"Speedy Hacking" is especially useful in the
Unix Sys Admin arena, probably more so than in a "real" Software Engineering context.
There are often times when a quick and dirty sh/awk/perl
script can save the day.
A few examples:
Quick hacks during system outages: ps -elf | sort -rn +9 (find top memory pigs)
Being able to cobble up an LWP script to page you when
a backup is finished, allowing you to work on other items
in the meantime
Various uses of perl hashes and sort() on log files. Perhaps to find out very quickly which IP address is flooding your webserver during a hack attack. Perhaps to
answer some last minute question for a Marketing VP. ( Who are the top 10 domains for the email addresses on our mailing list ?)
More quick and dirty perl, like filtering and summarizing sar output when your Oracle database is
sucking wind, and some Business Analyst is breathing down
your neck.