sed - How to replace second column of csv file with a specific value "XYX" -

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to replace last field of csv file xyz use following command:

awk -f, '{$nf="xyz";}1' ofs=, file

how can overwrite second column of file value xyz?

in awk variable nf number of fields on current line. can refer each field $1,$2...$nf $1 first field , $2 second field, upto $nf last field on current line (i.e. if nf 5 $nf $5).

$ cat file 1,2,3,4,5  $ awk '$2="xyx"' fs=, ofs=, file 1,xyx,3,4,5

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