/Shell/Bash/Bash swap two columns in a file

Bash swap two columns in a file

# Example usage:
awk '{t=$1; $1=$2; $2=t; print;}' input_file # Swap column 1 and column 2
# This assigns column 1 to a dummy variable t, makes column 1 equal
# to column 2, and then assigns the contents of t to column 2

Source: stackoverflow.com

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