Linux commands for awk
Printing and Filtering:
awk '{print}' file: Print the entire file.awk '/pattern/ {print}' file: Print lines matching a pattern.awk '{print $1, $2}' file: Print specific columns (e.g., 1st and 2nd columns).awk '$3 > 10 {print}' file: Print lines where the 3rd column is greater than 10.awk 'length($0) > 80 {print}' file: Print lines longer than 80 characters.Variables and Arithmetic:
awk '{sum += $1} END {print sum}' file: Calculate and print the sum of values in a column.awk '{avg += $1; count++} END {print avg/count}' file: Calculate and print the average of values in a column.awk '{if ($1 > 10) print $1; else print "N/A"}' file: Use conditional statements to control printing.awk '{total = $2 * $3; print total}' file: Perform arithmetic operations on columns.
Formatting and Output:
awk '{printf "%-10s %5d\n", $1, $2}' file: Format and print columns with specific widths.awk '{print NR, $0}' file: Print line numbers with each line.awk 'BEGIN {FS=","; OFS="\t"} {print $1, $2}' file: Set field separators (input and output) to customize data processing.
Regular Expressions:
awk '/^pattern/ {print}' file: Print lines starting with a specific pattern.awk '/pattern$/ {print}' file: Print lines ending with a specific pattern.awk '/pattern1/ && /pattern2/ {print}' file: Print lines matching multiple patterns.
