101.127.95.163

┌─[✗]─[23:38:00]─[kazwolfe@BlackHawk]
└──> ~ $ ls .bash*
.bash_history  .bash_logout  .bashrc

bash-4.3$ df
Filesystem     1K-blocks    Used Available Use% Mounted on
udev             2901868       0   2901868   0% /dev
tmpfs             585184    8672    576512   2% /run
/dev/sda1      153704484 9312484 136561168   7% /
tmpfs            2925916  152468   2773448   6% /dev/shm
tmpfs               5120       4      5116   1% /run/lock
tmpfs            2925916       0   2925916   0% /sys/fs/cgroup
tmpfs             585184      52    585132   1% /run/user/1000
bash-4.3$

python -c 'print u"\u2299 ____ \u2299"'
⊙ ____ ⊙

If the -e option
              is given,  interpretation  of  the  following  backslash-escaped
              characters  is  enabled.

bash-4.3$ echo -e "hello\nworld"
hello
world

$ echo -e 'i am \nsinoosh?'
i am
sinoosh?
$ echo -e "i am \nsinoosh?"
i am
sinoosh?

bash-4.3$ echo 'one\ntwo'
one\ntwo
bash-4.3$

type echo

bash-4.3$ type echo
echo is a shell builtin

$ set -x
$ echo -e i am \nsinoosh?
+ echo -e i am 'nsinoosh?'
i am nsinoosh?

$ echo -e "i am \nsinoosh?"
+ echo -e 'i am \nsinoosh?'
i am
sinoosh?

$ echo -e 'i am \nsinoosh?'
+ echo -e 'i am \nsinoosh?'
i am
sinoosh?

$ echo 'tab:\t:'
tab:\t:

$ echo -e 'tab:\t:'
tab:	:

$ echo tab:\t:
tab:t:

$ echo \$
$

bash-4.3$ tee HELLO_WORLD.txt
one
one
two
two
three
three
bash-4.3$ cat HELLO_WORLD.txt
one
two
three

bash-4.3$ cat > HELLO_WORLD.txt
one
two three
four
bash-4.3$ cat HELLO_WORLD.txt
one
two three
four