explainshell.com - plan9-cat.1 failedcomments.log %7C sed -e %27s%2F%5E.*mistake%5C%3A %2F%2F%27 %7C grep -iv %27%5C%5B%27 %7C sort %7C uniq -c %7C sort -nr

failedcomments.log %7C sed -e %27s%2F%5E.*mistake%5C%3A %2F%2F%27 %7C grep -iv %27%5C%5B%27 %7C sort %7C uniq -c %7C sort -nr

catenate files