Asteriskのファクシミリを容易に送れるTUI?なスクリプト

faxout.sh

#!/bin/sh
file=faxout.tif
if [ -e $file ]; then
    echo "$file Found, Do Send fax."
    echo -n "Please input send fax number: "
    read faxnum
    if expr "$faxnum" : '[0-9]*' > /dev/null ; then
       echo 'OK' > /dev/null
    else
        echo "This is not number. Please try agein."
        exit 1
    fi
    while true; do
        echo -n "Send number is ${faxnum} is this correct? [y/N]: "
        read confirm
        case $confirm in
            y) echo "OK,It will Start within 3seconds."
               echo "Note: You need Administrator Password"
               sudo asterisk -rx "originate SIP/${faxnum}@brastel extension send@fax-tx" 
               if [ "$?" -eq 0 ]; then
                   echo 'Send Fax Was Successed.'
                   echo 'Now Removing faxout.tif'
                   rm -r faxout.tif
                   exit 0
               else
                   echo 'Send Fax Was Failed.'
                   echo 'Please check it'
                   exit 1
               fi
               break
               ;;
            *) echo "Aborting."
               exit 1
               break
               ;;
        esac
    done
else
    echo "$file not found."
    echo "If you have tif file, please rename faxout.tif"
    exit 1
fi