Answer:
physical piece of hardware that connects to a primary device, such as a computer, in order to provide user input.
Explanation:
Answer:
Pseudo-element
Explanation:
pseudo-element is a keyword added to a selector that lets you style a specific part of the selected element. They allow you style a specific part of an element's content. They are not elements that exist in the document hierarchy but they allow you create element which are not on the DOM.
Answer:
#!/bin/bash
if [ -z "$1" ] || [ -z "$2" ]
then
echo "invalid arguments"
exit 1
fi
filename="$1"
extension="$2"
cnt=1
for file in *. $extension
do
echo "renaming $file to $filename $cnt.$extension"
mv -i "$file" "$filename$cnt. $extension" #prompt before overwriting a file
cnt=$(( $cnt + 1 ))
done
Explanation: