explainshell.com - cat 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

concatenate files and print on the standard output

Concatenate FILE(s), or standard input, to standard output.

With no FILE, or when FILE is -, read standard input.

-e     equivalent to -vE

-v, --show-nonprinting
       use ^ and M- notation, except for LFD and TAB

-n, --number
       number all output lines