Compare text strings.

Shell Programming and Scripting
1

Hi Im trying to write a script that compare a text string.
But it fails, I think it adds a extra line feed to the result and fails beacuse of that.

The script.

DT=`date +'%Y%m%d%H%M%S'`
#ALARM_BIN=/users/alarms/ssa/alarms/bin
QUEUE_THR=10
#unset offset
#offset="***Server reports data not found"
#offset=330000
offset=`xntpdc -p |awk '{ print $7 }' |tail -1| (sed -e 's/^-//' -e 's/\.//')`
echo "$offset"
if [ "$offset" = "***Server reports data not found" ]; then
        echo "Connection to NTP server lost"
        ${ALARM_BIN}/alarm_raise NTPCHECK ntp_check 8 8505 MAJOR "Connection to NTP server lost" SSOO

        else
        if (( $offset > 300000 )); then
        echo "Client clock off by 0.3 seconds or more"
        ${ALARM_BIN}/alarm_raise NTPCHECK ntp_check 8 8507 MAJOR "Client clock off by 0.3 seconds or more" SSOO

        else
        echo "NTP server connection and client clock OK"
        ${ALARM_BIN}/alarm_raise NTPCHECK ntp_check 14 8606 CLEAR "NTP server connection and client clock OK" SSOO
        fi
fi

The result is as follows
If the ntp server is available it returns a number

ntp_check
0060277
NTP server connection and client clock OK

If the ntp server is unavailable
ntp_check
***Server reports data not found

./ntp_check[16]:   > 300000 : syntax error

It fails doing the comparision I dont understand why.
Why is there a blank line below

***Server reports data not found

Thanks.

2 
 if (( $offset > 300000 )); then

Should be

if [ $offset -gt 300000 ]; then
3

Thanks JGT.
I supoose that your way might be more correct. But that part of the code is actually working.
Beacuse if I put in numbers higher or lower than 300000 i get the results that I want.

My focus is on solving the comparision of the character string that is failing
and as a secondary effect gives the
> 300000 : syntax error

4

When $offset is not numeric, does it end with a carriage return?