diff ohne Kommentare

Posted on February 13, 2014 by bild

diff -u -B <(grep -vE '^\s*(#|$)' /path/to/file.1)  <(grep -vE '^\s*(#|$)' /path/to/file.2)

remove blank lines from text file

Posted on February 7, 2014 by bild

sed '/^$/d' /path/to/input/file.txt > output.txt
grep -v '^$' /path/to/input/file.txt > output.txt

#!/bin/bash
files="/path/to/input/files/*.txt"
for i in $files
do
  sed '/^$/d' $i > $i.out
  mv  $i.out $i
done

#!/bin/bash
files="/path/to/input/files/*.txt"
for i in $files
do
  sed '/^ *$/d' $i > $i.out
  mv $i.out $i
done

SSH over SOCKS Proxy

Posted on January 9, 2014 by bild

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

Posted on November 14, 2013 by bild

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

mop: a fancy stock terminal program

Posted on September 27, 2013 by bild

MOP

install dependencies (on Debian/Ubuntu)

aptitude install gccgo gccgo-4.9 golang-go git

set environment variable e.g.

export GOPATH=/home/user/gocode/
mkdir $GOPATH

get and compile

go get github.com/mop-tracker/mop
cd $GOPATH/src/github.com/mop-tracker/mop
make

enjoy 😀

go run $GOPATH/src/github.com/mop-tracker/mop/cmd/mop/main.go

Linux SSHFS usage in fstab

Posted on September 20, 2013 by bild

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

Posted on September 1, 2013 by bild

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

Install RetroShare 0.5.4e on Debian 7 Wheezy

Posted on August 23, 2013 by bild

echo 'deb http://download.opensuse.org/repositories/home:/AsamK:/RetroShare/Debian_7.0/ /' >> /etc/apt/sources.list.d/retroshare.list
wget http://download.opensuse.org/repositories/home:/AsamK:/RetroShare/Debian_7.0/Release.key -O - | sudo apt-key add -
aptitude update
aptitude install retroshare

PHPInfo in Bootstrap Style

Posted on July 16, 2013 by mace

Einfach in den Body der Bootstrap Seite reinkopieren.
<?php ob_start(); phpinfo(); $phpinfo = ob_get_clean();


# Body-Content rausholen

$phpinfo = preg_replace('#^.*<body>(.*)</body>.*$#s', '$1', $phpinfo);

# XHTML-Fehler korrigieren

$phpinfo = str_replace('module_Zend Optimizer', 'module_Zend_Optimizer', $phpinfo);

# <font> durch <span> ersetzen

$phpinfo = str_replace('<font', '<span', $phpinfo);

$phpinfo = str_replace('</font>', '</span>', $phpinfo);

#Table

$phpinfo = str_replace( 'border="0" cellpadding="3"', 'class="table table-bordered table-striped" style="table-layout: fixed;word-wrap: break-word;"', $phpinfo );

$phpinfo = str_replace('<tr class="h"><th>', '<thead><tr><th>', $phpinfo);

$phpinfo = str_replace('</th></tr>', '</th></tr></thead><tbody>', $phpinfo);

$phpinfo = str_replace('</table>', '</tbody></table>', $phpinfo);

# Schlüsselwörter grün oder rot einfärben

$phpinfo = preg_replace('#>(on|enabled|active)#i', '><span class="text-success">$1</span>', $phpinfo);

$phpinfo = preg_replace('#>(off|disabled)#i', '><span class="text-error">$1</span>', $phpinfo);

echo '<div id="phpinfo">'; echo $phpinfo; echo '</div>'; ?>

Copy Image via netcat

Posted on June 7, 2013 by mace

This is for a High-Bandwidth Network. If you have a Low-Bandwidth Network you can try to switch lzo with bzip2.

Target:
nc -v -l -p 19000 | lzop -c -d | pv -s 70G | dd bs=16M of=/root/foo.img

listen on port 19000 for connections.
decompress the datapackages.
pv displays a status bar.
and wirte them into a file.

Source:
dd bs=16M if=/root/bar.img | lzop -3 -c | nc -v 10.0.01 19000

dd reads the file in 16MB Blocks.
each block will be compressed with lzo.
nc connects 10.0.01 on port 19000 and pushes data.

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