Shell Programming and Scripting

if [ -d $DUMP && -d $LOG &&  "$PARALLEL_EXPORT" = "n" ]; then

exp $UID/$PWD@$ORACLE_SID FILE=./DUMP/$TODAY$CONCAT_STR$USERNAME.dmp STATISTICS=NONE LOG=./LOG/$TODAY$CONCAT_STR$USERNAME.log

elif [ -d $DUMP && -d $LOG &&  "$PARALLEL_EXPORT" = "y" ]; then

expdp $UID/$PWD@$ORACLE_SID DIRECTORY=./DUMP/ DUMPFILE=$TODAY$CONCAT_STR$USERNAME.dmp LOGFILE=./LOG/$TODAY$CONCAT_STR$USERNA
ME.log

else
        mkdir DUMP LOG
fi

 
bash-3.2$ [ -d one.txt && -d two.txt ] && echo "Hi" || echo "TEST"      
bash: [: missing `]'
TEST
bash-3.2$ [[ -d one.txt && -d two.txt ]] && echo "Hi" || echo "TEST"
TEST

 
#!/bin/bash

 
[ -d one.txt -a  -d two.txt -a "$a" = "N" ] && echo "TEST" || echo "HI"

#!/bin/sh
echo "Enter the EXPORT_LEVEL:(sys/system or user)"
read EXPORT_LEVEL
if [[ $EXPORT_LEVEL = "user" ]]; then
     echo "u r in if part"
else
        echo "u r in else part"
fi