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# Example usage:
# Say you want to do arithmetic operations on the STDOUT of a command. For
# example, get the number of lines in a file divided by 4. IMO, the easiest
# way to do this is with awk, e.g.:
wc -l your_file.txt | awk '{print $1/4}'
# A summary of other operations you can do in Awk are listed here:
# https://www.gnu.org/software/gawk/manual/html_node/Arithmetic-Ops.html