Here the Linus syntax is used together with windows. Linux commands can be installed on Windows by installing Cygwin.

command1 | command2 - pipe passes the output from command1 an input to command2
grep "PATTERN" SOURCEPATTERN - searches the file or a bunch of files, described by SOURCEPATTERN (e.g. *.txt) for the PATTERN. PATTERN is found case dependant, on any position insede the text
dir /d | grep "ogramme" - searches the directories for the "ogramme" String in it and prints the found lines.