balamaci

Copy the file "foobar.txt" from a remote host to the local host:
$ scp your_username@remotehost.edu:foobar.txt /some/local/directory

Copy the file "foobar.txt" from the local host to a remote host:
$ scp foobar.txt your_username@remotehost.edu:/some/remote/directory

Copy the directory "foo" from the local host to a remote host's directory "bar":
$ scp -r foo your_username@remotehost.edu:/some/remote/directory/bar

Copy the file "foobar.txt" from the local host to a remote host using port 2264:

balamaci

ssh -p 3333 -L local_port:remote_host:remote_port user@machine
 - after a connection to 'machine' is established, all tunneled connections will be directed to the 'remote_host'.
1. ssh -p 3333 -L 3307:localhost:3306 sbalamaci@machine1.ocean.digital
2. ssh -p 3333 -L 3307:82.67.89.3:3306 sbalamaci@machine1.ocean.digital
it matters to which mysql interface the bind is done. 

careful with testing the setup with mysql client connecting to 'localhost' as it will bypass network and connect through a socket file. So even if you messed the setup it will connect to a local mysql instance if available.

to be ran on server for desktop publishing.
x11vnc -safer -localhost -nopw -noxdamage -ncache 10 -once -display :0

balamaci

du -hc --max-depth=1

balamaci

Writting an image to an sdcard:
sudo dd bs=4M if=2014-01-07-wheezy-raspbian.img of=/dev/mmcblk0


Backing up an sdcard
sudo dd if=/dev/mmcblk0 bs=1M | gzip -c > raspbian-2015-12-19.img.gz

balamaci

ssh flyby@inita 'bash -s' << 'DELIMITAT'
cd /home/flyby/airprice
/home/flyby/airprice/flyby-agent/command.sh stop
/home/flyby/airprice/flyby/command.sh stop
/home/flyby/airprice/build.sh
/home/flyby/airprice/flyby/command.sh start
/home/flyby/airprice/flyby-agent/command.sh start
DELIMITAT

balamaci

#
useradd -m -d /home/sbalamaci -s /bin/bash sbalamaci

#add to users
sudo usermod -a -G sudo sbalamaci

#generate ssh keys
ssh-keygen -t rsa -C "your_email@example.com"

#java8

balamaci

#!/bin/bash

MYDIR=$(dirname $0)
STATFILE=$MYDIR/command.pid
COMMAND_MARK="myprocess.jar"

MEMORY_OPTIONS="-Xms32m -Xmx256m"
MISC_OPTIONS="-Djava.awt.headless=true"
LOG_FILE=console.log

balamaci

proc            /proc           proc    defaults          0       0
/dev/mmcblk0p1  /boot           vfat    defaults          0       2
/dev/mmcblk0p2  /               ext4    defaults,noatime  0       1
# a swapfile is not a swap partition, so no using swapon|off from here on, use  dphys-swapfile swap[on|off]  for that

none            /var/run        tmpfs   size=1M,noatime,mode=0755  0  0
none            /var/log        tmpfs   size=1M,noatime,mode=0755  0  0
tmpfs           /tmp            tmpfs   defaults,noatime,mode=1777 0  0
/dev/sda1       /mnt/storage    ext4    defaults,nofail 	   0  2

balamaci

#show all programs listening TCP ports
lsof -Pan -i tcp

balamaci

avconv -rtsp_transport tcp -i rtsp://localhost:5554/Streaming/channels/101 -c copy -map 0 -f segment -segment_time 120 "./security/capture2-%03d.mkv"