/Shell/Bash/Bash add or subtract one column from another

Bash add or subtract one column from another

# Basic syntax:
awk 'BEGIN {set_delimiter}; {print $column# +_or_- $column#}' input_file

# Example usage:
awk 'BEGIN {OFS="\t"}; {print $1 - $2}' input_file
# Set the delimiter to tab-delimited, print column 1 minus column 2

awk 'BEGIN {OFS="\t"}; {print $0, $1 + $2}' input_file
# Set the delimiter to tab-delimited, print all columns followed by
# column 1 plus column 2

Source: linuxquestions.org

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