A couple of possibilities are screen and minicom
screen /dev/ttyS0 19200
Or in my case (with a Keyspan USB serial adapter):
minicom is available from homebrew, ie. brew install minicom.
I've not used it for a while, and it didn't work at my first attempt – probably needs some configuration.
This is in the docs, so this is more of a convenience reminder than anything else:
config system interface
set interface internal1
set type vlan
set vlanid 20
set ip 172.31.20.0/24
set allowaccess https ssh ping
This is an useful summary:
It's written for illumos/solaris/smartos users but most of the tools are also available on linux.
When I began using puppet, I quickly realised that configuration data was best kept separate from puppet manifests. Initially, I used extlookup and kept configuration data in CSV files. Then complex data structures came to puppet and I now use hirea/hiera-puppet with configuration data stored in hierarchical YAML files (other hiera backends are available). This article describes how to define in YAML the resources that should be applied to a node.
The default application for bittorrent files appears to be Transmission in Fedora 17. I prefer Azureus, but there is no obvious way to set Azureus as the default app.
I googled a little and came up with this:
# echo "application/x-bittorrent=fedora-Azureus.desktop" >> /usr/share/applications/defaults.list
I often hit problems cloning git repos from github, and end up googling the answer.
This is the solution I use most often. Thanks Eric!
OpenNMS ships with the thresholds for some events already defined. For example, there is a memory threshold defined as:
<group name="netsnmp-memory-nonlinux" rrdRepository="/opt/opennms/share/rrd/snmp/">
<expression type="low" expression="memAvailReal / memTotalReal * 100.0" ds-type="node" ds-label="" value="5.0" rearm="10.0" trigger="2"/>
ie. if free memory drops below 5% then an event will be created. The alert will be cancelled automatically if free memory subsequently rises above 10%
I wanted to configure some specific nodes with a different threshold, eg. generate an event when free memory drops below 2.5%.
Here's what I did.
I had a utility server running RHEL 6.2 (I installed it as part of a RHEV evaluation process). However, I have no RHEL entitlements so am not able to get updates.
So, I converted it to CentOS 6.2, with a little help from this post:
yum clean all
rpm --import RPM-GPG-KEY-CentOS-6
rpm -e --nodeps redhat-release-server
rpm -e yum-rhn-plugin rhn-check rhnsd rhn-setup
rpm -Uhv --force *.rpm
I was pleased to read this link on the excellent MySQL Performance Blog.