awk

• awk is a powerful "pattern scanning and processing" language.

• Use it to print a column of a file:

  • E.g. awk '{print $2}' myfile.txt [print 2nd column]

• Use it to do math:

  • E.g. awk '{print $1+$2}' myfile.txt [add columns]

• Use it as a calculator:

  • E.g. echo '' | awk '{print sqrt(2)}'

Notes: