Schlagwort: Linux

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Roundcube Webmail Out of Office Message OOO

Login to your webmail (examples:,
Use the same username and password like in your Mail Account configured.
If you don’t know your password anymore and you use a Mac you can use the Keychain (Application in the Utilitys Folder) to find your password again.


When you are logged in klick on the Preference Button (German „Einstellungen“)


Klick on „Filter“

And add a new Filter with the plus symbol

– Add Filter Name
– choose „all Messages“
– choose „answer with message“
– Add the message content
– Add the message subject
– click on „add all email adresses“
– save the filter


Check if the Filter appears in the filter list and if you get a „successful message“


If you want to deactivate the OOO again you have to give the tick at the bottom


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Basic Linux (Debian/Mac) Commands

 Time information

# Command: timedatectl

root@debian:/home/pi# timedatectl
      Local time: Sun 2017-06-25 16:37:23 CEST
  Universal time: Sun 2017-06-25 14:37:23 UTC
        RTC time: Sun 2017-06-25 14:37:21
       Time zone: Europe/Vienna (CEST, +0200)
     NTP enabled: no
NTP synchronized: no
 RTC in local TZ: no
      DST active: yes
 Last DST change: DST began at
                  Sun 2017-03-26 01:59:59 CET
                  Sun 2017-03-26 03:00:00 CEST
 Next DST change: DST ends (the clock jumps one hour backwards) at
                  Sun 2017-10-29 02:59:59 CEST
                  Sun 2017-10-29 02:00:00 CET

Show space on mounted harddrives (human readable)

# Command df -h

root@debian:/home/pi# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1       189G   26G  154G  15% /
udev             10M     0   10M   0% /dev

Show information attached HD

# Command ls -l /sys/block/sd* | sed 's/.*\(sd.*\) -.*\(ata.*\)\/h.*/\2 => \1/'

root@debian:/home/pi# ls -l /sys/block/sd* | sed 's/.*\(sd.*\) -.*\(ata.*\)\/h.*/\2 => \1/'
ata3 => sda

Show information about harddrive

# Command: hdparm -I /dev/sda

# maybe you have to install hdparm with (apt-get install hdparm)

root@debian:/home/pi# hdparm -I /dev/sda


ATA device, with non-removable media
	Model Number:       VBOX HARDDISK                           
	Serial Number:      VB7749bd7c-37a37909 
	Firmware Revision:  1.0     
	Used: ATA/ATAPI-6 published, ANSI INCITS 361-2002 
	Supported: 6 5 4 
	Logical		max	current
	cylinders	16383	16383
	heads		16	16
	sectors/track	63	63
	CHS current addressable sectors:   16514064
	LBA    user addressable sectors:  268435455
	LBA48  user addressable sectors:  419430400
	Logical/Physical Sector size:           512 bytes
	device size with M = 1024*1024:      204800 MBytes
	device size with M = 1000*1000:      214748 MBytes (214 GB)
	cache/buffer size  = 256 KBytes (type=DualPortCache)
	LBA, IORDY(cannot be disabled)
	Queue depth: 32
	Standby timer values: spec'd by Vendor, no device specific minimum
	R/W multiple sector transfer: Max = 128	Current = 128
	DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6 
	     Cycle time: min=120ns recommended=120ns
	PIO: pio0 pio1 pio2 pio3 pio4 
	     Cycle time: no flow control=120ns  IORDY flow control=120ns
	Enabled	Supported:
	   *	Power Management feature set
	   *	Write cache
	   *	Look-ahead
	   *	48-bit Address feature set
	   *	Mandatory FLUSH_CACHE
	   *	Gen2 signaling speed (3.0Gb/s)
	   *	Native Command Queueing (NCQ)
Checksum: correct

Unpack .tgz files

#unpack in the same folder

tar zxvf file.tgz

#unpack in a different location
tar zxvf file.tgz -C /path/to/desination

Unpack .zip files

apt-get install unzip


Find files

"find" "path" "type" "Name"

find / -name "EXAMPLE"

Important OSX Commands for me ­čÖé

find TimeLapse/ -name "*.JPG" -exec mv '{}' JPG/ \;

Argon One Pi 4 Fan Control scirpt and commands

curl | bash
curl | bash

#change the config for the fan 
#default 55c - 10%
#default 60c - 55%
#default 65c - 100%


## Function of Keys is:
## SHUTDOWN - Long-press (>3s)
## Restart - double-click 
## Force Shutdown - Long-press (>5s)

Mac turn off packet signing for SMB 2 and SMB3

sudo -s
echo "[default]" >> /etc/nsmb.conf
echo "signing_required=no" >> /etc/nsmb.conf

Copy SSH Key to remote machine

ssh-copy-id <remote-user>@<remote-ipadress>

Remove SSH Key

ssh-keygen -R <hostname/ip>

if not the error is following 
ERROR: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
ERROR: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
ERROR: Someone could be eavesdropping on you right now (man-in-the-middle attack)!
ERROR: It is also possible that a host key has just been changed.
ERROR: The fingerprint for the ECDSA key sent by the remote host is

Start Screensaver via Terminal

open -b

File creation:

mkfile -n 100g temp_100GB_file
dd if=/dev/zero of=data.bin count=400 bs=1024

Zip Folder

zip -r folder_to_compress

unzip folder


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