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TMPWATCH(8) System Administrator's Manual TMPWATCH(8)
NAME
tmpwatch - removes files which haven't been accessed for a period of time
SYNOPSIS
tmpwatch [-u|-m|-c] [-MUXadfqstvx] [--verbose] [--force] [--all]
[--nodirs] [--nosymlinks] [--test] [--fuser] [--quiet]
[--atime|--mtime|--ctime] [--dirmtime] [--exclude path]
[--exclude-user user] [--exclude-pattern pattern]
time dirs
DESCRIPTION
tmpwatch recursively removes files which haven't been accessed for a given time. Nor-
mally, it's used to clean up directories which are used for temporary holding space such
as /tmp.
When changing directories, tmpwatch is very sensitive to possible race conditions and will
exit with an error if one is detected. It does not follow symbolic links in the directo-
ries it's cleaning (even if a symbolic link is given as its argument), does not switch
filesystems (including non-trivial bind mounts), skips lost+found directories owned by the
root user, and only removes empty directories, regular files, symbolic links, and on some
systems also unused sockets.
By default, tmpwatch dates files by their atime (access time), not their mtime (modifica-
tion time). If files aren't being removed when ls -l implies they should be, use ls -u to
examine their atime to see if that explains the problem.
If the --atime, --ctime or --mtime options are used in combination, the decision about
deleting a file will be based on the maximum of these times. The --dirmtime option
implies ignoring atime of directories, even if the --atime option is used.
The time parameter defines the threshold for removing files. If the file has not been
accessed for time, the file is removed. The time argument is a number with an optional
single-character suffix specifying the units: m for minutes, h for hours, d for days. If
no suffix is specified, time is in hours.
Following this, one or more directories may be given for tmpwatch to clean up.
OPTIONS
-u, --atime
Make the decision about deleting a file based on the file's atime (access time).
This is the default.
Note that the periodic updatedb file system scans keep the atime of directories
recent.
-m, --mtime
Make the decision about deleting a file based on the file's mtime (modification
time) instead of the atime.
-c, --ctime
Make the decision about deleting a file based on the file's ctime (inode change
time) instead of the atime; for directories, make the decision based on the mtime.
-M, --dirmtime
Make the decision about deleting a directory based on the directory's mtime (modi-
fication time) instead of the atime; completely ignore atime for directories.
-a, --all
Remove all file types, not just regular files, symbolic links and directories. On
systems where tmpwatch can remove unused sockets, make the decision only based on
file times, ignoring possible use of the socket.
-d, --nodirs
Do not attempt to remove directories, even if they are empty.
-f, --force
Remove root-owned files even if root doesn't have write access (akin to rm -f).
-l, --nosymlinks
Do not attempt to remove symbolic links.
-q, --quiet
Report only fatal errors.
-s, --fuser
Attempt to use the "fuser" command to see if a file is already open before removing
it. Not enabled by default. Does help in some circumstances, but not all.
Dependent on fuser being installed in /sbin. Not supported on HP-UX or Solaris.
-t, --test
Don't remove files, but go through the motions of removing them. This implies -v.
-U, --exclude-user=user
Don't remove files owned by user, which can be an user name or numeric user ID.
-v, --verbose
Print a verbose display. Two levels of verboseness are available -- use this option
twice to get the most verbose output.
-x, --exclude=path
Skip path; if path is a directory, all files contained in it are skipped too. If
path does not exist, it must be an absolute path that contains no symbolic links.
-X, --exclude-pattern=pattern
Skip paths matching pattern; if a directory matches pattern, all files contained in
it are skipped too. pattern must match an absolute path that contains no symbolic
links.
SEE ALSO
cron(1), ls(1), rm(1), fuser(1)
AUTHORS
Erik Troan <ewt AT redhat.com>
Preston Brown <pbrown AT redhat.com>
Nalin Dahyabhai <nalin AT redhat.com>
Miloslav Trmac <mitr AT redhat.com>
4th Berkeley Distribution 2009-10-15 TMPWATCH(8)
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