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Warning: Undefined array key "media" in /var/www/html/feed.php on line 235
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Warning: Undefined array key "media" in /var/www/html/feed.php on line 419
Warning: Undefined array key "media" in /var/www/html/feed.php on line 226
Warning: Undefined array key "date" in /var/www/html/feed.php on line 233
Warning: Undefined array key "media" in /var/www/html/feed.php on line 235
Warning: Undefined array key "media" in /var/www/html/feed.php on line 305
Warning: Undefined array key "media" in /var/www/html/feed.php on line 419 Random bits of knowledge linux_og_unix
https://wiki.20dage.dk/
2025-03-31T23:24:54+00:00Random bits of knowledge
https://wiki.20dage.dk/
https://wiki.20dage.dk/lib/tpl/dokuwiki/images/favicon.icotext/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:android
https://wiki.20dage.dk/doku.php?id=linux_og_unix:android&rev=1697915943&do=diff
Tilbage til Linux og Unix
----------
Android
backup en ikke rooted enhed
adb backup -apk -nosystem -shared -all -f c:\mybackup.ab
Fra yakjuxw til yakju: <http://webtrickz.com/easiest-way-to-change-galaxy-nexus-from-yakjuxw-non-yakju-to-android-4-0-4-yakjutakju/>text/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:asus
https://wiki.20dage.dk/doku.php?id=linux_og_unix:asus&rev=1697915943&do=diff
Asus
Fjerne dns-probe fra RT-AC66U
telnet <router-ip>
nvram show | grep dns_probe
dns_probe=0text/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:automation_tools
https://wiki.20dage.dk/doku.php?id=linux_og_unix:automation_tools&rev=1697915943&do=diff
Tilbage til Linux og Unix
----------
Automation tools for Linux
Continuous integration
* Comparison of continuous integration software
* Bamboo
* Buildbot
* Buildout
* Jenkins
* Travis
* Strider
* go
* Hudson
* Gitlab CI
Metrics
* Prometheus
Configuration management
* Comparison of open-source configuration management software
* Ansible
* CFEngine
* Chef
* Puppet
* Salt Stack
Code review
* List of tools for code review
* Gerrit
* Review Board
Vi…text/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:backup
https://wiki.20dage.dk/doku.php?id=linux_og_unix:backup&rev=1697915942&do=diff
Tilbage til Sysadm
----------
Backup
* bup
* clonezilla
* rsync
* Borg
* Time shifttext/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:centos
https://wiki.20dage.dk/doku.php?id=linux_og_unix:centos&rev=1697915942&do=diff
Tilbage til Linux og Unix
----------
CENTOS
Efter en Centos minimal installation ønsker man nok at gøre flg.
# ifup eth0
# vi /etc/sysconfig/network-scripts/ifcfg-eth0
# yum install deltarpm
# yum groupinstall base
# yum update
# ## RHEL/CentOS 6 32-Bit ##
# wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
# rpm -ivh epel-release-6-8.noarch.rpm
## RHEL/CentOS 6 64-Bit ##
# wget http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.r…text/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:citrix
https://wiki.20dage.dk/doku.php?id=linux_og_unix:citrix&rev=1697915942&do=diff
Tilbage til Linux og Unix
----------
Citrix
På Debian/Ubuntu/Mint:
Download fra: citrix.com
Fix pakken (Citrix er nogle fjolser)
cd ~/Downloads
mkdir ica_temp
dpkg-deb -x icaclient_*amd64.deb ica_temp
dpkg-deb --control *amd64.deb ica_temp/DEBIAN
sudo vi ica_temp/DEBIAN/controltext/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:clonezilla
https://wiki.20dage.dk/doku.php?id=linux_og_unix:clonezilla&rev=1697915945&do=diff
Tilbage til Backup
----------
Clonezilla
Parameter brugt hos SuperUsers
ocs_live_keymap="NONE"
locales=en_US.UTF-8
ocs_prerun1="dhclient -v eth0"
ocs_prerun2="dhclient -v eth1"
ocs_prerun3="mount -t cifs //193.88.250.5/cz /home/partimag -o user=czl,pass=password"
ocs_live_run="ocs-sr -g auto -e1 auto -e2 --batch -r -j2 -p reboot restoredisk LinuxMint16-SE sda"
ocs_postrun1="mkdir /tmp/pxelinux"
ocs_postrun2="mount -t cifs //193.88.250.5/pxelinux /tmp/pxelinux -o user=czl,pass=password"
ocs_…text/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:cloud
https://wiki.20dage.dk/doku.php?id=linux_og_unix:cloud&rev=1697915944&do=diff
* <https://bitnami.com/>text/html2023-10-21T19:19:06+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:crontab
https://wiki.20dage.dk/doku.php?id=linux_og_unix:crontab&rev=1697915946&do=diff
Tilbage til Sysadm
----------
Crontab
@reboot Run once, at startup.
