bootloader

Anonymous (anonymous@undisclosed.example.com) — 2021-08-01T17:51:33+0800

Bootloader STM32

btrfs

Anonymous (anonymous@undisclosed.example.com) — 2023-06-11T01:10:32+0800

Btrfs Snapshot btrfs send /mnt/btr_backup/data.20150101 | btrfs receive /mnt/btr_pool/ btrfs subvolume snapshot /mnt/btr_pool/data.20150101 /mnt/btr_pool/data btrfs subvolume delete /mnt/btr_pool/data.20150101 Scrub btrfs scrub start / Find files with csum error

clonezilla

Anonymous (anonymous@undisclosed.example.com) — 2023-02-28T16:45:51+0800

Clonezilla Prepare USB Boot Drive * Format USB drive to FAT32 format with MBR record * Extrace zip and copy all content to the USB

curl

Anonymous (anonymous@undisclosed.example.com) — 2017-11-04T21:54:38+0800

cURL

data_recovery

Anonymous (anonymous@undisclosed.example.com) — 2016-12-03T20:05:44+0800

data recovery software * rusolut * Flash Extractor

date

Anonymous (anonymous@undisclosed.example.com) — 2016-10-23T00:04:56+0800

Yesterday Linux $ date -d "yesterday" Wed Dec 14 21:38:02 CET 2011 $ date -d "last day" Wed Dec 14 21:38:03 CET 2011 $ date -d "-1 day" Wed Dec 14 21:38:05 CET 2011 OpenBSD $ date -r `expr $(date +%s) - 86400` Wed Dec 14 22:15:09 CET 2011 FreeBSD

dd

Anonymous (anonymous@undisclosed.example.com) — 2017-11-27T02:51:20+0800

DD USB boot device dd bs=4M if=xxx.img/iso of=/dev/sdX status=progress && sync Rescue ddrescue -d -r2 /dev/sdX disk.img disk.logfile

diff

Anonymous (anonymous@undisclosed.example.com) — 2016-12-23T00:16:37+0800

compare two directory /bin/diff -bur folder1/ folder2/

dig

Anonymous (anonymous@undisclosed.example.com) — 2016-09-22T15:49:59+0800

zone transfer dig axfr example.com @example.com nsupdate server example.com update add archlinux.example.com 80000 IN A 66.211.214.131 send

disk_utils

Anonymous (anonymous@undisclosed.example.com) — 2018-12-29T00:28:51+0800

Utils Safely unplug unmount mount-point echo 1 | sudo tee /sys/block/sdX/device/delete Change UUID tune2fs /dev/sdX -u {uuid} cryptsetup luksUUID /dev/sdX0 --uuid {uuid} # bsd gpart list geom disk list camcontrol devlist # linux lsblk Find device type

emacs

Anonymous (anonymous@undisclosed.example.com) — 2017-01-13T00:26:36+0800

Spacemacs Movement * Up k C-p * Down j C-n * Right h * Left l Nerd Tree * File tree SPC f t * Project tree SPC p t * Refresh SPC g r Search Text * Search in current file SPC s s * Search in current level directory (grep) SPC s g g

ffmpeg

Anonymous (anonymous@undisclosed.example.com) — 2017-05-11T00:31:49+0800

ffmpeg convert mov to mp4 ffmpeg -i movie.mov -vcodec copy -acodec cop out.mp4 convert a set of jpeg to mp4 ffmpeg -framerate 30 -i image-%05d.jpg -c:v libx264 -profile:v high -crf 20 -pix_fmt yuv420p output.mp4 If you images are like this:

find

Anonymous (anonymous@undisclosed.example.com) — 2017-10-17T19:47:02+0800

To find the most recently modified files, sorted in the reverse order of update time (i.e., the most recently updated files first): $ find /etc -type f -printf '%TY-%Tm-%Td %TT %p\n' | sort -r 2012-09-14 22:25:14.0000000000 /etc/shadow 2012-08-17 00:56:36.0000000000 /etc/resolv.conf 2012-08-16 23:22:57.0000000000 /etc/ld.so.cache 2012-08-16 23:22:29.0000000000 /etc/mtab 2012-08-16 23:22:04.0000000000 /etc/network/run/ifsta…

