cisco switch helpful commands
by
zemerdon »
Sun Oct 05, 2025 4:17 pm
» in
Cisco
backup config tftp
copy running-config tftp:
cisco show ip
show ip int
console connect
sudo screen /dev/ttyUSB0 9600
remove stack members...
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Last post by zemerdon
Sun Oct 05, 2025 4:17 pm
helpful linux commands
Replies: 1
by
zemerdon »
Sat Jun 21, 2025 5:45 am
netstat dont list unix sockets
netstat -na --inet --inet6
find processes using mount point
sudo fuser -mv /mount/point
watch with pipe...
1 Replies
76734 Views
Last post by zemerdon
Tue Dec 09, 2025 4:15 pm
create 1TB bzip2 split archives
by
zemerdon »
Mon Mar 30, 2026 3:41 pm
Compress
tar -cf - /zfs-raidz1/zoneminder/ | pv | zstd -T0 | split -b 100G -d - zoneminder_archive.tar.zst_
tar -cf - /zfs-raidz1/zoneminder/...
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Last post by zemerdon
Mon Mar 30, 2026 3:41 pm
debian coral TPU
by
zemerdon »
Mon Mar 16, 2026 7:29 pm
DISABLE SECURE BOOT BEFORE ANYTHING
echo deb coral-edgetpu-stable main | sudo tee /etc/apt/sources.list.d/coral-edgetpu.list
curl | sudo apt-key...
0 Replies
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Last post by zemerdon
Mon Mar 16, 2026 7:29 pm
weston amber
by
zemerdon »
Tue Feb 24, 2026 3:37 pm
install weston
sudo apt install weston -y
install waydroid
sudo apt install curl ca-certificates -y
curl -s | sudo bash
sudo apt install waydroid...
0 Replies
4280 Views
Last post by zemerdon
Tue Feb 24, 2026 3:37 pm
google-chrome-stable seg fault
by
zemerdon »
Thu Feb 19, 2026 5:11 pm
zemerdon@laptop:~/.config$ google-chrome-stable
Check failed: . : Permission denied (13)
Trace/breakpoint trap (core dumped)
audit: type=1400...
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Last post by zemerdon
Thu Feb 19, 2026 5:11 pm
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Last post by zemerdon
Thu Feb 05, 2026 11:25 am
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Last post by zemerdon
Sun Jan 25, 2026 10:55 am
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Last post by zemerdon
Thu Oct 23, 2025 4:34 pm
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Last post by zemerdon
Mon Aug 04, 2025 11:49 pm
reset mysql root password
by
zemerdon »
Wed Jul 30, 2025 4:19 pm
stop mysqld
systemctl stop mysqld
edit mysqld conf
sudo nano /etc/mysql/my.cnf
append to the conf
# For debugging and recovery only #...
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Last post by zemerdon
Wed Jul 30, 2025 4:19 pm
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Last post by zemerdon
Thu Jul 24, 2025 2:28 pm
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5687 Views
Last post by zemerdon
Thu Jul 24, 2025 1:34 pm
fstab stopped mounting
by
zemerdon »
Mon Jul 21, 2025 6:02 pm
fstab trying to mount before interface up.
enable the following service.
systemctl enable systemd-networkd-wait-online
fstab now mounts when...
0 Replies
4652 Views
Last post by zemerdon
Mon Jul 21, 2025 6:02 pm
1 Replies
23805 Views
Last post by zemerdon
Sat Jul 05, 2025 4:38 pm
fix rsyslog permissions
by
zemerdon »
Wed Jun 25, 2025 6:08 pm
ERROR
Jun 25 07:56:59 syslog rsyslogd : error during config processing: omfile: creating parent directories for file...
0 Replies
5046 Views
Last post by zemerdon
Wed Jun 25, 2025 6:08 pm
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Last post by zemerdon
Tue Jan 21, 2025 5:24 pm
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Last post by zemerdon
Tue Jan 21, 2025 12:41 pm
find what process using what ip
by
zemerdon »
Sat Jul 20, 2024 11:22 am
You can run lsof -n|grep TCP to know which programs are connecting to which IPs.
watch lsof -n|grep -e TCP -e UDP |grep -v -e apache2 -e mariadb |...
0 Replies
28211 Views
Last post by zemerdon
Sat Jul 20, 2024 11:22 am
allow sudo commands without sudo
by
zemerdon »
Sat Apr 06, 2024 10:57 pm
edit /etc/sudoers file
zemerdon ALL=NOPASSWD: /usr/sbin/hddtemp, /usr/sbin/nvme
retain sudo on everything but only allow apt without password....
0 Replies
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Last post by zemerdon
Sat Apr 06, 2024 10:57 pm
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Last post by zemerdon
Sat Apr 06, 2024 10:31 pm
apt accept release change
by
zemerdon »
Fri Mar 22, 2024 10:24 pm
E: Repository ' stable InRelease' changed its 'Codename' value from 'unifi-8.0' to 'unifi-8.1'
sudo apt-get update --allow-releaseinfo-change
0 Replies
25449 Views
Last post by zemerdon
Fri Mar 22, 2024 10:24 pm
change file metadata
by
zemerdon »
Thu Mar 07, 2024 10:04 pm
exiftool -GPSLongitude= $longitude -GPSLatitude= $latitude *.png
Your basic command would be (no plus signs, those aren't used with Coordinates)...
