awk

Text Processing

Pattern scanning and text processing language

Examples

Common usage examples

Print first column of each line

awk '{print $1}' file.txt

Print lines matching pattern

awk '/pattern/ {print $0}' file.txt

Print username and command from ps output

ps aux | awk '{print $1, $11}'

Notes

Powerful for column-based data processing
$1, $2, etc. refer to columns (fields)
$0 refers to the entire line

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