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Full Discussion: Count Columns and If less add new column
Top Forums Shell Programming and Scripting Count Columns and If less add new column Post 302576436 by kmsekhar on Friday 25th of November 2011 01:18:19 AM
Old 11-25-2011
Count Commas and Add New Comma If count less than 3
Hi All,

My Input.txt should have always 4 columns in some cases i may not get all the 4columns data.
My requirement is if columns as not equal to 4 then append new column delimiter.

Input.txt
Code:
A,1,2
B,1,2,3
C,1

Desired output should be in below format
Output.txt
Code:
A,1,2,
B,1,2,3
C,1,,

I had tried awk '$0=$0OFS NF-1' FS=, FILENAME

Thanks in advance

---------- Post updated at 11:48 AM ---------- Previous update was at 10:35 AM ----------

Got the solution

DEFAULT=4
j=1
for i in `awk -F"," '{print NF}' Final.txt`
do
final=`awk -F"," '{if( NR == '$j' ) print $0}' Final.txt`
while [ $i -lt $DEFAULT ]
do
final=$final","
i=$(($i + 1))
done
echo "$final" > DUMMY.txt
j=$(($j + 1))
done
mv DUMMY.txt Final.txt
Last edited by kmsekhar; 11-25-2011 at 01:30 AM..
 

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TRUNCATE(1)							   User Commands						       TRUNCATE(1)

NAME

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SYNOPSIS

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DESCRIPTION

       Shrink or extend the size of each FILE to the specified size

       A FILE argument that does not exist is created.

       If  a  FILE  is	larger than the specified size, the extra data is lost.  If a FILE is shorter, it is extended and the extended part (hole)
       reads as zero bytes.

       Mandatory arguments to long options are mandatory for short options too.

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       --help display this help and exit

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AUTHOR

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REPORTING BUGS

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COPYRIGHT

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SEE ALSO

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