Following is the script to gather stats for test.foo table. You can create a file at OS level and paste the following script:

touch gatherstats.sh
chmod a+x gatherstats.sh

then paste:

#!/bin/sh
sqlplus <<-EOF
/ as sysdba
set echo on timing on
exec dbms_stats.gather_table_stats(ownname=>'test',tabname=>'foo', ESTIMATE_PERCENT=>.01, METHOD_OPT=> 'FOR ALL INDEXED COLUMNS',CASCADE=>TRUE,DEGREE=>6);
exit
EOF
echo -e "Stat completed for table FOO." | mail -s "Stat completed"


Now you can run the script in background:

nohup ./gatherstats.sh &

The script will email you upon completion.