いつかどこかで役に立つechoについて ref: http://qiita.com/kentarosasaki/items/a4843c420f419807ea83

file0.txt

echo [SHORT-OPTION]... [STRING]...

file1.txt

$ echo You are the Laughing Man, aren’t you?
You are the Laughing Man, aren’t you?

file10.txt

$ echo -n "I am going to tell you the truth behind the Laughing Man case."
I am going to tell you the truth behind the Laughing Man case.$

file11.txt

$ echo *
of.txt psychoanalyst.txt Stekel.md the.txt Wilhelm.md Words.txt

file12.txt

$ echo *.md
Stekel.md Wilhelm.md

file13.txt

$ echo "I will leave my memories behind. I am counting on you." > CAPTIVATED
$ cat CAPTIVATED
I will leave my memories behind. I am counting on you.

file2.txt

$ i=3
$ echo This is the "$i"rd time that we’ve met, yet you know who I am? Although they just call me that.
This is the 3rd time that we’ve met, yet you know who I am? Although they just call me that.

file3.txt

$ echo -e "It’s quite audacious of you to come here. Why did you come \ahere?"
It’s quite audacious of you to come here. Why did you come here?

file4.txt

$ echo -e "I \bcame \bhere \bto \bbe \bsaved \bby \byou."
Icameheretobesavedbyyou.

file5.txt

$ echo -e "Don’t \nyou \nmean \nthe \nother \nway \naround?"
Don’t
you
mean
the
other
way
around?

file6.txt

$ echo -e "True. But I’m so beat up right now that \rthis is the only method I can think of."
this is the only method I can think of.

file7.txt

$ echo -e "How \tselfish \tof \tyou."
How     selfish         of      you.

file8.txt

$ echo -e "I \vcan’t \vafford \vto \vlose \vany \vmore \vtime."
I
  can’t
        afford
               to
                  lose
                       any
                           more
                                time.

file9.txt

$ echo -e "Well then, \cwhat would the Net’s hero want me to do?"
Well then, $