@yearly Run once a year, "0 0 1 1 *".
@annually (same as @yearly)
@monthly Run once a month, "0 0 1 * *".
@weekly Run once a week, "0 0 * * 0".
@daily Run once a day, "0 0 * * *".
@midnight (same as @daily)
@hourly Run once an hour, "0 * * * *".text/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:debian
https://wiki.20dage.dk/doku.php?id=linux_og_unix:debian&rev=1697915945&do=diff
DEBIANtext/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:dhcp
https://wiki.20dage.dk/doku.php?id=linux_og_unix:dhcp&rev=1697915942&do=diff
Tilbage til Sysadm
----------
DHCP
* <http://www.unixmen.com/setup-dhcp-server-centos-6-5/>text/html2023-10-21T19:19:06+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:distros
https://wiki.20dage.dk/doku.php?id=linux_og_unix:distros&rev=1697915946&do=diff
Tilbage til Linux og Unix
----------
Distros
* CentOS
* Debian
* Fedora
* Minttext/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:dns
https://wiki.20dage.dk/doku.php?id=linux_og_unix:dns&rev=1697915944&do=diff
Tilbage til Sysadm
----------
DNS
For at lave sshfp records skal man skrive:
ssh-keygen -r my.domain.comtext/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:docker
https://wiki.20dage.dk/doku.php?id=linux_og_unix:docker&rev=1697915945&do=diff
Tilbage til Sysadm
----------
Docker
* pdftk eksempel
* Docker Composetext/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:docker_compose
https://wiki.20dage.dk/doku.php?id=linux_og_unix:docker_compose&rev=1697915944&do=diff
Tilbage til Docker
----------
Docker Compose
* Website eksempel
docker-compose build
docker-compose uptext/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:doom
https://wiki.20dage.dk/doku.php?id=linux_og_unix:doom&rev=1697915942&do=diff
Doom
* Zandronum
* ZDoomtext/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:dosbox
https://wiki.20dage.dk/doku.php?id=linux_og_unix:dosbox&rev=1697915943&do=diff
Tilbage til Linux og Unix
----------
DOSBOX
dosbox -conf <config-file>
Best dos-games
Games that I want to play. Many other games was also good but I has just played them too much.
* Monkey Island 2
* Day of The Tentacle
* Doom
* Quake
* Tyrian 2000
* Terminal Velocity
* Descenttext/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:dovecot
https://wiki.20dage.dk/doku.php?id=linux_og_unix:dovecot&rev=1697915942&do=diff
Dovecot
Dovecot guide:
* <http://library.linode.com/email/postfix/dovecot-mysql-centos-5>
* <http://library.linode.com/email/postfix/dovecot-mysql-debian-6-squeeze>
Test imaps:
echo | openssl s_client -connect <server-ip>:993
Lav certifikater:
openssl req -new -x509 -days 3650 -nodes -out /etc/pki/dovecot/certs/dovecot.pem -keyout /etc/pki/dovecot/private/dovecot.pemtext/html2023-10-21T19:19:01+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:efi
https://wiki.20dage.dk/doku.php?id=linux_og_unix:efi&rev=1697915941&do=diff
EFI
Opgradering fra Windows 8 til Windows 8.1 kan skabe problemer.