0 Replies
26427 Views
Last post by zemerdon
Thu Mar 07, 2024 10:04 pm
PMM2 remove node
by
zemerdon »
Sun Mar 03, 2024 6:46 pm
from any node console:
zemerdon@NAS:~$ pmm-admin inventory list nodes
Nodes list.
Node type Node name Address Node ID
GENERIC_NODE NAS...
0 Replies
26236 Views
Last post by zemerdon
Sun Mar 03, 2024 6:46 pm
0 Replies
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Last post by zemerdon
Wed Feb 07, 2024 5:04 pm
convert mkv to mp4
by
zemerdon »
Mon Feb 05, 2024 1:46 pm
Converting mkv to mp4 with ffmpeg
Essentially just copy the existing video and audio stream as is into a new container, no funny business!
The...
0 Replies
27877 Views
Last post by zemerdon
Mon Feb 05, 2024 1:46 pm
0 Replies
28147 Views
Last post by zemerdon
Sat Feb 03, 2024 5:22 pm
resize qcow
by
zemerdon »
Sat Feb 03, 2024 12:33 pm
Expanding a disk virtual size using qemu-img
Above we saw how to reclaim unused space from a qcow2 disk image using the virt-sparsify command. In...
0 Replies
27831 Views
Last post by zemerdon
Sat Feb 03, 2024 12:33 pm
rsyslog custom logging
by
zemerdon »
Sun Jan 14, 2024 4:06 pm
The solution is to use custom rsyslog templates. First you create the log message template. The following template resembles the default syslog...
0 Replies
24197 Views
Last post by zemerdon
Sun Jan 14, 2024 4:06 pm
0 Replies
23197 Views
Last post by zemerdon
Fri Jan 05, 2024 11:42 am
0 Replies
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Last post by zemerdon
Fri Jan 05, 2024 9:09 am
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23655 Views
Last post by zemerdon
Mon Jan 01, 2024 10:35 am
0 Replies
23805 Views
Last post by zemerdon
Sun Dec 31, 2023 11:45 pm
0 Replies
24192 Views
Last post by zemerdon
Fri Dec 29, 2023 2:21 pm
compare two directories CLI
by
zemerdon »
Fri Dec 29, 2023 2:00 pm
root@server:/media/network# diff /media/12tb_media/MOVIES/MOVIES\ A-M/ /media/network/192.168.1.10/plex/MOVIES/MOVIES\ A-M/ | grep -v Common
Only...
0 Replies
23051 Views
Last post by zemerdon
Fri Dec 29, 2023 2:00 pm
HDD break-in/testing
by
zemerdon »
Wed Dec 20, 2023 8:32 am
I'm about to get a couple brand new HGST DeskStar 4TB 3.5 SATA hard drives. Are there any recommended practices these days I should perform before I...
0 Replies
23992 Views
Last post by zemerdon
Wed Dec 20, 2023 8:32 am
0 Replies
22946 Views
Last post by zemerdon
Sun Oct 15, 2023 8:17 am
search text and show source file(s)
by
zemerdon »
Fri Sep 22, 2023 2:18 pm
/usr/local/share/suricata/rules: grep -nr 2270000 *
dnp3-events.rules:3:# This SIDs fall in the 2270000+ range. See:
dnp3-events.rules:8:...
0 Replies
23636 Views
Last post by zemerdon
Fri Sep 22, 2023 2:18 pm
0 Replies
23187 Views
Last post by zemerdon
Sun Sep 17, 2023 10:51 am
MySQL create superuser
by
zemerdon »
Fri Sep 15, 2023 3:06 pm
Create root user in Mysql
How to create a superuser in MySQL?
CREATE USER 'username'@'localhost' IDENTIFIED BY 'the_password';
GRANT ALL...
0 Replies
23308 Views
Last post by zemerdon
Fri Sep 15, 2023 3:06 pm
0 Replies
25688 Views
Last post by zemerdon
Wed Sep 13, 2023 3:14 pm
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25476 Views
Last post by zemerdon
Thu Aug 31, 2023 9:18 pm
IOMMU group handling
by
zemerdon »
Sat Aug 26, 2023 4:19 pm
find all groups
for d in $(find /sys/kernel/iommu_groups/ -type l | sort -n -k5 -t/); do n=${d#*/iommu_groups/*}; n=${n%%/*}; printf 'IOMMU Group %s...
0 Replies
24730 Views
Last post by zemerdon
Sat Aug 26, 2023 4:19 pm
delay QEMU/KVM VM
by
zemerdon »
Sun Jul 23, 2023 10:18 am
Delayed start for Guests KVM/libvirt
root@NAS:/home/zemerdon# locate libvirt-guests
/etc/default/libvirt-guests...
