error in shell script while returning values-- urgent issue plz help.

Shell Programming and Scripting
1

Hi,

I have initailized a varaible EBID as typeset Long EBID=0

i am calculating value of EBID using certian formula as below:
(( CURR_EBID= ($BANDINDEX << 27) | ($CURR_FREQ << 16) | ($CURR_CELLID << 4) | $CURR_SECTOR_VALUE ))
return $CURR_EBID

The output is as below:
+ (( CURR_EBID= (15 << 27) | (125 << 16) | (135 << 4) | 1 ))
+ return 2021460081
+ TEMP_EBID=113
-----------------------------

the value after calculation is correct. But the value stored after returing is wrong.
The above script returns 2021460081 but the value stored is 113.

I m not understanding the error.

can anyone plz let me know error?

its urgent

--sailaja

2

How are you assigning the return value? One way is...

function foo
{
  a=10
  return $a
}

#Function call
foo
ret=$?

echo $ret

--ahamed

3

i am assigning as below:
CalculateEBID $FREQUENCY $BAND 1 $CELLID
TEMP_EBID=$?
T_EBID=$TEMP_EBID

4

That looks fine.

Can you paste few more lines of the code around the function and function call. Also, please post the trace.

Meantime, you can try this way also...

#!/bin/bash

function foo
{
        a=10
        echo $a
}

val=$( foo )
echo $val

--ahamed

5

This is the fulls cript:
#!/bin/sh

#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
#
# In the BTSTemplate -
#
# Replace all instances of the BTS name/ CELL name with "@BTSNAME"
# Replace Traffic Range value with "@TRAFFICRANGE" (METROINV/COMPACTINV)
# Replace Port Number value with "@PORTNUMBER" (METROINV/COMPACTINV)
# Replace CEll ID with "@CELLID" (MSECTOR)
# Replace IP Adress with "@IPADDRESS" (BTSIWFPORT)
# Replace INSASPI with "@SASPI" (BTSIWFPORT & ETHERNETINV)
# Replace EGSASPI with "@SASPI" (BTSIWFPORT & ETHERNETINV)
#
# The BTSTemplate should not contain section adding a new LogicalIPPort
#
#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
### CONSTANTS ###
HOME="/export/home/bsmbin/" # home directory of the user who is running this script.
BTS_TEMPLATE="new.txt" #input cli template with the token substitution.
FINAL_BATCHFILE="default_finalbatchfile1.cli" # output bsmci batch file location
BTS_COUNT=1 # number BTSs to be created
CELLID=135 #starting cell id number
PORTNUM=40 # starting portnumber
TRAFFICRANGE=11 # starting Traffic range...
typeset String BAND=AWS #
typeset Integer FREQUENCY=125 # starting the fourth element in an IP Address
SECTOR_VALUE=1
TotalSECTOR_COUNT=3
typeset Long EBID=0
typeset Long NeighbourOne=0
typeset Long NeighbourTwo=0
typeset Long ACNID=0
PILOT=24
TRAFFICRANGE_GROUP=4

### FUNCTIONS ###

#####################################################
#Function to change the value of
#BTS Template
#####################################################
CalculateACNId()
{
CURR_TR=$3
CURR_PORT=$1
CURR_TRM=262144
CURR_PM=2048
CURR_OFFSET=49
CURR_TRG=$2
(( CURR_ACNID= ($CURR_TRG << 24) + ($CURR_TR * $CURR_TRM) + ($CURR_PORT * $CURR_PM) + $CURR_OFFSET ))
return $CURR_ACNID
}

#####################################################
#Function to change the value of
#BTS Type
#####################################################
CalculateEBID ()
{
typeset Integer CURR_CELLID=$4
typeset Integer CURR_SECTOR_VALUE=$3
typeset String CURR_BAND=$2
typeset Integer CURR_FREQ=$1
case $CURR_BAND
in
800)BANDINDEX=0 ; ;;
1900)BANDINDEX=1 ; ;;
450)BANDINDEX=5 ; ;;
AWS)BANDINDEX=15 ; ;;
SEC_800)BANDINDEX=10 ; ;;
esac
(( CURR_EBID= ($BANDINDEX << 27) | ($CURR_FREQ << 16) | ($CURR_CELLID << 4) | $CURR_SECTOR_VALUE ))
return $CURR_EBID
}

####################################################
#
# MAIN PROGRAM
#
####################################################

### GENERATE Batch File ###
### INITIALIZE VARIABLES###
count=0
btscount=0
COUNT=$TotalSECTOR_COUNT
### LOOP ###

/usr/bin/chmod 775 $FINAL_BATCHFILE
echo "#New PDB scripts" >> $FINAL_BATCHFILE
echo "edit O%:CBS1:SystemConfiguration1:SystemPilotDatabase1" >> $FINAL_BATCHFILE
echo " (PDBTable = " >> $FINAL_BATCHFILE
echo "($TotalSECTOR_COUNT, " >> $FINAL_BATCHFILE
while [ $btscount -lt $BTS_COUNT ]
do

