Linux Command: awk
Pattern-scanning and text-processing language — the Swiss Army knife of shell pipelines
Terminal — Shell Scripting
Command
$
ps aux | awk '$3 > 50.0 {print $2, $11}'
Output
(prints PID and command of processes using >50% CPU)
awk processes text line-by-line with powerful pattern matching and field extraction. Built-in variables: $0 (whole line), $1..$N (fields), NR (row number), NF (field count). For complex logic, full programs with BEGIN/END blocks, loops, and associative arrays.