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#!/bin/sh
# author: Ehsan Ghorbannezhad <ehsangn@protonmail.ch>
# brief: remove/trash old files/directories from /tmp.
#
# this script removes/trashes top-level files in /tmp that are
# older than the specified amount of time.
# it also removes top-level directories in /tmp that
# are older than the specified amount of time, and don't
# contain any files newer than that time.
#
# the -l option instructs tmpcleaner to
# log the summary to a log file.
# config path
conf=/etc/tmpcleaner/config
# add typical bin dirs to PATH
export PATH="${PATH}:/usr/bin:/usr/local/bin"
# run with root priviliges
if [ "$1" != -s ]; then
sudo "$0" -s "$@"
exit
else
shift
fi
main()
{
handle_conf
. "$conf"
while true; do
case "$1" in
-l) log=true; shift ;;
-h | --help) print_help; exit ;;
"") break ;;
*) die unrecognized argument: "$1" ;;
esac
done
printf '%s\n' "$dir_list" | awk NF | while IFS= read -r dir; do
cleanup "$dir"
done
}
cleanup()
{
tmp_dir="$1"
trash_dir="$1/$trash_dir_name"
[ -e "$tmp_dir" ] || {
warn "directory $tmp_dir doesn't exist."
return 1
}
mkdir -p "$trash_dir" || {
warn "couldn't make directory $trash_dir"
return 1
}
must_trash="$(getold "$tmp_dir" "$trash_older_than" "$trash_dir")"
must_purge="$(getold "$trash_dir" "$purge_older_than")"
printf '%s\n' "$must_trash" | trash
printf '%s\n' "$must_purge" | purge
summary "$tmp_dir" "$trash_dir" "$must_trash" "$must_purge"
}
getold()
{
find "$1" -mindepth 1 -maxdepth 1 -type f -mtime +"$2"
find "$1" -mindepth 1 -maxdepth 1 -type d -mtime +"$2" ${3:+-not -path "*${3}*"} |
while IFS= read -r dir; do
test "$(find "$dir" -type f -mtime -"$2" -quit)" || printf '%s\n' "$dir"
done
}
trash()
{
while IFS= read -r file; do
[ -e "$file" ] || continue
touch "$file"
mv -fv "$file" "$trash_dir"
done
}
purge()
{
while IFS= read -r file; do
[ -e "$file" ] && rm -rfv "$file"
done
}
warn()
{
msg "warning: $*"
}
msg()
{
msg="tmpcleaner: $*"
printf '%s\n' "$msg" >&2
[ "$log" != true ] && return 0
printf '%s %s\n' "$(date '+%F %T')" "$msg" >> "$log_file"
}
summary()
{
msg1="tmpcleaner: \"$1\": moved $(line_count "$3") files to trash ($2)."
msg2="tmpcleaner: \"$1\": purged $(line_count "$4") files from trash."
printf '%s\n%s\n' "$msg1" "$msg2" >&2
[ "$log" != true ] && return 0
printf '%s %s %s\n' "$(date '+%F %T')" "$msg1" "$msg2" >> "$log_file"
}
handle_conf()
{
if [ ! -r "$conf" ]; then
mkdir -p "$(dirname "$conf")" || die could not make parent directory of "$conf"
print_default_conf > "$conf" || die could not write to "$conf"
fi
}
print_help()
{
echo "remove old files and directories from /tmp and other places."
echo "configuration is in /etc/tmpcleaner/conifg."
}
print_default_conf()
{
cat << 'eof'
# clean files older than how many days:
trash_older_than=30
purge_older_than=7
# list of dirs to operate on (one per line)
dir_list='
/tmp
'
# other settings
trash_dir_name=OLD_FILES
log_file=/var/log/tmpcleaner.log
eof
}
die()
{
echo 'tmpcleaner error:' "$@" >&2
exit 1
}
line_count()
{
[ -z "$1" ] && echo 0 && return
echo "$1" | wc -l
}
main "$@"
exit
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