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Linux Crontab nützen

       
editieren crontab -e    
speicher      
Service starten service cron reload    
Cron Kontrolle       
  crontab -l    
       
       
  tail -f /var/log/syslog | grep CRON    
       
  # touch /etc/cron.allow    
       
       
  >/dev/null 2>&1    




 

 



MAILTO="nameThis email address is being protected from spambots. You need JavaScript enabled to view it.;
3 * * * * apt-get -s -qq dist-upgrade /dev/null 2>&1





  crontab1


Source/Quellen:
- Linux Crontab: 15 Awesome Cron Job Examples
- askubuntu.com | why-crontab-scripts-are-not-working
- crontab.guru/
- help.ubuntu.com | CronHowto 
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find / -name dhcpd.conf
or
find / -xdev -name dhcpd.conf

vi /etc/dhcp/dhcpd.conf

 

 

find / -name dhcpd.leases
or
find / -xdev -name dhcpd.leases
cat /var/lib/dhcp/dhcpd.leases

 

 /etc/init.d/isc-dhcp-server restart


 

 


Quellen/Source:

- Linux Magazine Network Nirvana

- What is DHCP and how to configure DHCP server in Linux

- Debian de DHCP_Server

DHCP Server Configuration

- Red Hat Enterprise Linux 3: System Administration Guide | Chapter 25. Dynamic Host Configuration Protocol (DHCP)

- Ubuntu | Dynamic Host Configuration Protocol (DHCP)

- LinugConfig.org | What is DHCP and how to configure DHCP server in Linux

- some information about classes

class and pool

 

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wie kann man die funktionsweise oder errormeldung eines DNS Server/Dienst kontrollieren:

dig @localhost deinedomain.tld
 
Fehler zum DNS Server findest Du so:

grep named /var/log/syslog
 
mit dem Befehle
ls -g  /etc/bind/
können die erstellen/vorhandenen Zonen files gelistet werden und dann mit vi editiert werden
vi /etc/bind/pri.example.com
 
Wenn ein restart von Bind nötig ist dann
sudo /etc/init.d/bind9 restart
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