#!/bin/bash
################################################################################
# Script name: free_space_v1.0.sh #
# Author: SoD #
# Contact: SoD- @ EFNet #
# Releasedate: 2001-05-01 #
# #
# This script runs in crontab at an approperiate interval and then deletes #
# directorys until a specified amount of space is free. This script only #
# deletes directly inside the specified incomingpath, thus it cannot be used #
# were you have "nested" dirs (CD1, CD2, sample and such does not qualify as #
# nested). If you have a dated dir structure you should use my other script, #
# free_space_dated_dirs_v1.0.sh. This script is meant for iso/vcd/divx/ and #
# sections were you normally dont have dated dirs. You can specify how much #
# space the section is allowed to contain, letting you have multiple sections #
# on one device. The script deletes the dirs by their modification time and #
# writes to glftpd.log so that a botscript can announce it (see below on how #
# to configure the botscripts). The script does something like this: #
# * Deleting any nuked directorys inside incomingpath if they are older than #
# specified by $DELETE_NUKES_TIME #
# * Deleting oldest directory inside incomingpath #
# * Repeats above in the "next" dated dir until enough space is free #
# #
# Installation: -Put this file in some approperiate place, for example #
# /glftpd/bin/free_space_v1.0.sh #
# -Make it executable (chmod 755 /glftpd/bin/free_space_v1.0.sh) #
# -Edit your crontab (crontab -e) and write something like: #
# 0,20,40 * * * * /glftpd/bin/free_space_v1.0.sh #
# -Edit this script to suit your setup #
# -Test the script -ADViCE: EXECUTE THiS SCRiPT MANUALLY (ROW BY #
# ROW) THE FiRST TiME (use /bin/ls instead of just ls) #
# -If you are using Darkheart's botscript you should add the #
# following 4 lines to sitebot-glftpd.api and then rehash it.: #
# set chans(sectionname-AUTODEL) " #channelname " #
# ^-edit ^-edit #
# set echovars(AUTODEL) "size section deldir" #
# set enabled_announce(AUTODEL) 1 #
# set mask(AUTODEL) "[b]\[%sitein AUTO-DELETE\][b] system freed [b]%size MB[b] in [b]%section[b] by deleting [b]%deldir[b]"
# -If you are using vShit's botscript you should add the #
# following line in the scanlog proc and then rehash it.: #
# AUTODEL: {sndall "[b]\[$sitename AUTO-DELETE\][b] system freed [b][lindex $args 0] MB[b] in [b][lindex $args 1][b] by deleting [b][lindex $args 2][b]"}
# -If you are using vrpack (1.6.0 Beta) botscript you should add #
# the following line in the scanlog proc and then rehash it.: #
# AUTODEL: {sndall "\002\[$sns AUTO-DELETE\]\002 system freed \002[lindex $args 0] MB\002 in \002[lindex $args 1]\002 by deleting \002[lindex $args 2]\002"}
# #
# Requirements: awk, cut, date, df, du, echo, expand, expr, grep, ls, rm, #
# tail, tr #
# #
# Limitations: -Can only handle dirnames without spaces. #
# -Only one section can be handled, use multiple instances of #
# this script, 1 per section if you have multiple sections. #
# #
################################################################################
# How many Megabyte shall be kept free? ( free space when script exits )
MIN_FREE_SPACE=500
# If you only want to use a part of the device for the section this script keeps
# free you can set that amount (in MB) here. If you want to use the entire
# device, set this to 0 (zero). The above setting is nescessary too.
# WARNING! This setting forces the script to use this value as the capacity of
# the device, so make shure there's at least this much space free.
MAX_SPACE_ALLOWED=0
# Where are the dirs to be freed located? ( eg, /glftpd/site/iso/ )
# Use a trailing frontslash (/).
INCOMINGPATH="/glftpd/site/iso/"
