Category Archives: Linux

Stuff about Linux

bash: Redirect all STDIN to a file

Hi,

to simply redirect all incoming input from STDIN to a file you can use less.
Continue reading bash: Redirect all STDIN to a file

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Network: Forwarding SNMP Traps by mail with snmptrapd and snmptt

Hi,

this post describes a simply way to forward all traps by E-Mail received via SNMP.

This process is splited in several steps

  • Receive the traps => snmptrapd
  • snmptrapd calls the trapshandler script after each received trap. The trap details are handed over to the script by STDIN
  • The trap handler is /usr/sbin/snmptthandler. This script spools all traps to /var/spool/snmptt
  • The snmptt gets the traps from the spool folder, translate them in a human readable format and calls a custum script defined by snmptt.conf

Continue reading Network: Forwarding SNMP Traps by mail with snmptrapd and snmptt

Linux: Switch keyboard layout in (bash) shell

Hi,

linux allows to change the keybaord layout “on the fly”.
Continue reading Linux: Switch keyboard layout in (bash) shell

rsyslog: Configure TLS/SSL

Hi,

to setup a remote syslog server TLS encryption is strongly recommended.

Continue reading rsyslog: Configure TLS/SSL

Debian: Enable apt debug logging

Hi,

for troubleshooting purposes (i.e. certificate issues) it is sometimes to enable the debug logging of apt.
Continue reading Debian: Enable apt debug logging