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How to Merge Multiple Columns in to Two Columns based on Column 1 Value?

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}

1

I have a text file in the below sample format

File.txt

Record1 20 23;

Record2 256;

Record3 45 679 98 1;

The no of columns in each line can vary. I want to change the file with only two columns based on column 1 Value. Below is the target output.

File_2_Columns.txt

Record1 20;

Record1 23;

Record2 256;

Record3 45;

Record3 679;

Record3 98;

Record3 1;

shell-script text-processing

share|improve this question

edited 4 hours ago

steve

14.4k22653

asked 4 hours ago

rkatragarkatraga

175

New contributor

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

add a comment | 

1

I have a text file in the below sample format

File.txt

Record1 20 23;

Record2 256;

Record3 45 679 98 1;

The no of columns in each line can vary. I want to change the file with only two columns based on column 1 Value. Below is the target output.

File_2_Columns.txt

Record1 20;

Record1 23;

Record2 256;

Record3 45;

Record3 679;

Record3 98;

Record3 1;

shell-script text-processing

share|improve this question

edited 4 hours ago

steve

14.4k22653

asked 4 hours ago

rkatragarkatraga

175

New contributor

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

add a comment | 

I have a text file in the below sample format

File.txt

Record1 20 23;

Record2 256;

Record3 45 679 98 1;

The no of columns in each line can vary. I want to change the file with only two columns based on column 1 Value. Below is the target output.

File_2_Columns.txt

Record1 20;

Record1 23;

Record2 256;

Record3 45;

Record3 679;

Record3 98;

Record3 1;

shell-script text-processing

share|improve this question

edited 4 hours ago

steve

14.4k22653

asked 4 hours ago

rkatragarkatraga

175

New contributor

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

Record1 20 23;

Record2 256;

Record3 45 679 98 1;

Record1 20;

Record1 23;

Record2 256;

Record3 45;

Record3 679;

Record3 98;

Record3 1;

share|improve this question

edited 4 hours ago

steve

14.4k22653

asked 4 hours ago

rkatragarkatraga

175

New contributor

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

share|improve this question

edited 4 hours ago

steve

14.4k22653

asked 4 hours ago

rkatragarkatraga

175

New contributor

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

edited 4 hours ago

steve

14.4k22653

edited 4 hours ago

steve

14.4k22653

asked 4 hours ago

rkatragarkatraga

175

New contributor

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

asked 4 hours ago

rkatragarkatraga

175

1 Answer
1

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oldest

votes

4

Here's one way

awk '{for(a=2;a<=NF;a++){printf "%s %s%cn",$1,$a,a==NF ? "" : ";"}}' File.txt >File_2_Columns.txt

Good luck with the rest of your homework ;-)

If teacher is giving extra credits for shortest answer, try

awk '{for(a=2;a<=NF;){printf"%s%cn",$1" "$a,a++-NF?";":""}}' File.txt >File_2_Columns.txt

share|improve this answer

edited 4 hours ago

answered 4 hours ago

stevesteve

14.4k22653

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Thank you so much. Got a better idea on loops inside awk. Code makes a lot of sense.
  
  – rkatraga
  4 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ... or perhaps 'BEGIN{ORS=RS=";n"} {for(a=2; a<=NF;) print $1,$(a++)}'
  
  – steeldriver
  4 hours ago
  

  
  
  
  

add a comment | 

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4

Here's one way

awk '{for(a=2;a<=NF;a++){printf "%s %s%cn",$1,$a,a==NF ? "" : ";"}}' File.txt >File_2_Columns.txt

Good luck with the rest of your homework ;-)

If teacher is giving extra credits for shortest answer, try

awk '{for(a=2;a<=NF;){printf"%s%cn",$1" "$a,a++-NF?";":""}}' File.txt >File_2_Columns.txt

share|improve this answer

edited 4 hours ago

answered 4 hours ago

stevesteve

14.4k22653

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Thank you so much. Got a better idea on loops inside awk. Code makes a lot of sense.
  
  – rkatraga
  4 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ... or perhaps 'BEGIN{ORS=RS=";n"} {for(a=2; a<=NF;) print $1,$(a++)}'
  
  – steeldriver
  4 hours ago
  

  
  
  
  

add a comment | 

4

Here's one way

awk '{for(a=2;a<=NF;a++){printf "%s %s%cn",$1,$a,a==NF ? "" : ";"}}' File.txt >File_2_Columns.txt

Good luck with the rest of your homework ;-)

If teacher is giving extra credits for shortest answer, try

awk '{for(a=2;a<=NF;){printf"%s%cn",$1" "$a,a++-NF?";":""}}' File.txt >File_2_Columns.txt

share|improve this answer

edited 4 hours ago

answered 4 hours ago

stevesteve

14.4k22653

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Thank you so much. Got a better idea on loops inside awk. Code makes a lot of sense.
  
  – rkatraga
  4 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ... or perhaps 'BEGIN{ORS=RS=";n"} {for(a=2; a<=NF;) print $1,$(a++)}'
  
  – steeldriver
  4 hours ago
  

  
  
  
  

add a comment | 

Here's one way

awk '{for(a=2;a<=NF;a++){printf "%s %s%cn",$1,$a,a==NF ? "" : ";"}}' File.txt >File_2_Columns.txt

Good luck with the rest of your homework ;-)

If teacher is giving extra credits for shortest answer, try

awk '{for(a=2;a<=NF;){printf"%s%cn",$1" "$a,a++-NF?";":""}}' File.txt >File_2_Columns.txt

share|improve this answer

edited 4 hours ago

answered 4 hours ago

stevesteve

14.4k22653

awk '{for(a=2;a<=NF;a++){printf "%s %s%cn",$1,$a,a==NF ? "" : ";"}}' File.txt >File_2_Columns.txt

awk '{for(a=2;a<=NF;){printf"%s%cn",$1" "$a,a++-NF?";":""}}' File.txt >File_2_Columns.txt

share|improve this answer

edited 4 hours ago

answered 4 hours ago

stevesteve

14.4k22653

answered 4 hours ago

stevesteve

14.4k22653

answered 4 hours ago

stevesteve

14.4k22653