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Top Forums Shell Programming and Scripting Multiple file merge by column Post 302769777 by atzounis on Wednesday 13th of February 2013 10:50:43 AM
Old 02-13-2013
I came up with this code:

Code:
 awk '{a[FNR]=a[FNR] FS $X;t=(FNR>T)?FNR:t}END {for (i=1;i<=t;i++) print a[i]}' *.dat > output.txt

It works perfectly for extracting the first and second columns ( X=1 or =2) but for X = 3 it puts again the column one at the end of the other, not side by side. What am I missing?
 

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END(7)								   SQL Commands 							    END(7)

NAME
END - commit the current transaction SYNOPSIS
END [ WORK | TRANSACTION ] DESCRIPTION
END commits the current transaction. All changes made by the transaction become visible to others and are guaranteed to be durable if a crash occurs. This command is a PostgreSQL extension that is equivalent to COMMIT [commit(7)]. PARAMETERS
WORK TRANSACTION Optional key words. They have no effect. NOTES
Use ROLLBACK [rollback(7)] to abort a transaction. Issuing END when not inside a transaction does no harm, but it will provoke a warning message. EXAMPLES
To commit the current transaction and make all changes permanent: END; COMPATIBILITY
END is a PostgreSQL extension that provides functionality equivalent to COMMIT [commit(7)], which is specified in the SQL standard. SEE ALSO
BEGIN [begin(7)], COMMIT [commit(7)], ROLLBACK [rollback(7)] SQL - Language Statements 2010-05-14 END(7)
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