Hello everyone, and welcome to Filters / Text
Processor commands. This is the lecture where I'm
going to show you what are the commands, the text
processing commands that we will cover in this
lecture, and of course, the following lectures.
These text processor commands are very powerful.
That gives a huge advantage to Linux or many other
operating systems. These commands are, cut, that
allows you to cut the output. It takes the
input of a command, or if you're reading a content
of a file, it takes that in as an input, and then
it cuts to your desired output. Then,
goes to awk. awk actually allows you to list by
the columns. Then we have grep and egrep
commands, grep and egrep commands are just like as
if you want to search by the keywords. If you are
searching for a specific word, let's say warning,
in our file, you could just grep for warning,
and into that file, and it will list only the
lines that contains that word warning. Then the
sort command. As you see the name, the sort
command sorts out the output in alphabetical
order. Then we will learn the unique command. The
unique command will not show any duplicates. If
there are words in our file that are
same as the one previous to it, then the unique
command will eliminate all duplicates. And then
last command we will learn is the word count
command, also referred to as Walker command. So
some people refer it as vaca, some people
refer to it as wc count. Anyway, this is the
one that will tells you how many words, how many
letters and how many lines do you have in a file
or in an output. So anyway, we are going to cover
every one of these commands, and I have separated
each lecture based on these commands. So you would
have a very good understanding of how each command
works. So are you ready to go and practice
these commands with me in the next lectures. Let's
go, let's go do it.
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