function is_valid_url() { local url=$1 if curl --output /dev/null --silent --head --fail "$url"; then return 0 else return 1 fi } ...
`git clone https://github.com/marcoperinidev/txt_to_pdf_bash_script.git` `cd txt_to_pdf_bash_script` `chmod +x ./txt_to_pdf_bash_script.sh` `./txt_to_pdf_bash_script ...