# Put any dirs you don't want deleted here (directly inside INCOMINGPATH). Put
# a dash directly followed by a capitol "i" (I) before every dirname. Also,
# separate them with space and DON'T use a trailing frontslash (/).
EXCLUDE_DIRS="-I temp -I lost+found -I pics.of.my.gf(doing_it_with_the_dog)"
# Do you want the script to write to glftpd.log? (for announcing) [y/n]
ANNOUNCE=y
# How long shall a nuked dir stay on site (in hours) before it's deleted?
DELETE_NUKES_TIME=48
# What do you want the botscript to call the section? ( eg, MP3, iSO, DivX )
SECTION_NAME=iSO
# What's the location of glftpd.conf?
GL_CONFIG_FILE="/etc/glftpd.conf"
# What's the location of glftpd.log?
GL_LOG_FILE="/glftpd/ftp-data/logs/glftpd.log"
################################################################################
# No more specifications needed below,just some editing if the script won't work
################################################################################
# Abort the script at first error ( when a command exits with non-zero status )
set -e
# Scan glftpd.conf for the nukestyle
NUKED_DIR_NAMES=`grep nukedir_style -i $GL_CONFIG_FILE | grep -v '#' | \
awk '{print $2}' | awk -F "-%" '{print $1}'`
# Check for disk usage/free space
if [ $MAX_SPACE_ALLOWED -eq 0 ]; then
FREE_ON_DEVICE=`df -m $INCOMINGPATH | grep "/dev/" | awk '{print $4}'`
else
SPACE_USED=`du -sm $INCOMINGPATH | awk '{print $1}'`
FREE_ON_DEVICE=`expr $MAX_SPACE_ALLOWED - $SPACE_USED`
fi
# Loop until enough space has been freed
until [ $FREE_ON_DEVICE -gt $MIN_FREE_SPACE ]; do
# Find oldest nuked dir and its modification time
DEL_DIR=`ls -lt $EXCLUDE_DIRS $INCOMINGPATH | grep $NUKED_DIR_NAMES | \
tail -n 1 | awk '{print $9}' | tr -d '/'`
TMP=`date -d "\`ls -lt --full-time $EXCLUDE_DIRS $INCOMINGPATH | \
grep $NUKED_DIR_NAMES | tail -n 1 | expand | tr -s " " | \
cut -d " " -f6-10\`" +%s`
# Delete oldest nuked dir if it's older then $DELETE_NUKES_TIME. Otherwise
# delete the oldest dir. Also get the size for the botscript.
if [ `expr '(' \`date +%s\` - $TMP ')' / 3600` -gt $DELETE_NUKES_TIME ] \
&& [ $DEL_DIR ]; then
DEL_DIR_SIZE=`du -sm $INCOMINGPATH$DEL_DIR | awk '{print $1}'`
rm -fr $INCOMINGPATH$DEL_DIR
else
DEL_DIR=`ls -lt $EXCLUDE_DIRS $INCOMINGPATH | tail -n1 | \
awk '{print $9}' | tr -d '/'`
if [ $DEL_DIR ]; then
DEL_DIR_SIZE=`du -sm $INCOMINGPATH$DEL_DIR | awk '{print $1}'`
rm -fr $INCOMINGPATH$DEL_DIR
fi
fi
# Announce deletion if $ANNOUNCE is set to "y"
if [ $ANNOUNCE = y ]; then
echo `date +"%a %b %d %T %Y"` AUTODEL: "$DEL_DIR_SIZE" "$SECTION_NAME" \
"$DEL_DIR" >> $GL_LOG_FILE
fi
# Are enough files deleted?
if [ $MAX_SPACE_ALLOWED -eq 0 ]; then
FREE_ON_DEVICE=`df -m $INCOMINGPATH | grep "/dev/" | awk '{print $4}'`
else
SPACE_USED=`du -sm $INCOMINGPATH | awk '{print $1}'`
FREE_ON_DEVICE=`expr $MAX_SPACE_ALLOWED - $SPACE_USED`
fi
done
exit