SMS sending script via EDIS SMS API

#!/bin/bash
#sms sending script by william (c) 2012
#grab text, dest number and sending application
    NUMBER=$1
    SENDER=$2
    TEXT=$@
    #fix text already, workaround for spaces in message
    TEXT=$(echo $TEXT | awk '{for (i = 3; i <= NF; i++) printf("%s ", $i); }')
#password and user for the gateway
    PASSWD=XXXXX
    LOGIN=XXXXX

#### dest number input validation and fixes ####
#various number fixes
    #change + in number to 00 if it exists
        NUMBER=$(echo $NUMBER | sed -e "s/+/00/")
    #number is fully numeric now, check this
    if echo $NUMBER | grep "^[0-9]*$" >/dev/null
        then
            echo "number numeric - ok" >> /dev/null
        else
            echo "number not numeric - please fix"
            exit 1
    fi
    #change 00 in number to needed format for GET request (replace 00 with %2B (+))
    NUMBER=$(echo $NUMBER | sed -e "s/00/%2B/")
#### /dest number input validation ####

#### sendername validation and fixes ####
    #check if string is number or text
        if echo $SENDER | grep "^[0-9]*$" >/dev/null
                then
                        #string is text, allow 11 characters
            SENDER=$(echo $SENDER | cut -c1-11)
                else
                        #string is number, allow 16 numbers
            SENDER=$(echo $SENDER | cut -c1-16)
        fi
        #replace empty strings with 0s
    SENDER=$(echo $SENDER | sed -e "s/ /0/")
#### /sendername validation and fixes ####

#### text validation and fixes ####
    #cut the text down to 150 chars max
    TEXT=$(echo $TEXT | cut -c1-150)
    #replace space with +
    TEXT=$(echo $TEXT | sed -e "s/ /+/g")
#### /text validation and fixes ####
#checks completed, curl the gateway and send the SMS

curl -s "http://www.http2sms.com/sms/?id=$LOGIN&pw=$PASSWD&dnr=$NUMBER&snr=$SENDER&msg=$TEXT"