eXTReMe Tracker
Oct 232014

To compute a transpose of an input file, i.e. converting columns to rows and rows to column using bash, you can accomplish that using awk and while loop.

cols=`cat $1 | head -1 | wc -w`;
for i in $(seq 1 $cols);
awk -v "n=$i" '{print $n}' $1 | tr '\n' ' ';  # variable column output
printf "\n";

This example uses a variable to output a specific column from the input.

awk -v "n=$variable" '{print $n} ' input.txt

Will pass the variable to n and the nth column gets printed from input file.