CUUR_SEC_COUNT=1
CalculateEBID $FREQUENCY $BAND 1 $CELLID
TEMP_EBID=$?
Alpha_EBID=$TEMP_EBID
CalculateEBID $FREQUENCY $BAND 2 $CELLID
TEMP_EBID=$?
Beta_EBID=$TEMP_EBID
CalculateEBID $FREQUENCY $BAND 3 $CELLID
TEMP_EBID=$?
Gamma_EBID=$TEMP_EBID
CalculateACNId $PORTNUM $TRAFFICRANGE_GROUP $TRAFFICRANGE
ACNID=$?
while [ $CUUR_SEC_COUNT -lt 4 ]
do
case $CUUR_SEC_COUNT
in
1) EBID=$Alpha_EBID; N_one=$Beta_EBID; N_two=$Gamma_EBID;
/usr/bin/cat $HOME$BTS_TEMPLATE | /usr/bin/sed 's/@COUNT/'$COUNT' /' | /usr/bin/sed 's/@VALUE/'$count' /' |
/usr/bin/sed 's/@EBID/'$EBID' /' | /usr/bin/sed 's/@ACNID/'$ACNID' /' |
/usr/bin/sed 's/@PILOT/'$PILOT' /' | /usr/bin/sed 's/@NeighbourOne/'$N_one' /' |
/usr/bin/sed 's/@NeighbourTwo/'$N_two' /' >> $FINAL_BATCHFILE ;
count=`expr $count + 1` ;
;;
2) EBID=$Beta_EBID; N_one=$Alpha_EBID; N_two=$Gamma_EBID; PILOT=`expr $PILOT + 4`;
/usr/bin/cat $HOME$BTS_TEMPLATE | /usr/bin/sed 's/@COUNT/'$COUNT' /' | /usr/bin/sed 's/@VALUE/'$count' /' |
/usr/bin/sed 's/@EBID/'$EBID' /' | /usr/bin/sed 's/@ACNID/'$ACNID' /' |
/usr/bin/sed 's/@PILOT/'$PILOT' /' | /usr/bin/sed 's/@NeighbourOne/'$N_one' /' |
/usr/bin/sed 's/@NeighbourTwo/'$N_two' /' >> $FINAL_BATCHFILE ;
count=`expr $count + 1` ;
;;
3) EBID=$Gamma_EBID; N_one=$Beta_EBID; N_two=$Alpha_EBID; PILOT=`expr $PILOT + 4`;
/usr/bin/cat $HOME$BTS_TEMPLATE | /usr/bin/sed 's/@COUNT/'$COUNT' /' | /usr/bin/sed 's/@VALUE/'$count' /' |
/usr/bin/sed 's/@EBID/'$EBID' /' | /usr/bin/sed 's/@ACNID/'$ACNID' /' |
/usr/bin/sed 's/@PILOT/'$PILOT' /' | /usr/bin/sed 's/@NeighbourOne/'$N_one' /' |
/usr/bin/sed 's/@NeighbourTwo/'$N_two' /' >> $FINAL_BATCHFILE ;
count=`expr $count + 1` ;
;;

esac
CUUR_SEC_COUNT=`expr $CUUR_SEC_COUNT + 1`
done
### INCREMENT VARIABLES ###
btscount=`expr $btscount + 1`

done
echo " ));" >> $FINAL_BATCHFILE
echo "exit ;" >> $FINAL_BATCHFILE
exit

6

This seems to work... Try this...

CalculateEBID ()
{
        typeset Integer CURR_CELLID=$4
        typeset Integer CURR_SECTOR_VALUE=$3
        typeset String CURR_BAND=$2
        typeset Integer CURR_FREQ=$1
        case $CURR_BAND
        in      
          800)BANDINDEX=0 ; ;;
          1900)BANDINDEX=1 ; ;;
          450)BANDINDEX=5 ; ;;
          AWS)BANDINDEX=15 ; ;;
          SEC_800)BANDINDEX=10 ; ;;
        esac
        (( CURR_EBID= ($BANDINDEX << 27) | ($CURR_FREQ << 16) | ($CURR_CELLID << 4) | $CURR_SECTOR_VALUE ))
        echo $CURR_EBID
}
...

TEMP_EBID=`CalculateEBID $FREQUENCY $BAND 1 $CELLID`

Not sure why the other didn't work, may be something to do with the shell? I am also getting the same 113.

--ahamed

---------- Post updated at 12:50 AM ---------- Previous update was at 12:42 AM ----------

I think the return value range is 0 - 255.
You can try it youself. Upto 255, it is returning correctly, post 255 it starts from 0 again.

So, either

  1. Use a global variable and capture the value
  2. Use the solution in post i.e. alternate way to capture return val

HTH
--ahamed

1 Like
7

thanks a lot ahmed for the help.
i used global variable now the scripts is fine