Her er måske løsningen: <http://askubuntu.com/questions/240496/how-to-show-grub-after-install-ubuntu-over-windows-8>text/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:email
https://wiki.20dage.dk/doku.php?id=linux_og_unix:email&rev=1697915945&do=diff
Tilbage til Linux og Unix
----------
EMAIL
* Courier
* Dovecottext/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:fedora
https://wiki.20dage.dk/doku.php?id=linux_og_unix:fedora&rev=1697915944&do=diff
Tilbage til Distros
----------
Fedora
DEBUGGING
Fedora StackTraces
For at installere en debug-version af en pakke incl. dependencies:
sudo debuginfo-install <program>
For at installere en debug-version af en pakke uden dependecies:
sudo yum --enablerepo fedora-debuginfo,updates-debuginfo install foo-debuginfotext/html2023-10-21T19:19:01+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:filesystemer
https://wiki.20dage.dk/doku.php?id=linux_og_unix:filesystemer&rev=1697915941&do=diff
Tilbage til Sysadm
----------
Filesystemer
* How To fix a mangled partition table on Linuxtext/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:flac
https://wiki.20dage.dk/doku.php?id=linux_og_unix:flac&rev=1697915944&do=diff
Tilbage til Linux og Unix
----------
FLAC
Hvis man har en enkelt flac fil med et helt album og en tilhørende cue fil
cuebreakpoints sample.cue | shnsplit -o flac sample.flac
cuetag sample.cue split-track*.flac
Hvis man mangler en cue-file, kan det være at den er indbygget i flac-filentext/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:google_coder
https://wiki.20dage.dk/doku.php?id=linux_og_unix:google_coder&rev=1697915943&do=diff
Google Coder
* Download image fra: <http://googlecreativelab.github.io/coder/>
Kør det under Linux: <http://pi.gadgetoid.com/article/running-google-coder-on-your-existing-raspberry-pi-or-desktop-pc>
Node.js is also a requirement.
Once everything is up and running, point your browser at <https://localhost:8081/>.
sudo useradd -M pi
sudo apt-get install redis-server
cd ~/projects
git clone https://github.com/googlecreativelab/coder.git
cd coder/coder-base
npm install
npm starttext/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:grub
https://wiki.20dage.dk/doku.php?id=linux_og_unix:grub&rev=1697915942&do=diff
Tilbage til Sysadm
----------
GRUB
* EFI problemer
* SecureBoot problemer
* Fix low resolution grub and splash screen
* Grub passwordstext/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:harden
https://wiki.20dage.dk/doku.php?id=linux_og_unix:harden&rev=1697915942&do=diff
<http://www.cyberciti.biz/faq/linux-hide-processes-from-other-users/>text/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:hpc
https://wiki.20dage.dk/doku.php?id=linux_og_unix:hpc&rev=1697915942&do=diff
Tilbage til Linux og Unix
----------
HPC
* Rocks Clusters distro
* Ganglia
* HTCondor
* Hadoop
* MapReducetext/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:hyper-v
https://wiki.20dage.dk/doku.php?id=linux_og_unix:hyper-v&rev=1697915944&do=diff
Tilbage til Linux og Unix
----------
Hyper-V
Virker fint med nyeste version af CentOS.text/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:ipv6
https://wiki.20dage.dk/doku.php?id=linux_og_unix:ipv6&rev=1697915944&do=diff
IPv6
Disable IPv6 kan gøres vha. sysctl
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1text/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:kernel
https://wiki.20dage.dk/doku.php?id=linux_og_unix:kernel&rev=1697915942&do=diff
Linux Kernel noter
namespaces
* <https://ilearnedhowto.wordpress.com/tag/unshare/>
* <https://blogs.rdoproject.org/2015/08/hands-on-linux-sandbox-with-namespaces-and-cgroups/>
* <https://security.stackexchange.com/questions/209529/what-does-enabling-kernel-unprivileged-userns-clone-do>
* <https://lwn.net/Articles/673597/>
sudo su -c 'echo 1 > /proc/sys/kernel/unprivileged_userns_clone'text/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:kubernetes
https://wiki.20dage.dk/doku.php?id=linux_og_unix:kubernetes&rev=1697915945&do=diff
Kubernetes
Install kubernetes på CentOS 7
* <https://kubernetes.io/docs/tasks/tools/install-kubectl/#install-kubectl-on-linux>
* <https://www.serverlab.ca/tutorials/containers/kubernetes/how-to-add-workers-to-kubernetes-clusters/>
Swap skal disables på manager(s) og workers:
swapoff /dev/dm-1
sed -i '/swap/s/^/#/' /etc/fstab
