I'm trying to increase the last character in the third row
This is my input file
33981 Juan Robles Garcia 5 1
33982 Lucas Robles Garcia 3 0
33983 Alba Robles Garcia 3 0
This would be the output file
33981 Juan Robles Garcia 5 1
33982 Lucas Robles Garcia 3 0
33983 Alba Robles Garcia 3 1
If current row is third row (NR==3) then increment value by one in last column ($NF). In any case, output the whole row (print).
In any case, prints the entire line .
awk '{if (NR==3) {$NF++}; {print}}' file
or shorter
awk 'NR==3 {$NF++} {print}' file
or shorter
awk 'NR==3 {$NF++}1' file
Output:
33981 Juan Robles Garcia 5 1
33982 Lucas Robles Garcia 3 0
33983 Alba Robles Garcia 3 1
See: 8 Powerful Awk Built-in Variables – FS, OFS, RS, ORS, NR, NF, FILENAME, FNR