====== Advanced bash scripting ======
http://www.tldp.org/LDP/abs/html/index.html

====== Bash Commands ======

===== Finding a size of a file =====
<code bash>
file_size=$(stat -c%s "$FILENAME")
</code>

===== Wait for user to strike a key =====
<code bash>
read -p "Press [Enter] key to start backup..."
</code>

===== Filename from Filepath =====
Extracting File Name with extension and without extension given full file path
<code bash>
filewithpath=/home/name/path/subpath/etc/abc.txt
filename=$(basename $filewithpath)
filenoext=${filename%%.*}
</code>

filename will have abc.txt

filenoext will have abc