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08-01-2008
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test if
Hi, I have this script : Code:
Nbr_BD_Link=`
sqlplus -S sysadm/${PSWD}@${DB_Name} << EOF
set head off feedback off ;
select count(*) from dba_db_links ;
exit ;
EOF `
echo "Nbr_BD_Link is : "
echo ${Nbr_BD_Link}
echo "we do a test"
if [ "${Nbr_BD_Link}" != "0" ] ; then
echo "${T80}\nLa base ${DB_Name} contient ${Nbr_BD_Link} DB Link :"
fi
The result of execution is Code:
Nbr_BD_Link is :
0
we do a test
--------------------------------------------------------------------------------
La base MYDB contient
0 DB Link :
As you can see, the conditional echo "${T80}\nLa base ${DB_Name} contient ${Nbr_BD_Link} DB Link :" is executed even if Nbr_Bd_Link is zero. Now I force Nbr_BD_Link to be zero : Code:
Nbr_BD_Link=0
Nbr_BD_Link=`
sqlplus -S sysadm/${PSWD}@${DB_Name} << EOF
set head off feedback off ;
select count(*) from dba_db_links ;
exit ;
EOF `
echo "Nbr_BD_Link is : "
echo ${Nbr_BD_Link}
echo "we do a test"
Nbr_BD_Link=0
if [ "${Nbr_BD_Link}" != "0" ] ; then
echo "${T80}\nLa base ${DB_Name} contient ${Nbr_BD_Link} DB Link :"
fi
The result would be Code:
Nbr_BD_Link is : 0 we do a test The condition is respected and the conditional echo "${T80}\nLa base ${DB_Name} contient ${Nbr_BD_Link} DB Link :" is not executed. Why ? Any idea ? Any help ? thank you. May be some caracter at the end of Nbr_BD_Link ? How to keep just zero ? |
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