https://wiki.kitsnet.us/w/api.php?action=feedcontributions&feedformat=atom&user=192.168.15.53 2026-10-07T06:07:27Z User contributions MediaWiki 1.43.9 https://wiki.kitsnet.us/w/index.php?title=Linux:Tips_and_Tricks&diff=681 2022-12-30T19:03:17Z

<p>192.168.15.53: /* Find files modified in past N days */</p> <hr /> <div>===== Find files modified in past N days =====<br /> &lt;code&gt;find ''path'' -mtime -''N'' -ls&lt;/code&gt;&lt;syntaxhighlight lang=&quot;shell-session&quot;&gt;<br /> [psmode@wort ~]$ find /kvm/ -mtime -3 -ls<br /> 102090127 4 drwxr-xr-x 7 root root 4096 Jan 3 09:46 /kvm/<br /> 2038539 4 drwxr-xr-x 2 root kitsnet_adm 4096 Jan 3 09:13 /kvm/socat-kvm<br /> 2038573 4 -rw-r--r-- 1 root root 5 Jan 3 09:13 /kvm/socat-kvm/uv040<br /> 101237691 8 -rw-r--r-- 1 root kitsnet_adm 6370 Jan 3 09:46 /kvm/uv034.xml<br /> 102163845 12 -rw-r--r-- 1 root root 9096 Jan 3 09:46 /kvm/uv039.xml<br /> 102090129 12 -rw-r--r-- 1 root root 8303 Jan 3 09:46 /kvm/uv040.xml<br /> &lt;/syntaxhighlight&gt;<br /> <br /> ===== Shell script debugging modes =====<br /> A good explanation of the debugging modes is given by [https://www.tecmint.com/enable-shell-debug-mode-linux/ How To Enable Shell Script Debugging Mode in Linux]. Basically, there are three modes<br /> <br /> * &lt;code&gt;-v&lt;/code&gt; (short for verbose) – tells the shell to show all lines in a script while they are read, it activates verbose mode.<br /> * &lt;code&gt;-n&lt;/code&gt; (short for noexec or no ecxecution) – instructs the shell read all the commands, however doesn’t execute them. This options activates syntax checking mode.<br /> * &lt;code&gt;-x&lt;/code&gt; (short for xtrace or execution trace) – tells the shell to display all commands and their arguments on the terminal while they are executed. This option enables shell tracing mode.<br /> <br /> Which may be invoked by any of three different ways:<br /> <br /> # Modifying the first line of a shell script: &lt;code&gt;#!/bin/sh ''option(s)''&lt;/code&gt;<br /> # Invoking shell with debugging options: &lt;code&gt;$ /bin/bash ''option(s)'' ''script_name'' ''argument1 ... argumentN''&lt;/code&gt;   <br /> # Using set shell built-in command in the middle of the script: &lt;code&gt;$ set -''option''&lt;/code&gt; to enable or &lt;code&gt;$ set +''option''&lt;/code&gt; to disable<br /> <br /> ==== Network Diagnostics ====<br /> &lt;syntaxhighlight lang=&quot;shell-session&quot;&gt;<br /> # ip a<br /> # ip l<br /> # ip r<br /> # ip -6 r<br /> # firewall-cmd --list-all --zone=... (replace ... with whatever zones you are working with)<br /> # nmcli c s<br /> # nmcli d s<br /> # nmcli c s ppp0<br /> # nmcli c s enp2s0<br /> # nmcli c s enp3s0<br /> # sysctl -a | grep -E 'forwarding'<br /> &lt;/syntaxhighlight&gt;</div>

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