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Full Discussion: How to add missing value?
Top Forums Shell Programming and Scripting How to add missing value? Post 302949890 by RavinderSingh13 on Friday 17th of July 2015 08:49:44 AM
Old 07-17-2015
Hello Ken6503,

You haven't shown us the expected output, so I am not sure either we need to put both conditions of having number of fields lesser than 5 + $NF(last field's) value should be grater than 2. But by seeing your expression I have made following.
Code:
 awk -F, '{if(NF<5 && $NF+0 > 2){$2="XXX" OFS $2;print;next}} 1' OFS=,  Input_file

Output will be as follows.
Code:
aaa,bbb,ccc,fff
aaa,bbb,ccc,ddd
111,XXX,222,333,444
111,XXX,222,333,444
111,222,333,444,555

Thanks,
R. Singh

Last edited by RavinderSingh13; 07-17-2015 at 10:07 AM..
This User Gave Thanks to RavinderSingh13 For This Post:
 

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COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME
colrm -- remove columns from a file SYNOPSIS
colrm [start [stop]] DESCRIPTION
The colrm utility removes selected columns from the lines of a file. A column is defined as a single character in a line. Input is read from the standard input. Output is written to the standard output. If only the start column is specified, columns numbered less than the start column will be written. If both start and stop columns are spec- ified, columns numbered less than the start column or greater than the stop column will be written. Column numbering starts with one, not zero. Tab characters increment the column count to the next multiple of eight. Backspace characters decrement the column count by one. ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7). EXIT STATUS
The colrm utility exits 0 on success, and >0 if an error occurs. SEE ALSO
awk(1), column(1), cut(1), paste(1) HISTORY
The colrm command appeared in 3.0BSD. BSD
August 4, 2004 BSD
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