z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

skulker
Description
Options
skulker finds files that are candidates for deletion in directory, based on the age
specified by days_old.
When you call skulker without any options, the files that are candidates for deletion
are found using the primaries as in the following find command line:
find directory -type f -atime +days_old -level 0 -print
For example, specifying 5 for days_old causes the find command to find files equal
to or older than 5 24-hour intervals earlier than now.
The skulker script (which is a z/OS shell script, and can be found in /samples)
should be copied and can be modified to suit your particular needs. Possible
locations for placing the script include /bin or /usr/sbin, especially if skulker is to
be run from a UID(0) program. If skulker is to be run by users, /usr/bin is another
possibility, but check that the sticky bit is on in the directory. If the script is called
from a privileged user (a superuser, a user with a UID of 0, or a user running with
the RACF trusted or privileged attribute), it is important to protect the script from
any modifications by a non-privileged user.
–i Displays the files that are candidates for deletion, and prompts the user to
stop or continue with file removal. Do not use this option if you are invoking
skulker from a cron job. If skulker is invoked with –i from a cron job, no
files will be deleted. A message will be mailed to the caller, showing the
skulker output that includes the message “Request canceled.”
–l Specifies a logfile to store a list of files that have been deleted, are
candidates for deletion, or for which warnings have been mailed; and any
errors that may have occurred.
–r Moves recursively through subdirectories, finding both files and
subdirectories that are equal to or older than the specified number of days.
The files that are candidates for deletion are found using the primaries as in
the following find command line:
find directory -atime +days_old ! -name directory -print
The –name primary prevents skulker from deleting the actual directory that
was entered as a start point (for example, /tmp).
–w Does not remove files, but sends a warning to the owner of each old file
(using mailx) that the file is a candidate for deletion.
days_old
Specifies the age of the files you want to remove. For example, if you
specify 100 for days_old, all files that were last accessed 100 or more days
ago are marked as candidates for deletion.
directory
Specifies the directory in which to look for files.
By default, files are removed from the specified directory based on access time and
their status as regular files, and are removed only from the directory specified (not
from any subdirectories).
586 z/OS V1R9.0 UNIX System Services Command Reference