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Tibbo Project System (TPS)
© Tibbo Technology Inc.
Running
journalctl
will present every entry in the journal, starting with the oldest
entries. You can scroll through the entries with the Page Up and Page Down keys,
and exit by pressing Q.
If you would like to see only the journal entries for the current boot, run
journalctl -
b
.
To see journal entries for specific time frames, you can use the --
since
and/or --
until
options. These options must be followed by either relative values — yesterday,
today, tomorrow, or now — or absolute time values, which take the format "YYYY-
MM-DD HH:MM:SS" and must include the quotes. For example, running
journalctl --
since "2020-07-21 12:00:00"
would display all journal entries recorded since noon on
June 21, 2020.
Perhaps the most useful way of filtering the journal is by unit, or services being run
on the system. For example, running
journalctl -u ag_server
would display all journal
entries related to AggreGate Server events.
Finally, this utility can be used to monitor the journal and display entries as they are
created in real time by running
journalctl -f
. To stop following, press Ctrl+C.
For more details about
journalctl
,
Monitoring system load
The default CLI utility to monitor system load on most Linux distributions is
top
. This
interactive tool displays near-real-time information about CPU and RAM usage, as
well as active processes and how much CPU time they are consuming, among other
data. To exit the utility, press Ctrl+C.
Information on using the powerful interactive features of
top
is easily found online.
Checking disk space
To see the size and usage of all media mounted on the system, you can run
df
to
display the information in 1K blocks. If you would prefer output in units more
commonly used on a daily basis, run
df -h
to display the information in kilobytes (K),
megabytes (M), and gigabytes (G).
The partition most likely to be of interest will be mounted on root (i.e., "/").
Managing networking functionality
The powerful iproute2 collection of utilities is available on Tibbo devices running
Linux. This software package replaces several legacy tools for controlling and
managing a wide range of aspects of networking in a Linux system.
The most commonly used utility in the collection is
ip
, which is used to query and
configure the system's networking settings, including IP address, link configuration,
routing tables, and tunnels. One of the most common use cases is getting a network
adapter's IP address, which is accomplished by running
ip address show
.
For more information on all of the functionality provided by iproute2,
.
External Controllers
The following external controllers and controller families are currently being offered
by Tibbo:
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