05-31-2007
/var/spool is a link of /usr/spool, email and print files are all temporarily stored below this directory.
/var/opt is the location of the operating system files, /usr/bin /bin /etc are all links to something within /var/opt.
You should, by definition, be able to delete all the files in /tmp, and, in fact, in SCO 6.0.0 and Unixware, /tmp can be a ramdrive...but, I would make a copy of it, say "tar ctvf /u/tmp.tar /tmp" before deleting it the first time.
There are hard links, and soft(symbolic) links. There is no way to tell which is the original and which is the link with a hard link, so deleting one will delete both.
With soft links, the original file will still exist if the link (newer file) is deleted. See "man ln".
It doesn't matter which file name you use to truncate the file.
/usr/spool/mail/cron will only exist if you have cron jobs (typically scheduled overnight batch jobs) running.
If you are using mail on this system, you should move all the contents of /usr/spool/mail to /u/spool/mail, and then edit /usr/mmdf/mmdftailor and change the location of the spool files accordingly. Doing this will prevent someone from filling the root file system with email messages.
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LEARN ABOUT ULTRIX
uucompact
uuaids(8c) uuaids(8c)
Name
uucompact, uumkspool, uurespool, uupoll - uucp utilities
Syntax
uucompact -ssystem
uumkspool system ...
uurespool [ -t# ]
uupoll system ...
Description
All of the commands are located in
The command compacts uucp system spool directories and associated subdirectories. If system is ALL, then all existing uucp system spool
directories are compacted. Otherwise, only the specified system spool directory is compacted. If no system is specified, is compacted.
If is stopped before it is finished, it can be restarted without reprocessing directories. The command continues processing where it left
off during it's previous instantiation.
The command makes a per system spool directory and associated subdirectories for each of the specified systems. For example, if system is
mk3 and if the local system name is penny, the following directories are created:
/usr/spool/uucp/sys/mk3
/usr/spool/uucp/sys/mk3/C.
/usr/spool/uucp/sys/mk3/X.
/usr/spool/uucp/sys/mk3/D.
/usr/spool/uucp/sys/mk3/D.penny
/usr/spool/uucp/sys/mk3/D.penny
The command moves files from old spool directories to new spool directories. Because the structure of the spool directories has changed
from older versions of it is necessary to respool old spooled files to new spool directories in at least two instances:
o When installing the current version of
o When creating a new system spool directory for each system.
In the latter case, it is necessary to move files from to the new spool directories. To ease this task, moves files that have been spooled
in one of 4 formats and respools them under the new spooling structure. The format is specified by the -t# option, where the number sign
(#) can be any one of the following:
o Original spool - All files are in
o Split spool - Contains the subdirectories
o Modified split spool - Contains all subdirectories listed in split spool, and
o Used when a new system directory has been created and spool files must be moved from the DEFAULT directory to the new system directory.
The command forces a connect attempt to the named systems even if recent attempts have failed, but not if the file prohibits the call. For
example, the file will prohibit the call if it is the wrong time of day. Thus, the should be monitored for messages about the connection.
Files
Spool directory
Logfile
See Also
mail(1), uucp(1c), uux(1c)
uuaids(8c)