Desværre så skal SELinux vistnok disables:
# Set SELinux in permissive mode (effectively disabling it)
setenforce 0
sed -i 's/^SELINUX=enforcing$/SELINUX=permis…text/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:linux_gaming
https://wiki.20dage.dk/doku.php?id=linux_og_unix:linux_gaming&rev=1697915945&do=diff
Tilbage til Linux og Unix
----------
Linux Gaming
* Doom
* Re-Volt
* Steamtext/html2023-10-21T19:19:06+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:lpi-201
https://wiki.20dage.dk/doku.php?id=linux_og_unix:lpi-201&rev=1697915946&do=diff
Tilbage til LPIC
----------
LPI 201
Installere cacti:
<code>
yum install cactitext/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:lpi-201_nyt_pensum
https://wiki.20dage.dk/doku.php?id=linux_og_unix:lpi-201_nyt_pensum&rev=1697915943&do=diff
LPI-201 Nyt Pensum
Materialet til LPI-201 kan forberes på følgende områder
Capacity Planning
* iostat, netstat, sar, vmstat
* Awareness af Nagios, MRTG, Cacti
* collectd
Linux Kernel
* Awareness af dracut
* mkinitrd, mkinitramfs
*text/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:lpic
https://wiki.20dage.dk/doku.php?id=linux_og_unix:lpic&rev=1697915943&do=diff
Tilbage til Linux og Unix
----------
LPIC
* pv
* LPI-201
* LPI-201 nyt pensum
LPIC-3
* LPI-3
* <http://old-blog.ooz.ie/search/label/LPIC>
* <https://lpi.universe-network.net/doku.php?id=wiki:certification:lpic301>text/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:microsoft_sql-server
https://wiki.20dage.dk/doku.php?id=linux_og_unix:microsoft_sql-server&rev=1697915944&do=diff
MSSQL Server
Der er rimeligt nemt at installere Microsofts SQL-Server på linux, men der er et
par små problemer.
* libcurl3 vs. libcurl4
* memory-usage
<https://github.com/wheelcomplex/mssql-server-ubuntu-18.04>text/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:mint
https://wiki.20dage.dk/doku.php?id=linux_og_unix:mint&rev=1697915944&do=diff
Tilbage til Distros
----------
Mint
Hvis eclipser crasher med libsoup problemet, så tilføj til eclipse.ini
-Dorg.eclipse.swt.browser.DefaultType=mozilla
Hvis apt-get update fejler med fejlen: E: Problem with MergeList
rm -r /var/lib/apt/lists/*text/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:misc
https://wiki.20dage.dk/doku.php?id=linux_og_unix:misc&rev=1697915944&do=diff
* <https://kukuruku.co/post/the-collapse-of-the-unix-philosophy/>
* Commentary on the Sixth Edition UNIX Operating Systemtext/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:mysql-mariadb
https://wiki.20dage.dk/doku.php?id=linux_og_unix:mysql-mariadb&rev=1697915942&do=diff
Tilbage til Linux og Unix
----------
MySQL / MariaDB
SQL for at checke alle tabler
mysql -B -u root -p -e 'select concat(“check tables ”,tables.table_schema,“.”,tables.table_name,“;”) from information_schema.tables;text/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:netflix
https://wiki.20dage.dk/doku.php?id=linux_og_unix:netflix&rev=1697915943&do=diff
Tilbage til Linux og Unix
----------
Netflix
Test og virker på min Ubuntu 12.04
sudo apt-add-repository ppa:ehoover/compholio
sudo apt-get update && sudo apt-get install netflix-desktop
Fedora 19 - 64 bit
sudo yum -y install http://sourceforge.net/projects/postinstaller/files/fedora/releases/19/x86_64/updates/wine-silverlight-1.7.7-1.fc19.x86_64.rpm
sudo yum -y install http://sourceforge.net/projects/postinstaller/files/fedora/releases/19/x86_64/updates/netflix-desktop-0.7.0-7.fc19.noar…text/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:network
https://wiki.20dage.dk/doku.php?id=linux_og_unix:network&rev=1697915945&do=diff
Tilbage til Linux og Unix
----------
Network
* SSH
* Nethogstext/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:networking
https://wiki.20dage.dk/doku.php?id=linux_og_unix:networking&rev=1697915944&do=diff
Tilbage til Linux og Unix
----------
Networking
* List open ports on linux
netstat -lnptu
* All network activity by a user
lsof -a -u <username -i
* IPv6
* OpenSSH
* Omdåb p2p1 til eth0: <http://surachartopun.com/2012/07/learn-fedora-network-interface-s.html>text/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:openssh
https://wiki.20dage.dk/doku.php?id=linux_og_unix:openssh&rev=1697915942&do=diff
OpenSSH
Hvis det tager lang tid at logge ind, kan det være et kerberos check fra klienten, der skal disables:
$ ssh -v <remotemachine>
[...]
