Linked by Thom Holwerda on Thu 10th Aug 2006 16:26 UTC, submitted by IdaAshley
Much of Linux system administration involves tediously combing through plain-text configuration files. Fortunately, Linux has a rich array of UNIX-derived data extraction utilities, including head, tail, grep, egrep, fgrep, cut, paste, join, awk, and more. This article uses real-world examples that show how these simple command-line programs can make you a better sysadmin. Also look at each data extraction utility and its options, and learn how to apply them to typical day-to-day work files.