<<EOF specify a variable











up vote
0
down vote

favorite












I use a command in bash such as:



gmx_d energy -f ener.edr -o outfile.xvg <<EOF

1

2

3

4

5

EOF


to print in file outfile.xvg 5 different properties. Is there any way to add a variable such as 



gmx_d energy -f ener.edr -o outfile.xvg <<EOF

    $i 

    EOF


and ideally I would like to reproduce the same output with the 5 different properties in the same output file






bash







share|improve this question






















  • Why not just do a loop?
    – ExtraT
    2 days ago










  • You can always include variables in here-documents, and the way is exactly as you have shown. It is just not necessary here.
    – Weijun Zhou
    yesterday










  • For your second sample, you'll need to use "<<-". man bash: If the redirection operator is <<-, then all leading tab characters are stripped from input lines and the line containing delimiter.
    – RudiC
    yesterday















up vote
0
down vote

favorite












I use a command in bash such as:



gmx_d energy -f ener.edr -o outfile.xvg <<EOF

1

2

3

4

5

EOF


to print in file outfile.xvg 5 different properties. Is there any way to add a variable such as 



gmx_d energy -f ener.edr -o outfile.xvg <<EOF

    $i 

    EOF


and ideally I would like to reproduce the same output with the 5 different properties in the same output file






bash







share|improve this question






















  • Why not just do a loop?
    – ExtraT
    2 days ago










  • You can always include variables in here-documents, and the way is exactly as you have shown. It is just not necessary here.
    – Weijun Zhou
    yesterday










  • For your second sample, you'll need to use "<<-". man bash: If the redirection operator is <<-, then all leading tab characters are stripped from input lines and the line containing delimiter.
    – RudiC
    yesterday













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I use a command in bash such as:



gmx_d energy -f ener.edr -o outfile.xvg <<EOF

1

2

3

4

5

EOF


to print in file outfile.xvg 5 different properties. Is there any way to add a variable such as 



gmx_d energy -f ener.edr -o outfile.xvg <<EOF

    $i 

    EOF


and ideally I would like to reproduce the same output with the 5 different properties in the same output file






bash







share|improve this question













I use a command in bash such as:



gmx_d energy -f ener.edr -o outfile.xvg <<EOF

1

2

3

4

5

EOF


to print in file outfile.xvg 5 different properties. Is there any way to add a variable such as 



gmx_d energy -f ener.edr -o outfile.xvg <<EOF

    $i 

    EOF


and ideally I would like to reproduce the same output with the 5 different properties in the same output file






bash




bash






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 2 days ago









Dimitris Mintis

425




425












  • Why not just do a loop?
    – ExtraT
    2 days ago










  • You can always include variables in here-documents, and the way is exactly as you have shown. It is just not necessary here.
    – Weijun Zhou
    yesterday










  • For your second sample, you'll need to use "<<-". man bash: If the redirection operator is <<-, then all leading tab characters are stripped from input lines and the line containing delimiter.
    – RudiC
    yesterday


















  • Why not just do a loop?
    – ExtraT
    2 days ago










  • You can always include variables in here-documents, and the way is exactly as you have shown. It is just not necessary here.
    – Weijun Zhou
    yesterday










  • For your second sample, you'll need to use "<<-". man bash: If the redirection operator is <<-, then all leading tab characters are stripped from input lines and the line containing delimiter.
    – RudiC
    yesterday
















Why not just do a loop?
– ExtraT
2 days ago




Why not just do a loop?
– ExtraT
2 days ago












You can always include variables in here-documents, and the way is exactly as you have shown. It is just not necessary here.
– Weijun Zhou
yesterday




You can always include variables in here-documents, and the way is exactly as you have shown. It is just not necessary here.
– Weijun Zhou
yesterday












For your second sample, you'll need to use "<<-". man bash: If the redirection operator is <<-, then all leading tab characters are stripped from input lines and the line containing delimiter.
– RudiC
yesterday




For your second sample, you'll need to use "<<-". man bash: If the redirection operator is <<-, then all leading tab characters are stripped from input lines and the line containing delimiter.
– RudiC
yesterday










1 Answer
1






active

oldest

votes

















up vote
3
down vote













Since you're trying to provide input (on stdin) to the gmx_d program, pipe it:



printf '%dn' {1..5} | gmx_d energy -f ener.edr -o outfile.xvg


or



seq 5 | gmx_d energy -f ener.edr -o outfile.xvg





share|improve this answer





















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    up vote
    3
    down vote













    Since you're trying to provide input (on stdin) to the gmx_d program, pipe it:



    printf '%dn' {1..5} | gmx_d energy -f ener.edr -o outfile.xvg


    or



    seq 5 | gmx_d energy -f ener.edr -o outfile.xvg





    share|improve this answer

























      up vote
      3
      down vote













      Since you're trying to provide input (on stdin) to the gmx_d program, pipe it:



      printf '%dn' {1..5} | gmx_d energy -f ener.edr -o outfile.xvg


      or



      seq 5 | gmx_d energy -f ener.edr -o outfile.xvg





      share|improve this answer























        up vote
        3
        down vote










        up vote
        3
        down vote









        Since you're trying to provide input (on stdin) to the gmx_d program, pipe it:



        printf '%dn' {1..5} | gmx_d energy -f ener.edr -o outfile.xvg


        or



        seq 5 | gmx_d energy -f ener.edr -o outfile.xvg





        share|improve this answer












        Since you're trying to provide input (on stdin) to the gmx_d program, pipe it:



        printf '%dn' {1..5} | gmx_d energy -f ener.edr -o outfile.xvg


        or



        seq 5 | gmx_d energy -f ener.edr -o outfile.xvg






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 2 days ago









        Jeff Schaller

        37.8k1053122




        37.8k1053122






























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