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A step-by-step approach to deleting unwanted UNIX files

When writing UNIX scripts to automatically delete obsolete Oracle trace files, audit files, dump files and archived redo logs, it is a good idea to carefully develop the UNIX script through iteration, getting each piece working. Remember, even seasoned UNIX guru’s will not write a complex command until each component is tested.

We start by going to the archived redo log directory and finding all redo log files that are more than 7 days old. In this example, we take a cold backup each night, and the DBA has not use for elderly redo log files.

root> cd $DBA/$ORACLE_SID/arch
root> find . -mtime +7


Now that we have the list of files, we can add the UNIX rm command to this syntax to automatically remove all files that are more than 7 days old. In this case, we can use either the –exec or the xargs commands to remove the files.

find . –mtime +7 –exec rm {} \;

The above is an excerpt from the "Oracle UNIX Administration Handbook" by Oracle press, authored by Donald K. Burleson.


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