awk outputs the second-to-last column judgment and outputs all rows that meet the conditions

Awk judges and outputs all rows that meet the conditions according to the penultimate column

$NF
Represents the last numberThe penultimate line means $(NF-1)
remember to add parentheses
-F','
Use comma as separator
wc -l
Count the number of eligible rows

cat data.csv | awk -F',' '{if($(NF-1) == 1){ print $0}}' 

cat data.csv | awk -F',' '{if($(NF-1) == 1){ print $0}}'  | wc - l

Statistics rows

After a long time, I found that it was inseparable from shell data processing. Large files cannot be opened in win.
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