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        <title>Wissen - linux</title>
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            <title>Wissen</title>
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        <item>
            <title>bridge</title>
            <link>https://heins.one/wiki/doku.php?id=linux:bridge&amp;rev=1606404471&amp;do=diff</link>
            <description>Bridge

	*  &lt;https://unix.stackexchange.com/questions/255484/how-can-i-bridge-two-interfaces-with-ip-iproute2&gt;

eine Bridge erstellen:
ip link add name br0 type bridge
ip link set dev br0 up
zwei NICs (eth0 und eth1) an die Bridge heften/binden:
ip link set dev eth0 master br0
ip link set dev eth1 master br0
zeigen, was drin steckt:
bridge fdb show br br0</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Thu, 26 Nov 2020 15:27:51 +0000</pubDate>
        </item>
        <item>
            <title>date_linux</title>
            <link>https://heins.one/wiki/doku.php?id=linux:date_linux&amp;rev=1645609856&amp;do=diff</link>
            <description>date

Datum und Uhrzeit anzeigen:
&gt; date
Fr 27. Nov 21:24:15 CET 2020
Datum und Uhrzeit im Europäischen Format anzeigen:
&gt; date +&quot;%Y-%m-%d %H:%M:%S&quot;
&gt; date +&#039;%F %T&#039;
2017-10-11 15:39:24
Wochentag als Ziffer (Montag = 1):
&gt; date +&#039;%u&#039;
1
Kalenderwoche als Ziffer (Erster Tag der Woche ist Montag):</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Wed, 23 Feb 2022 09:50:56 +0000</pubDate>
        </item>
        <item>
            <title>iptables</title>
            <link>https://heins.one/wiki/doku.php?id=linux:iptables&amp;rev=1648031279&amp;do=diff</link>
            <description>iptables

	*  &lt;https://der-linux-admin.de/2013/12/alle-iptables-regeln-entfernen/&gt;
	*  &lt;https://www.codeflow.site/de/article/how-to-list-and-delete-iptables-firewall-rules&gt;
	*  &lt;https://www.digitalocean.com/community/tutorials/how-to-list-and-delete-iptables-firewall-rules&gt;
&gt; apt install iptables-persistent
&gt; cat /etc/iptables/rules.v4
&gt; cat /etc/iptables/rules.v6
&gt; iptables -A ...
&gt; iptables-save &gt; /etc/iptables/rules.v4
Regeln anzeigen

Filter
# iptables -L -t filter
oder einfach so:
# iptable…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Wed, 23 Mar 2022 10:27:59 +0000</pubDate>
        </item>
        <item>
            <title>minecraft</title>
            <link>https://heins.one/wiki/doku.php?id=linux:minecraft&amp;rev=1608490435&amp;do=diff</link>
            <description>Minecraft

Minecraft-Server auf Ubuntu/Linux installieren

How to Make a Minecraft Server on Ubuntu, Windows and CentOS
root@minecraft:~# apt install screen vim mc net-tools tmux openjdk-11-jre-headless lib32gcc1</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sun, 20 Dec 2020 18:53:55 +0000</pubDate>
        </item>
        <item>
            <title>stat_linux</title>
            <link>https://heins.one/wiki/doku.php?id=linux:stat_linux&amp;rev=1714853994&amp;do=diff</link>
            <description>stat (Linux)

Dateigröße in Byte ausgeben (ähnlich wie ls -l):
[root@Linux ~]# stat -c &#039;%s&#039; /etc/rc0.d/K01autofs 
16[root@Linux ~]# stat -c &#039;%s %n&#039; /etc/rc0.d/K01autofs 
16 /etc/rc0.d/K01autofs[root@Linux ~]# stat -c &#039;%s %N&#039; /etc/rc0.d/K01autofs 
16 &#039;/etc/rc0.d/K01autofs&#039; -&gt; &#039;../init.d/autofs&#039;</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sat, 04 May 2024 20:19:54 +0000</pubDate>
        </item>
        <item>
            <title>tail_linux</title>
            <link>https://heins.one/wiki/doku.php?id=linux:tail_linux&amp;rev=1676641166&amp;do=diff</link>
            <description>tail (Linux)

siehe auch:

	*  &lt;https://www.problem-hilfe.de/linux/h.php/Shells/Head_Tail.html&gt;
	*  tail (FreeBSD)
	*  head

nur die letzten drei Zeilen ausgeben:
&gt; seq 0 12 | tail -3
10
11
12

&gt; seq 0 12 | tail -n-3
10
11
12
alle Zeilen ab der dritten Zeile ausgeben:
&gt; tail -n +3 daten.txt

&gt; seq 0 12 | tail -n+3
2
3
4
5
6
7
8
9
10
11
12

&gt; seq 0 12 | tail +3
2
3
4
5
6
7
8
9
10
11
12</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Fri, 17 Feb 2023 13:39:26 +0000</pubDate>
        </item>
        <item>
            <title>taskset</title>
            <link>https://heins.one/wiki/doku.php?id=linux:taskset&amp;rev=1645609794&amp;do=diff</link>
            <description>taskset

Die Nutzung der CPU-Kerne begrenzen in Linux begrenzen.

taskset manual page

so kann man in Linux (Ubuntu 20.04) einem Prozess nur eine begrenzte Anzahl an nutzbaren CPU-Kernen zuteilen:
&gt; taskset -c -p 49387
pid 49387&#039;s current affinity list: 0-43

&gt; taskset -p ffff 49387
pid 49387&#039;s current affinity mask: fffffffffff
pid 49387&#039;s new affinity mask: ffff

&gt; taskset -c -p 49387
pid 49387&#039;s current affinity list: 0-15</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Wed, 23 Feb 2022 09:49:54 +0000</pubDate>
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