debug1: Unspecified GSS failure. Minor code may provide more information
Så tilføj følgende til ~/.ssh/configtext/html2023-10-21T19:19:06+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:openvpn
https://wiki.20dage.dk/doku.php?id=linux_og_unix:openvpn&rev=1697915946&do=diff
Tilbage til Sysadm
OpenVPN
En how-to der beskriver OpenVPN på en Centos 6.5: setup-openvpn-server-client-centos-6-5text/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:overvagning
https://wiki.20dage.dk/doku.php?id=linux_og_unix:overvagning&rev=1697915945&do=diff
Tilbage til Sysadm
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Server overvågning
* Guide til collectd: Install Collectd (Ubuntu 13.10)text/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:packagemanagement
https://wiki.20dage.dk/doku.php?id=linux_og_unix:packagemanagement&rev=1697915943&do=diff
Tilbage til Sysadm
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Package Management
DEB
Apply a source patch
dpkg-source -x wu-ftpd_2.6.0-4.dsc
Hente sourcen til en debian pakke ved at
tilføje en deb-src linje til /etc/apt/sources.list
og hente sourcen med
apt-get source <pakke>
Debian package guide
RPM
Bygge egne rpm-pakke udfra source:text/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:pdftk_eksempel
https://wiki.20dage.dk/doku.php?id=linux_og_unix:pdftk_eksempel&rev=1697915944&do=diff
Tilbage til Docker
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Eksempel med at få pdftk installeret
Forbedrelse:
sudo apt install docker.io
sudo usermod -a -G docker $USER
Terminal 1:
sudo docker run -it ubuntu:16.04 bash
apt update
apt install pdftk
Terminal 2:
sudo docker ps -a
sudo docker commit CONTAINER_ID ubuntu_pdftktext/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:postfix_og_dovecot
https://wiki.20dage.dk/doku.php?id=linux_og_unix:postfix_og_dovecot&rev=1697915945&do=diff
Tilbage til Sysadm
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Postfix og Dovecot
Koden til at encode AUTH PLAIN:
echo -ne '\000martin@linux.com\000agent007'| openssl base64text/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:propaganda
https://wiki.20dage.dk/doku.php?id=linux_og_unix:propaganda&rev=1697915945&do=diff
Tilbage til Linux og Unix
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Linux/OSS Progaganda
* The man behind Munichs Migration of 15000 PCs
* Why Linux Will Never Suffer From Viruses
* Code quality - Opensource vs. proprietary
* Switching From Microsoft Office To LibreOffice Saves Toulouse 1 Million Euros
* Holbæk erstatter office med googletext/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:pxe_server
https://wiki.20dage.dk/doku.php?id=linux_og_unix:pxe_server&rev=1697915943&do=diff
Tilbage til Linux og Unix
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PXE Server
* <https://archyslife.blogspot.com/2018/01/setting-up-pxe-server-with-centos-7.html>
* Centos 7 minimal
yum update -y
yum install httpd xine.std syslinux tftp-server dhcp -y
sed -i '/disable/s/no/yes/' /etc/xinetd.d/tftp
sed -i '/SELINUX=/s/enforcing/disabled/' /etc/selinux/config
cp /usr/share/syslinux/{reboot.c32,pxelinux.0,menu.c32,memdisk,mboot.c32,chain.c32} /var/lib/tftpboot/
mkdir /var/lib/tftpboot/pxelinux.cfg
systemctl enable …text/html2023-10-21T19:19:01+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:raspberry_pi
https://wiki.20dage.dk/doku.php?id=linux_og_unix:raspberry_pi&rev=1697915941&do=diff
Tilbage til Sysadm
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Raspberry Pi
Folk, der har en raspberry pi online:
* Webserver with camera
Steder, man kan købe en raspberry pi fra Danmark:
* Let Elektronik
* Forum - køb og salg
* RS Components
* Farnell
Ting, som kan lave med den:
* Google Coder
Scanning med en Raspberry Pi:
* Scanning woes revisited: A Raspberry Pi scanning machine
* Turn your Raspberry Pi into a scan-to-cloud devicetext/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:re-volt
https://wiki.20dage.dk/doku.php?id=linux_og_unix:re-volt&rev=1697915943&do=diff
Tilbage til Linux og Unix
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Re-Volt
