A versatile programming language for working on files. More information: https://github.com/onetrueawk/awk.
awk '{print $5}' path/to/file
awk '/foo/ {print $2}' path/to/file
awk -F ',' '{print $NF}' path/to/file
awk '{s+=$1} END {print s}' path/to/file
awk 'NR%3==1' path/to/file
awk '{if ($1 == "foo") print "Exact match foo"; else if ($1 ~ "bar") print "Partial match bar"; else print "Baz"}' path/to/file
awk '($10 >= min_value && $10 <= max_value)'
%-20s
mean: 20 left-align string characters, %6s
means: 6 right-align string characters):awk 'BEGIN {FS=":";printf "%-20s %6s %25s\n", "Name", "UID", "Shell"} $4 >= 1000 {printf "%-20s %6d %25s\n", $1, $4, $7}' /etc/passwd