awk - Command to replace specific column of csv file for first 100 rows -


following command replacing second column value e in complete csv file, if want replace in first 100 rows.

awk -f, '{$2="e";}1' ofs=, file

rest of rows of csv file should intact..

awk -f, 'nr<101{$2="e";}1' ofs=, file

nr built-in variable gives either total number of records being processed or line number depending on usage. in above awk example, nr variable has line number. when put pattern nr<101 action become true first 100 lines. once false, default 1 print remaining lines as-is.


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