Bash function to compress pdf

compress_pdf.bash

function compress_pdf()
{
    input_file=$1
    output_file=$1_compressed.pdf
    level=/$2
    #levels: screen > ebook > printer > prepress, 
    gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=$level -sOutputFile=$output_file $input_file
    echo "Saved in the same folder with name $output_file"
}