find /oracle/sydf/arch -mtime +2 -name 'sydf*' -type f -exec rm -f {} \;

this means after 48 hours remove the files.....

i am not sure about the command

type f -exec rm -f {} \;

does it means, check for files, then execute it ..

then what doesw the {} and \ and ; means ?

rm -f means force the removal of the file/directory (in this instance the file).

The `find` command can return a number of matches, so in order to action the -exec statement on each of those matches you have to supply the `{}` syntax which tells find to execute what follows the -exec statement on each of those matches, the `\;` is simply terminating the command on each of those matches, the `\` character escapes the character `;` from the shell.