Need Code on Masking the letter in a word from the input file using Unix Shell Script ( Charges are applicable )

Masking the letter in a word from the input file. Consider an input file consisting of bunch of words in a new line with word length ranging… Source: Codementor

Masking the letter in a word from the input file. Consider an input file consisting of bunch of words in a new line with word length ranging…
Source: Codementor