* Re-Volt forum
* RVGL main site
*
IRC
Austnet IRC der hedder #revolt-chattext/html2023-10-21T19:19:01+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:regexp
https://wiki.20dage.dk/doku.php?id=linux_og_unix:regexp&rev=1697915941&do=diff
* Lea Verou — /Reg(exp){2}lained/: Demystifying Regular Expressionstext/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:rpm
https://wiki.20dage.dk/doku.php?id=linux_og_unix:rpm&rev=1697915945&do=diff
RPM
Bygge egne rpm-pakke udfra source:
mkdir $HOME/rpm
mkdir $HOME/rpm/SOURCES
mkdir $HOME/rpm/SPECS
mkdir $HOME/rpm/BUILD
mkdir $HOME/rpm/SRPMS
mkdir $HOME/rpm/RPMS
mkdir $HOME/rpm/RPMS/{i686,x86_64}
echo "%_topdir $HOME/rpm" >> $HOME/.rpmmacros
rpmbuild -ta courier-0.40.tar.bz2text/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:scsi
https://wiki.20dage.dk/doku.php?id=linux_og_unix:scsi&rev=1697915945&do=diff
Tilbage til Linux og Unix
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SCSI
echo "- - -" | sudo tee /sys/class/scsi_host/host*/scantext/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:selinux
https://wiki.20dage.dk/doku.php?id=linux_og_unix:selinux&rev=1697915945&do=diff
Tilbage til Linux og Unix
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SELinux
Efter at have flyttet /home til en anden partition kunne jeg ikke logge ind
Løsning:
chcon -t home_root_t /home
* Digital Ocean - An introduction to SELinux
* Debian handbook on SELinux
* SELinux for Apache
* SELinux Project
* SELinux References & Cheatsheetstext/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:ssh
https://wiki.20dage.dk/doku.php?id=linux_og_unix:ssh&rev=1697915942&do=diff
Tilbage til Linux og Unix
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SSH
En reverse tunnel:
ssh -R 1337:localhost:22 remote_user@remote_servertext/html2023-10-21T19:19:01+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:start
https://wiki.20dage.dk/doku.php?id=linux_og_unix:start&rev=1697915941&do=diff
* Android
* Asus
* Automation tools
* Citrix
* Cloud
* Distros
* DosBox
* Email
* Flac
* HPC
* Kernel
* Kubernetes
* Linux Gaming
* LPIC
* Hyper-V
* Microsoft SQL-server
* Misc
* MySQL-MariaDB
* Netflix
* Network
* PXE server
* Propaganda
* Raspberry Pi
* PAM
* RegExp
* Scsi
* SysAdm
* Terminal
* Video redigering
* VIM
* VirtualBox
* Xtext/html2023-10-21T19:19:01+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:steam
https://wiki.20dage.dk/doku.php?id=linux_og_unix:steam&rev=1697915941&do=diff
Tilbage til Linux og Unix
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STEAM
OpenGL GLX context is not using direct rendering, which may cause performance problems.
For more information visit <https://support.steampowered.com/kb_article.php?ref=9938-EYZB-7457>.
yum install xorg-x11-drv-nvidia-libs.i686
echo "blacklist nouveau" > /etc/modprobe.d/nouveautext/html2023-10-21T19:19:01+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:stresstest
https://wiki.20dage.dk/doku.php?id=linux_og_unix:stresstest&rev=1697915941&do=diff
Stress din Linux
* StressLinux
stress --cpu 2 --vm 1 --vm-bytes 128M --io 1
* sensors-detect fra lm-sensors pakken til overvågning
* htop
* KSysGuard fra KDE
* Benchmark vha. BSMBenchtext/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:sysadm
https://wiki.20dage.dk/doku.php?id=linux_og_unix:sysadm&rev=1697915944&do=diff
Tilbage til Linux og Unix
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System Administration
* Backup
* Crontab
* DHCP
* Docker
* DNS
* Filesystemer
* GRUB
* Harden
* Postfix og dovecot
* Networking
* OpenVPN
* Overvågning
* Package Management
* Systemd vs. SysVinit
* PV
* password store
* phpSysInfo
* RackTables
* Rsnapshot
* SELinux
* Stress din Linux
* saidar -c ( statgrab-tools package )
* Postfix Admin
* adminer - Alternativ til phpMyAdmin
* Swiss File Knife
* ntop
* …text/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:sysstat
https://wiki.20dage.dk/doku.php?id=linux_og_unix:sysstat&rev=1697915943&do=diff
Tilbage til Sysadm
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Sysstat
* mpstat (Global Average Activities by All CPUs.)
