Benutzer:Lyl

Jabber: lyl@jabber.ccc.de

Scripting

Übersicht

• Backup: Script zum automatisierten Einhängen einer Verschlüsselten Festplatte und starten eines Backups mit hilfe von rsnapshot.
• rename-image-r: Benennen von Bildern mit Ordnername und Aufnahmendatum im aktuellen Verzeichniss und allen Unterordnern (sofern Vorhanden). z.B: dsc_0001.jpg --> Gebrtstag-Max_2009-01-09_19-10-25-jpg

Backup

Script zum automatisierten Einhängen einer Verschlüsselten Festplatte und starten eines Backups mit hilfe von rsnapshot.

Inbetriebnahme

# Beispiel mit folgenden Variablen:
STATUSFILE=/root/script/backup.day
KEYFILE=backup/backup.key
BACKUPCLOSE=/root/script/backup-close

pacman -Sy rsnapshot
mkdir /extbackup/
mkdir /mnt/keyfs/
mount /mnt/usbstick-auf-dem-das-passwort-gespeichert-wir /mnt/keyfs/
echo "passwort-für-externe-hdd" /mnt/keyfs/$KEYFILE
echo 0 > $STATUSFILE
 
# Konfigurieren von rsnapshot: http://www.rsnapshot.org/howto/
# anlegen des Backup-Scripts Inhalt
# anpassen der Konfiguration am Anfang des Backup-Scripts
# anlegen von $BACKUPCLOSE

Script

Inhalt des Backup-Scripts (./backup):

#!/bin/sh
 
########################################################################
##                                                                    ##
## Script to automate mounting crypted, external hdd and start backup ##
## using rsnapshot.                                                   ##
##                                                                    ##
## by lyl  25.10.2008 - 10.02.2009                          GPL v3    ##
##                                                                    ##
########################################################################
 
#
# rsnapshot is configured in /etc/rsnapshot.conf
# parameters given to this script will be forwarded to rsnapshot
# see `man rsnapshot` for mor information
# 
# use cron or anacron to start backup automaticaly
#
# depends=('rsnapshot')
# optdepends=('anacron')
#
 
# filesystems
BACKUPFS=/dev/disk/by-id/usb-WDC_WD2500AB-1234567890-0\:0-part1
KEYFS=/dev/disk/by-id/usb-USB_DISK_USB_DISK_123456790-0\:0-part1
 
# files
STATUSFILE=/root/script/backup.day
KEYFILE=backup/backup.key
BACKUPCLOSE=/root/script/backup-close
 
# Number of hourly backups until more deep backups are made
DAYS=2
WEEKS=6
MONTHS=18
YEARS=90
 

# END OF CONFIG
 
#
# Mounting filesystems
#
echo "mounting filesystem containing the key-file..."
mount $KEYFS /mnt/keyfs/
 
echo "opening and mounting backup filesystem..."
cryptsetup luksOpen $BACKUPFS extbackup < /mnt/keyfs/$KEYFILE
mount /dev/mapper/extbackup /extbackup/
if (mount | grep -c "/dev/mapper/extbackup on /extbackup" > /dev/null)
then
       	echo "done"
else
	echo "fail"
	/root/script/backup-close
	exit 1
fi
 
#
# Start backing up
#
BACKUPNR=`cat $STATUSFILE`
echo "starting hourly backups (Nr. $BACKUPNR)..."
rsnapshot hourly $1
 
# calculation deepth
if (test $[$BACKUPNR % $DAYS] -eq 0); then
	BACKUPDAY=1
else
	BACKUPDAY=0
fi
 
if (test $[$BACKUPNR % $WEEKS] -eq 0); then
	BACKUPDAY=2
fi
 
if (test $[$BACKUPNR % $MONTHS] -eq 0); then
	BACKUPDAY=3
fi
 
if (test $[$BACKUPNR % $YEARS] -eq 0); then
	BACKUPDAY=4
fi
 

if (test $BACKUPDAY -ge 1)
then
	echo "done"
	echo "creating daily backup..."
	rsnapshot daily $1
	if (test $BACKUPDAY -ge 2)
	then
		echo "done"
		echo "creating weekly backup..."
		rsnapshot weekly $1
		if (test $BACKUPDAY -ge 3)
		then
			echo "done"
			echo "creating monthly backups..."
			rsnapshot monthly $1
			if (test $BACKUPDAY -ge 4)
			then
				echo "done"
				echo "creating yearly backups..."
				rsnapshot yearly $1
			fi
		fi
	fi
fi
echo `expr $BACKUPNR  + 1` > $STATUSFILE 
echo "done"
$BACKUPCLOSE
exit $?