0 Replies
25162 Views
Last post by zemerdon
Sun Jul 23, 2023 10:18 am
copy but don't overwrite
by
zemerdon »
Wed May 31, 2023 1:50 pm
This is also achievable using cp. See here:
sudo cp -vnpr /xxx/* /yyy
xxx = source
yyy = destination
v = verbose
n = no clobber (no overwrite)...
0 Replies
24583 Views
Last post by zemerdon
Wed May 31, 2023 1:50 pm
how linux permissions work
by
zemerdon »
Sat May 27, 2023 10:38 am
74
fmask and dmask are mount options for the FAT filesystem, based on fstab.
They are used to define permissions (umask sets them to both files...
0 Replies
25173 Views
Last post by zemerdon
Sat May 27, 2023 10:38 am
yt-dlp formats
by
zemerdon »
Wed May 24, 2023 9:23 pm
best format without webm
root@NAS:/home/yt-dlp/yt-dlp-master# ./yt-dlp.sh -S res,ext:mp4:m4a --recode mp4
sorting formats
format codes
0 Replies
29697 Views
Last post by zemerdon
Wed May 24, 2023 9:23 pm
find computer bus speeds
by
zemerdon »
Wed May 24, 2023 7:05 pm
run command lspci -nv and search within it
we could run command dmidecode and search within it for our bus address, in this case 04:00.0
0 Replies
25632 Views
Last post by zemerdon
Wed May 24, 2023 7:05 pm
find what process is using what port
by
zemerdon »
Tue Apr 18, 2023 7:45 pm
root@VPN:/home/zemerdon# fuser 514/tcp
514/tcp: 5306
root@VPN:/home/zemerdon# lsof -i :514
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME...
0 Replies
25466 Views
Last post by zemerdon
Tue Apr 18, 2023 7:45 pm
set IP CLI
by
zemerdon »
Sat Apr 08, 2023 3:57 pm
As a network administrator, you are probably managing various Linux machines over different subnets of your company infrastructure.
As network...
0 Replies
25532 Views
Last post by zemerdon
Sat Apr 08, 2023 3:57 pm
setup x11vnc
by
zemerdon »
Fri Apr 07, 2023 8:48 pm
x11vnc.sh
#!/bin/bash
x11vnc -reopen -forever -loop -rfbauth /home/zemerdon/.vnc/passwd
create x11vnc rfbauth file 'x11vnc -storepasswd'
0 Replies
25123 Views
Last post by zemerdon
Fri Apr 07, 2023 8:48 pm
setup SAMBA
by
zemerdon »
Tue Apr 04, 2023 4:36 pm
add user locally FIRST
adduser username
add user to samba
smbpasswd -a username
/etc/samba/smb.conf
interfaces = 192.168.1.199/24 wlp4s0...
0 Replies
24204 Views
Last post by zemerdon
Tue Apr 04, 2023 4:36 pm
0 Replies
25603 Views
Last post by zemerdon
Mon Apr 03, 2023 1:16 am
wifi signal diagnose
by
zemerdon »
Mon Apr 03, 2023 1:14 am
AIROCRACK-NG
diagnose wifi signals for network topology planning.
airmon-ng check kill
airmon-ng start wlo1
airodump-ng --band abg wlo1mon
0 Replies
24966 Views
Last post by zemerdon
Mon Apr 03, 2023 1:14 am
0 Replies
25144 Views
Last post by zemerdon
Sun Mar 19, 2023 10:03 pm
resize QEMU/KVM qcow2 file
by
zemerdon »
Sun Mar 12, 2023 2:07 pm
Resizing KVM qcow2 images
While expanding qcow2 images is easy, finding an easy way to shrink them was not.
Recently, my Matrix VM ran out of disk...
0 Replies
25188 Views
Last post by zemerdon
Sun Mar 12, 2023 2:07 pm
phpMyadmin root login [SOLVED]
by
zemerdon »
Sun Feb 26, 2023 8:36 am
I encountered a similar problem in Ubuntu 14.04 using MariaDB. Instead of trying to change everything I just created a new user.
mysql -u root -p...
0 Replies
25361 Views
Last post by zemerdon
Sun Feb 26, 2023 8:36 am
OpenVPN CLi config
by
zemerdon »
Mon Feb 06, 2023 8:15 am
incase interfaces go south use cli to change conf.
root@NAS:/home/zemerdon# sacli ConfigQuery
sacli --key admin_ui.https.ip_address --value ens4f0...
0 Replies
26933 Views
Last post by zemerdon
Mon Feb 06, 2023 8:15 am
custom SSH login
by
zemerdon »
Mon Jan 23, 2023 8:23 pm
chmod +x 01-custom
zemerdon@nvr:~$ cat /etc/update-motd.d/01-custom
#!/bin/sh
echo GENERAL SYSTEM INFORMATION
#/usr/bin/screenfetch...
0 Replies
26084 Views
Last post by zemerdon
Mon Jan 23, 2023 8:23 pm
0 Replies
26310 Views
Last post by zemerdon
Mon Jan 23, 2023 8:22 pm
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