Category: General / Allgemein

02.06.2017

looks different in every distro… Debian8 root@debian:~# uname -a; # tested on Linux debian 3.16.0-4-686-pae #1 SMP Debian 3.16.43-2 (2017-04-30) i686 GNU/Linux root@debian:~# ll /etc/X11/ total 72K drwxr-xr-x 2 root root 4.0K Jun 2 15:39 app-defaults -rw-r–r– 1 root root […]

29.05.2017

Everything in Linux is presented as files and folders – even devices – even your printer. And that is also how almost everything is read-write-accessed – as files. /dev, /proc and /sys are „virtual (pseudo) filesystems“ (not existing on harddisk, […]

26.05.2017

Yay! There are now 3500 Linux games on Steam https://t.co/AMTnssOUVQ i wonder if you can play all android(java) games on a PC as well?

24.05.2017

What is glibc? The GNU C Library project provides the core libraries for the GNU system and GNU/Linux systems, as well as many other systems that use Linux as the kernel. These libraries provide critical APIs including ISO C11, POSIX.1-2008, […]

19.05.2017

What are kernel modules? What exactly is a kernel module? Modules are pieces of code that can be loaded and unloaded into the kernel upon demand without rebooting the system. Without modules, we would have to build monolithic kernels and […]

19.05.2017

yeah i know i sometimes make fun of distributions that have like a partition for every /root/folder but well yes it has it’s reasons. suse12 uname -a; # tested with Linux suse 4.4.21-69-default #1 SMP Tue Oct 25 10:58:20 UTC […]

linux CentOS7 – install MATE Gnome2 based Desktop
17.05.2017

yum install epel-release yum groupinstall „X Window system“ yum groupinstall „MATE Desktop“ systemctl isolate graphical.target; # Tell your systemd to start the graphical.target per default unlink /etc/systemd/system/default.target; ln -s /usr/lib/systemd/system/graphical.target /etc/systemd/system/default.target; reboot; you should get a grafical login prompt now […]

16.05.2017

this article might be largely incomplete… kernel ringbuffer boot messages messages from the kernel during first stages of boot. # all distros dmesg; # show kernel ring buffer boot messages log # Centos7 only (debian8 has the file but it […]

15.05.2017

the commands used for xfs are different. this is only valid for ext3/ext4. preparation: you should move your /home to a separate partition. Warning! You will need to have „physical“ access to the server’s console in order to perform these […]

11.05.2017

one sunny day on Debian8.7 as a result of this action: dwaves.de/2017/05/10/linux-sftp-ssh-how-to-limit-users-to-their-home-directories/ i got the stated error message: /usr/bin/xauth:  timeout in locking authority file /home/user/.Xauthority root@debian:/home/user# ls -lah|grep ICE -rwxrwxrwx  1 user user 4.7K May 10 16:25 .ICEauthority # chmod […]

linux ssh – generate public private keys
05.05.2017

giving a passphrase seems like a good idea – because it will protect your key (if passphrase is sufficiently strong) if it get’s stolen. So even if somebody manages to hack into your client and steal your private ssh-key – […]

05.05.2017

fallocate -l 1G 1GBybe.testfile; # with fallocate dd if=/dev/urandom of=1GBybe.testfile bs=64M count=16 iflag=fullblock; # generate 1GByte test file that contains random data https://www.cyberciti.biz/faq/howto-create-lage-files-with-dd-command/ https://superuser.com/questions/470949/how-do-i-create-a-1gb-random-file-in-linux

04.05.2017

DO NOT SEND YOUR PASSWORT WITH TELNET! people might capture those unencrypted passwords on backbone-level… the NSA is the largest state-sponsored hacking organization on this planet. with telnet you can test what service and even it’s version number is running […]

04.05.2017

what real value can add linux to mankind? efficiency – less power consumed – less waste – because it runs well on old hardware as well transparency – should actually dissalow tyrannie and dictatorship – because you SHOULD acutally be […]