this should split SERVER_SELECTION and INPUT will contains one ip at once
    – Lety
    Dec 5 at 9:50










  • It works fine, then how to run some scripts by taking particular ip address?
    – Janith
    Dec 5 at 11:11
















I have some inputs in "SERVER_SELECTION" variable those are 192.168.94.139, 192.168.94.140. When I use variable to get the output it prints as in a line. Then I used tr , 'n' command to separate lines. But I want execute some commands under 192.168.94.139 and also 192.168.94.140.
– Janith
Dec 5 at 8:07






I have some inputs in "SERVER_SELECTION" variable those are 192.168.94.139, 192.168.94.140. When I use variable to get the output it prints as in a line. Then I used tr , 'n' command to separate lines. But I want execute some commands under 192.168.94.139 and also 192.168.94.140.
– Janith
Dec 5 at 8:07






1




1




put IFS=',' before "for" and remove "tr" command, this should split SERVER_SELECTION and INPUT will contains one ip at once
– Lety
Dec 5 at 9:50




put IFS=',' before "for" and remove "tr" command, this should split SERVER_SELECTION and INPUT will contains one ip at once
– Lety
Dec 5 at 9:50












It works fine, then how to run some scripts by taking particular ip address?
– Janith
Dec 5 at 11:11




It works fine, then how to run some scripts by taking particular ip address?
– Janith
Dec 5 at 11:11










2 Answers
2






active

oldest

votes

















up vote
1
down vote



accepted










put IFS=',' before for and remove tr command, this should split SERVER_SELECTION and INPUT will contains one ip at once.



IFS=','
for INPUT in $SERVER_SELECTION
do
echo $INPUT
<path to script> $INPUT # call other script and use INPUT as parameter
echo "middle of loop "
done
echo "end of loop"


IFS stands for "internal field separator". It is used by the shell to determine how to do word splitting, i. e. how to recognize word boundaries.






share|improve this answer





















  • This worked for me. Thank you so much. Is there a alternative to IFS command?
    – Janith
    Dec 5 at 11:30


















up vote
0
down vote













I don't know what exactly your trying to do but merely doing this:



echo "$INPUT"
echo "middle of loop "


should produce that result. Again maybe a read from file is what you want! Then you should do



while read -r INPUT
do

echo "$INPUT"
echo "middle of loop "

done < "$SERVER_SELECTION"

echo "end of loop "





share|improve this answer






























    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes








    up vote
    1
    down vote



    accepted










    put IFS=',' before for and remove tr command, this should split SERVER_SELECTION and INPUT will contains one ip at once.



    IFS=','
    for INPUT in $SERVER_SELECTION
    do
    echo $INPUT
    <path to script> $INPUT # call other script and use INPUT as parameter
    echo "middle of loop "
    done
    echo "end of loop"


    IFS stands for "internal field separator". It is used by the shell to determine how to do word splitting, i. e. how to recognize word boundaries.






    share|improve this answer





















    • This worked for me. Thank you so much. Is there a alternative to IFS command?
      – Janith
      Dec 5 at 11:30















    up vote
    1
    down vote



    accepted










    put IFS=',' before for and remove tr command, this should split SERVER_SELECTION and INPUT will contains one ip at once.



    IFS=','
    for INPUT in $SERVER_SELECTION
    do
    echo $INPUT
    <path to script> $INPUT # call other script and use INPUT as parameter
    echo "middle of loop "
    done
    echo "end of loop"


    IFS stands for "internal field separator". It is used by the shell to determine how to do word splitting, i. e. how to recognize word boundaries.






    share|improve this answer





















    • This worked for me. Thank you so much. Is there a alternative to IFS command?
      – Janith
      Dec 5 at 11:30













    up vote
    1
    down vote



    accepted







    up vote
    1
    down vote



    accepted






    put IFS=',' before for and remove tr command, this should split SERVER_SELECTION and INPUT will contains one ip at once.



    IFS=','
    for INPUT in $SERVER_SELECTION
    do
    echo $INPUT
    <path to script> $INPUT # call other script and use INPUT as parameter
    echo "middle of loop "
    done
    echo "end of loop"


    IFS stands for "internal field separator". It is used by the shell to determine how to do word splitting, i. e. how to recognize word boundaries.






    share|improve this answer












    put IFS=',' before for and remove tr command, this should split SERVER_SELECTION and INPUT will contains one ip at once.



    IFS=','
    for INPUT in $SERVER_SELECTION
    do
    echo $INPUT
    <path to script> $INPUT # call other script and use INPUT as parameter
    echo "middle of loop "
    done
    echo "end of loop"


    IFS stands for "internal field separator". It is used by the shell to determine how to do word splitting, i. e. how to recognize word boundaries.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered Dec 5 at 11:27









    Lety

    4,93521730




    4,93521730












    • This worked for me. Thank you so much. Is there a alternative to IFS command?
      – Janith
      Dec 5 at 11:30


















    • This worked for me. Thank you so much. Is there a alternative to IFS command?
      – Janith
      Dec 5 at 11:30
















    This worked for me. Thank you so much. Is there a alternative to IFS command?
    – Janith
    Dec 5 at 11:30




    This worked for me. Thank you so much. Is there a alternative to IFS command?
    – Janith
    Dec 5 at 11:30












    up vote
    0
    down vote













    I don't know what exactly your trying to do but merely doing this:



    echo "$INPUT"
    echo "middle of loop "


    should produce that result. Again maybe a read from file is what you want! Then you should do



    while read -r INPUT
    do

    echo "$INPUT"
    echo "middle of loop "

    done < "$SERVER_SELECTION"

    echo "end of loop "





    share|improve this answer



























      up vote
      0
      down vote













      I don't know what exactly your trying to do but merely doing this:



      echo "$INPUT"
      echo "middle of loop "


      should produce that result. Again maybe a read from file is what you want! Then you should do



      while read -r INPUT
      do

      echo "$INPUT"
      echo "middle of loop "

      done < "$SERVER_SELECTION"

      echo "end of loop "





      share|improve this answer

























        up vote
        0
        down vote










        up vote
        0
        down vote









        I don't know what exactly your trying to do but merely doing this:



        echo "$INPUT"
        echo "middle of loop "


        should produce that result. Again maybe a read from file is what you want! Then you should do



        while read -r INPUT
        do

        echo "$INPUT"
        echo "middle of loop "

        done < "$SERVER_SELECTION"

        echo "end of loop "





        share|improve this answer














        I don't know what exactly your trying to do but merely doing this:



        echo "$INPUT"
        echo "middle of loop "


        should produce that result. Again maybe a read from file is what you want! Then you should do



        while read -r INPUT
        do

        echo "$INPUT"
        echo "middle of loop "

        done < "$SERVER_SELECTION"

        echo "end of loop "






        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Dec 5 at 7:36

























        answered Dec 5 at 7:28









        George Udosen

        19.1k94266




        19.1k94266















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