Die Nummer das aktuellen Backups wird aus der Datei /root/script/backup.day ($STATUSFILE) gelesen:

1

Inhalt von /mnt/keyfs/backup/backup.key ($KEYFILE):

passwort-für-externe-hdd

Inhalt von /root/script/backup-close ($BACKUPCLOSE):

#!/bin/sh
ERRORCODE=0
echo "umounting key filesystem..."
umount /mnt/keyfs
 
echo "umounting backup filesystem..."
umount /dev/mapper/extbackup
 
echo "closing crypto device..."
cryptsetup luksClose extbackup
if (ls /dev/mapper | grep -c "extbackup" > /dev/null)
then
       	echo "fail"
	echo "if you have opened the backup-file-system, please close it and try again!"
	ERRORCODE=1
else
	if (ls /mnt/keyfs/ |grep -c "" > /dev/null)
	then
		echo "fail"
		echo "if you have opened the key-file-system, please close it and try again!"
		ERRORCODE=2
	fi
	echo "done"
fi
exit $ERRORCODE

rename-image-r

Benennen von Bildern mit Ordnername und Aufnahmendatum im aktuellen Verzeichniss und allen Unterordnern (sofern Vorhanden).

z.B: dsc_0001.jpg --> Gebrtstag-Max_2009-01-09_19-10-25-jpg

Inbetriebnahme

1. Erstellen einer ausführbaren Datei mit folgendem Inhalt

Script

#!/bin/sh 
 
#
# recrusive rename of *.jpg to JJJJ-MM-DD_HH-MM-SS.jpg
#
# by lyl 18.01.2009
#
# based on:
# $Id: iRename,v 1.1 2001/11/20 03:11:28 vijoy Exp vijoy $
# http://www.varp.net/photos/download.html
# 
 
#
#CONFIG:
#
#text to write in front or after date
# "dir" - the directory-name the image is in
# "original" -  the original (current) name of the image (be careful when re-renameing)
front="dir"
end="original"
 
#seperators
# seperator: between JJJJ,MM,DD and HH,MM,SS
# seperatorddhh between DD,HH and $front,timestamp,$end if $front/$end contain "dir" or "original"
seperator="-"
seperatorddhh="_"
 
#overwrite config via parameters
 #not implemented jet...
 
# Cleanup and create input
echo "renaming files in `pwd`..."
ls --escape *.jpg *.JPG | while read imgname
do
  if [ "$imgname" != "" ];then
    if [ ! -f "$imgname" ]; then
        echo "$imgname not found."
        break
    fi
# Extracting image information
    info=`head "$imgname"| strings| \
    	grep -e "19..:..:.. ..:..:.." -e "20..:..:.. ..:..:.." -e "21..:..:.. ..:..:.."`
    orgname=`echo $imgname| awk '{ print substr( $0, 0 , length($0) - 4 ) }'`
# Set name
    newname=`echo $info|cut -d ' ' -f 1`"$seperatorddhh"`echo $info|cut -d ' ' -f 2`
    newname=`echo $newname|sed s/:/"$seperator"/g`
    
    if [ "$front" == "dir" ]
    then
	    newname=`echo ${PWD##*/}`"$seperatorddhh""$newname"
    else
	if [ "$front" == "original" ]
	then
		newname=$orgname"$seperatorddhh"$newname
	else
		newname=$front$newname
	fi
    fi
    
    if [ "$end" == "dir" ]
    then
	    newname="$newname""$seperatorddhh"`echo ${PWD##*/}`".jpg"
    else
	if [ "$end" == "original" ]
	then
		newname=$newname"$seperatorddhh"$orgname".jpg"
	else
		newname=$newname$end".jpg"
	fi
    fi
 
# Rename only if valid newname
    if [ "X$newname" != "X++" ] && [ "$imgname" != "" ] && [ "$imgname" != "$newname" ]
    then
    	mv -i "$imgname" "$newname"
    fi
  fi
done
 
# Do the smae for each subdirectory
ls -l --escape | grep '^d'|cut -d ':' -f 2- | cut -d ' ' -f 2-| while read imgsubdir
do
	if [ "$imgsubdir" != "" ];then
		cd "$imgsubdir"
		if [ "`echo $0 |cut -b 1`" == "/" ]
		then
			echo $0
			$0
		else
			../$0
		fi
		cd ..
	fi
done

macchanger

Daemon zum zuweisen einer zufälligen MAC-Addresse.

Inbetriebnahme

1. Erstellen der Datei /etc/rc.d/macchanger mit unten stehendem Inhalt
2. Eintragen in /etc/rc.configs vor network: DAEMONS(... macchanger network ...)

Script

#!/bin/bash
. /etc/rc.d/functions
case "$1" in
        start)
                stat_busy "Starting Network"
                error=0
 
                #change mac of eth0
                ifconfig eth0 down
                 macchanger -A eth0 > /dev/null
                 ifconfig eth0 up
 
                #change mac of wlan
                ifconfig wlan0 down
                 macchanger -A wmaster0 > /dev/null
                 macchanger -A wlan0 > /dev/null
                 ifconfig wlan0 up
 
                if [ $error -eq 0 ]; then
                        stat_done
                else
                        stat_fail
                fi
 
                ;;
        stop)
                stat_busy "I cant remember my old MAC-Addresses"
                stat_done
                ;;
        restart)
                $0 start
                ;;
        *)
                echo "usage: $0 {start|stop|restart}"
esac