Category Archives: Debian

SSH over SOCKS Proxy

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ssh server.tld -o ProxyCommand='nc -x proxy.tld:1234 %h %p'

makes use of ‘netcat-openbsd’

ssh server.tld -lBenutzer -p2210 -o ProxyCommand='nc -x proxy.tld:1234 %h %p'
sftp -P2210 -o "ProxyCommand nc -x proxy.tld:1234 %h %p" Benutzer@server.tld:/path/to/file.ext .
rsync -e "ssh -lBenutzer -p2210 -o ProxyCommand='nc -x proxy.tld:1234 %h %p'" server.tld:/path/to/file .

virsh cheat sheet

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list guests: 

virsh list --all

Show guests info: 

virsh dominfo $vmname

Start guest: 

virsh start $vmname

Shutdown guest: 

virsh shutdown $vmname

Poweroff guest: 

virsh destroy $vmname

Suspend guest: 

virsh suspend $vmname

Resume guest: 

virsh resume $vmname

Create guest from XML: 

virsh create xml_file.xml

Dump guest XML: 

virsh dumpxml $vmname

Modify guest: 

virsh edit $vmname

Remove guest definition: 

virsh undefine $vmname

Save guest state: 

virsh save $vmname $state_file

Restore guest state: 

virsh restore $state_file

Create guest: 

virt-install --name=$vmname --arch=x86_64 --vcpus=1 --ram=1024 --os-type=linux --os-variant=generic26 --hvm --connect=qemu:///system --network bridge:virbr0 --cdrom=/where/ever/u/store/isos/arch.iso --disk path=/where/ever/u/wish/guest.img,size=20 --accelerate --vnc --noautoconsole --keymap=de

Migrate guest: 

virsh migrate --live --copy-storage-inc --verbose $vmname qemu+ssh://destination/system

Linux SSHFS usage in fstab

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on e.g. Debian you have to install

aptitude install sshfs

edit /etc/fstab and add the line

sshfs#user@123.123.123.123:/what/ever/remote/	/where/you/wish/local/	fuse	uid=1003,gid=100,umask=0,allow_other,_netdev,ro		0	0

or directly in shell:

sshfs user@123.123.123.123:/what/ever/remote/ /where/you/wish/local/ -o idmap=user -o uid=1000 -o gid=100 -o umask=0 -o allow_other -o ro

Build RetroShare 0.5.4f on Debian 7 Wheezy

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install required packages

aptitude install libgpg-error-dev libupnp-dev libssl-dev libgnome-keyring-dev libxss-dev subversion gnupg-agent libupnp3 libqt4-dev g++ libgpgme11-dev
aptitude install g++ libgnome-keyring-dev libqt4-dev libxss-dev libssl-dev libupnp-dev subversion libbz2-dev libprotobuf-dev protobuf-compiler cmake

get latest SVN

svn co svn://svn.code.sf.net/p/retroshare/code/trunk retroshare

Compile/Make RetroShare

cd libbitdht/src && qmake && make clean && make -j2 && cd ../../
cd openpgpsdk/src && qmake && make clean && make -j2 && cd ../../
cd libretroshare/src && qmake && make clean && make -j2 && cd ../../
cd retroshare-gui/src && qmake && make clean && make -j2

Source
http://retroshare.sourceforge.net/wiki/index.php/UnixCompile

Asterisk under Debian Wheezy with SIP Softphone Ekiga or Jitsi

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install asterisk

aptitude install asterisk

edit /etc/asterisk/sip.conf

[general]
context = default
bindport = 5060
bindaddr = 0.0.0.0
tcpbindaddr = 0.0.0.0
tcpenable = yes

[1001]
type = friend
callerid = User 1001 <1001>
secret = 1001
host = dynamic
canreinvite = no
dtmfmode = rfc2833
mailbox = 1001
disallow = all
allow = ulaw
transport = udp

[1002]
type = friend
callerid = User 1002 <1002>
secret = 1002
host = dynamic
canreinvite = no
dtmfmode = rfc2833
mailbox = 1002
disallow = all
allow = ulaw
transport = udp

edit /etc/asterisk/extensions.conf

[general]
static=yes
writeprotect=no

[default]
exten => 1001,1,Answer()
exten => 1001,n,Dial(SIP/1001,20,tr)
exten => 1001,n,Hangup

exten => 1002,1,Answer()
exten => 1002,n,Dial(SIP/1002,20,tr)
exten => 1002,n,Hangup.

Soft Phones e.g. Ekiga or Jitsi