For an article like this, I do not think it is being pedantic to note that to "print a list of all the files with a txt extension in the current directory excep

For an article like this, I do not think it is being pedantic to note that to "print a list of all the files with a txt extension in the current directory except for ignore_me.txt" you do not accomplish that by using the command "ls *.txt | grep -v ignore_me.txt". What if I have the file do_not_ignore_me.txt in that directory ? Thus, I suppose my message is that Unix command line is even harder to properly use then he states. But in my opinion, the initial hurdles in learning it eventually pay off over time.