Examples:
sh
pdf_cli -f ./demo.pdf delete --pages [1,2] => delete 1,2 pages
pdf_cli -f ./demo.pdf merge --path ./demo_1.pdf => merge the two pdfs create merged.pdf
pdf_cli -f ./demo.pdf split --num 2 => split pdf at page 2 and and create 1..=2 pages to splited.pdf ,3.. pages to demo.pdf
sh
cargo install pdf_cli