* -P ALL : (Indicate Processor Number)
* -I : print total number of interrupt statistics about per processor.)
* -A = -u -I ALL -p ALL) : display all information)text/html2023-10-21T19:19:05+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:systemd_vs_sysvinit
https://wiki.20dage.dk/doku.php?id=linux_og_unix:systemd_vs_sysvinit&rev=1697915945&do=diff
Tilbage til Sysadm
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Systemd vs. SysV init
* Understanding and using Systemd
* Rethinking PID 1
* 10 things I love about systemd
* systemd.timers instead of a personal crontab
Service Related Commands
Comments SysV Systemd Start en service service <navn> start systemctl start <navn>.service Stop en service service <navn> stop systemctl stop <navn>.servicetext/html2023-10-21T19:19:04+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:terminal
https://wiki.20dage.dk/doku.php?id=linux_og_unix:terminal&rev=1697915944&do=diff
Tilbage til Linux og Unix
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Terminal tips
* Record terminal session
* Stop parsing ls
* Terminal mux
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Sådan kan man starte en simpel web-server vha. Python modulet SimpleHTTPServer:
python -m SimpleHTTPServer 8000text/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:video_redigering
https://wiki.20dage.dk/doku.php?id=linux_og_unix:video_redigering&rev=1697915943&do=diff
Tilbage til Linux og Unix
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Video redigering
Sæt to videoer sammen:
mpgjoin s01.mpg s02.mpg -o all.mpg
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Cut en video:
mpgjoin all.mpg [2:22-54:46] -o just.mpg
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DR-HD optagelse til avi:
mencoder -ovc lavc -oac copy -o test.avi test.tstext/html2024-09-11T20:37:29+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:vim
https://wiki.20dage.dk/doku.php?id=linux_og_unix:vim&rev=1726087049&do=diff
Tilbage til Linux og Unix
VIM
* VIM Koans
Indent en masse filer
for file in *.c; do
nvim -u /tmp/minimal.vim -c "normal gg=G" -c "wq" "$file"
done
med /tmp/minimal.vim
set nocompatible
filetype plugin indent on
syntax on
Min .vimrc siger p.t. sådan her ud:
syntax enable
map! ¤ ansible.builtin.
filetype plugin indent on
set tabstop=2
set shiftwidth=2
set autoindent
set expandtab
set hlsearch
set incsearch
set mouse=a
set nobackup
set nocompatible
set noerrorbells
set noswapfi…text/html2023-10-21T19:19:03+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:virtualbox
https://wiki.20dage.dk/doku.php?id=linux_og_unix:virtualbox&rev=1697915943&do=diff
VirtualBox information
* NetBSD
Installation af NetBSD under VirtualBox skaber problemer, men det kan løses
ved at skrive i en CLI:
vboxsdl --norawr0 --startvm NetBSD
* FreeDos
Da Dos og dermed FreeDos ikke fortæller CPU'en at, der ikke er noget af lave, så
er det en meget god idé at sætte entext/html2023-10-21T19:19:01+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:x
https://wiki.20dage.dk/doku.php?id=linux_og_unix:x&rev=1697915941&do=diff
Tilbage til Linux og Unix
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X
* xorg.conftext/html2023-10-21T19:19:02+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:xorg.conf
https://wiki.20dage.dk/doku.php?id=linux_og_unix:xorg.conf&rev=1697915942&do=diff
xorg.conf
Grunde til at skulle kunne redigere xorg.conf (fra mailinglist)
1) have a tablet work;
2) have a blacklisted Synaptics touchpad work;
3) have some AGP graphics cards run in 4x mode instead of the default 1x mode;
4) enable some extensions that were not enabled by default, like DRI2, EXA, XRANDR, or disable some that did not oexist peacefully with some other (text/html2023-10-21T19:19:01+00:00Anonymous (anonymous@undisclosed.example.com)linux_og_unix:zandronum
https://wiki.20dage.dk/doku.php?id=linux_og_unix:zandronum&rev=1697915941&do=diff
Zandronum
* Zandronum homepage
$ sudo apt-add-repository 'deb <http://debian.drdteam.org/> stable multiverse'
$ wget -O - <http://debian.drdteam.org/drdteam.gpg> | sudo apt-key add -
$ sudo apt-get update
$ sudo apt-get install zandronum doomseeker-zandronum
Install IWADs to ~/.zandronum/