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+====== 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