Redirection based on variables assigned within while loop setup - shell

Question

I want to access while loop variable out side the loop
while read line
do
...
...
...
done < $file > /home/Logs/Sample_$line_$(date +"%Y%m%d_%H%M%S").log
In the above example whatever the log file is getting generated that doesn't have the value for the line variable. i.e. $line is not working here.
Please let me know how this can be written to make it work.
#!/bin/sh
exec 1> /home/Logs/`basename $0 | cut -d"." -f1 | sed 's/\.sh//g'`_$(date +"%Y%m%d_%H%M%S").log 2>&1
echo "Execution Started : `date` \n"
SQL_DIR=/home/Sql
INFILE=in_file
TEMPFILE=temp_file
RETURN_CODE=0
ls -ltr $SQL_DIR|grep ".sql"|awk -F" " '{print $9}'|awk -F"." '{print $1}' > $INFILE
sed '/^$/d' $INFILE > $TEMPFILE; mv $TEMPFILE $INFILE
while read line
do
{
START_TIME=`date +%s`
printf "\n SQL File Executed Is : $line.sql"
SQL_FILE_NM=$line.sql
SQL_FILE=$SQL_DIR/$SQL_FILE_NM
nzsql -db netezza_db -Atqf $SQL_FILE > /dev/null
RETURN_CODE=$?
if [ $RETURN_CODE -eq 0 ]; then
echo "Time taken to execute sqlfile $SQL_FILE=$TT_HRS:$TT_MINS:$TT_REM_SECS HH:MM:SS" > $TEMPFILE
printf "\n Success: Sql completed successfully at `date` \n"
cat $TEMPFILE|mailx -s "Time taken to execute sqlfile $SQL_FILE=$TT_HRS:$TT_MINS:$TT_REM_SECS HH:MM:SS" 'koushik.chandra#a.com'
else
printf "\n Error: Failed in sql execution at `date`"
exit $RETURN_CODE
fi
END_TIME=`date +%s`
TT_SECS=$(( END_TIME - START_TIME))
TT_HRS=$(( TT_SECS / 3600 ))
TT_REM_MS=$(( TT_SECS % 3600 ))
TT_MINS=$(( TT_REM_MS / 60 ))
TT_REM_SECS=$(( TT_REM_MS % 60 ))
printf "\n"
printf "Total time taken to execute the sql $line="$TT_HRS:$TT_MINS:$TT_REM_SECS HH:MM:SS
printf "\n"
} > /home/Logs/sql_query_time_$line_$(date +"%Y%m%d_%H%M%S").log
done < $INFILE
rm -f $INFILE $TEMPFILE
exit $RETURN_CODE

Answer 1

You actually need redirection inside the while loop:
while read -r line; do
{ cmd1; cmd2; cmd3; } > "/home/Logs/Sample_${line}_$(date +"%Y%m%d_%H%M%S").log"
done < "$file"
When you have > outfile after done then output is redirected to one file only.