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Concatenate multiple lines based.

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Top Forums Shell Programming and Scripting Concatenate multiple lines based.
# 1  
Old 06-30-2010
Concatenate multiple lines based.
Hello,

I have been searching the forum for concatenation based on condition. I have been close enough but not got th exact one.

infile:
-----
Code:
DB_Name ABC (X,
Y,Z).
DB_Name DEF (T).
DB_Name GHI (U
,V,W).

Desired Output file should be:
---------------------------
Code:
DB_Name ABC (X,Y,Z).
DB_Name DEF (T).
DB_Name GHI (U,V,W).

Basically idea behind is
- If the line does not start with string "DB_Name" then append that line to previous line and if it does start with "DB_Name" print that line.

Thanks in advance.
Indrajit


Moderator's Comments:
Mod Comment Please use code tags!
# 2  
Old 06-30-2010
Code:
awk '/DB_Name/{printf "\n"$0;next}{printf $0}' file

Output isn't ideal, but it is easy to fix.
# 3  
Old 06-30-2010
Thanks for the quicky but the output looks complex:

Code:
DB_Name ABC (X,Y,Z).DB_Name 
DEF (T).DB_Name GHI (U,V,W).

whereas i wanted to have
Code:
DB_Name ABC (X,Y,Z).
DB_Name DEF (T).
DB_Name GHI (U,V,W).

because I will be using this file as input to my database script.

Thanks
Last edited by Scott; 06-30-2010 at 07:45 PM.. Reason: Code tags
# 4  
Old 06-30-2010
Check two times if you wrote the code corectly:
Code:
awk '/DB_Name/{printf "\n"$0;next}{printf $0}' file

The "\n" is before $0, so new line goes alway before "DB_Name" therefore it can't produce output you provided: DB_Name ABC (X,Y,Z).DB_Name.
# 5  
Old 06-30-2010
I am using the same way you have given:

Code:
awk '/DB_Name/{printf "\n"$0;next}{printf $0}' Q1_Expln_file_diag

Output is

Code:
DEV_EIS_T.ProdtAtSlsOrg COLUMN SLSORGNBR.DEV_EIS_T.ProdtAtSlsOrg COLUMN (PARTITION).DEV_EIS_T.ProdtAtSlsOrg COLUMN (PRODTCD, DIVCD ,ACTVIND).  DEV_EIS_T.ProdtAtSlsOrg COLUMN (PRODTCD, DIVCD).

I am expecting:
Code:
DEV_EIS_T.ProdtAtSlsOrg COLUMN SLSORGNBR.
DEV_EIS_T.ProdtAtSlsOrg COLUMN (PARTITION).
DEV_EIS_T.ProdtAtSlsOrg COLUMN (PRODTCD, DIVCD ,ACTVIND).  
DEV_EIS_T.ProdtAtSlsOrg COLUMN (PRODTCD, DIVCD).

Last edited by Scott; 06-30-2010 at 07:46 PM.. Reason: Code tags
# 6  
Old 06-30-2010
You put "DB_Name" in the first post, so I assumed it is how your file looks like... So for your real file this should work:
Code:
awk '/DEV_EIS_T/{printf "\n"$0;next}{printf $0}' file

Next time, if you expect accurate answers, please provide accurate information.
Last edited by bartus11; 06-30-2010 at 06:43 PM.. Reason: fixed
# 7  
Old 06-30-2010
Sorry but I was assuming that text string wont make difference like

Code:
DEV_EIS_T.ProdtAtSlsOrg COLUMN SLSORGNBR.

DB_Name.ProdtAtSlsOrg COLUMN SLSORGNBR.

would require same logic and if we just change the string that we want it would serve the purpose.

I tried with the new command and the output is same as previous:

Code:
DEV_EIS_T.ProdtAtSlsOrg COLUMN SLSORGNBR.DEV_EIS_T.ProdtAtSlsOrg COLUMN (PARTITION).DEV_EIS_T.ProdtAtSlsOrg COLUMN (PRODTCD, DIVCD ,ACTVIND).  DEV_EIS_T.ProdtAtSlsOrg COLUMN (PRODTCD, DIVCD)

Moderator's Comments:
Mod Comment Code tags, please...
Last edited by Scott; 06-30-2010 at 07:51 PM.. Reason: Code tags
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