font

Anonymous (anonymous@undisclosed.example.com) — 2017-08-03T15:50:17+0800

Custom font (per user) * copy font to ~/.fonts * fc-cache -fv

freebsd

Anonymous (anonymous@undisclosed.example.com) — 2017-10-04T23:23:10+0800

快速轉換指令對於 Linux 使用者解決 delete key 變 ~ 在 .cshrc 中加入以下 bindkey "＼e[3~" delete-char 相關設定可以參考 VT100 reverse search 在 .cshrc 中加入以下 bindkey "^R" i-search-back checkout src

galera

Anonymous (anonymous@undisclosed.example.com) — 2018-06-05T03:15:21+0800

SET GLOBAL wsrep_provider_options=“pc.bootstrap=1”; systemctl start mysql --wsrep-new-cluster SHOW STATUS LIKE 'wsrep_%'; (10.1)

gcc

Anonymous (anonymous@undisclosed.example.com) — 2017-11-12T23:02:13+0800

GCC Compile g++ mylib1.cpp g++ mylib2.cpp # shared g++ -shared -fPIC -o libmylib.so mylib1.o mylib2.o g++ -o main main.cpp libmylib.so LD_LIBRARY_PATH=. ./main # static ar rcs libmylib.a mylib1.o mylib2.o g++ -o main main.cpp -L. lmylib ./main # prevents linking with the shared libraries g++ -static -o main main.cpp -L. lmylib

git

Anonymous (anonymous@undisclosed.example.com) — 2018-02-27T04:29:26+0800

Git Bare Convert existing git repo to bare repo mkdir repo.git mv repo/.git repo.git rm -rf repo cd repo.git git config --bool core.bare true Archive # local git archive --format zip --output /path master # remote # path is optional git archive --format=tar \ --remote=ssh://remote_server/remote_repository master path1/ path2/ | tar -xv

gnuplot

Anonymous (anonymous@undisclosed.example.com) — 2017-01-23T05:04:30+0800

gnuplot wait for key to exit pause -1 point style

go

Anonymous (anonymous@undisclosed.example.com) — 2016-12-04T23:16:08+0800

Cross compile From linux to windows Make sure the toolchain for windows is installed. sudo pacman -S mingw-w64-gcc 32bit CGO_ENABLED=1 CC=i686-w64-mingw32-gcc GOOS=windows GOARCH=386 go build -o gorvp.exe main.go 64bit CGO_ENABLED=1 CC=x86_64-w64-mingw32-gcc GOOS=windows GOARCH=amd64 go build -o gorvp.exe main.go

gpg

Anonymous (anonymous@undisclosed.example.com) — 2018-10-15T22:04:34+0800

GPG Add Alias $ gpg --edit-key gpg> adduid Real Name: Email address: Comment: Change (N)ame, (C)omment, (E)mail or (O)kay/(Q)uit? O Enter passphrase: gpg> uid gpg> trust Your decision? 5 Do you really want to set this key to ultimate trust? (y/N) y gpg> save $ gpg --send-keys

haproxy

Anonymous (anonymous@undisclosed.example.com) — 2016-11-28T20:28:44+0800

FTP Load-Balanced through haproxy frontend LENS_FTP_COMMAND bind :::21 v4v6 mode tcp log global timeout client 180000 default_backend galaxy-ftp_tcp_ipvANY frontend LENS_FTP_PASV mode tcp log global timeout client 180000 bind :::10000-14000 v4v6 default_backend galaxy-ftp_tcp_ipvANY backend galaxy-ftp_tcp_ipvANY mode tcp log global timeout connect 30000 timeout server 30000 retries 3 server galaxy_ftp 10.10.50.50 check port 21 inter 10s

i3wm

Anonymous (anonymous@undisclosed.example.com) — 2017-01-14T02:44:31+0800

i3wm Get properties of a window xprop Key naming xmodmap -pke Get key code xev Reload i3-msg reload i3-msg restart

initramfs

Anonymous (anonymous@undisclosed.example.com) — 2017-12-16T21:42:02+0800

Initrmfs Extract initramfs zcat initramfs.img | cpio -id

iptables

Anonymous (anonymous@undisclosed.example.com) — 2018-09-05T00:41:12+0800

NFS Persistent iptables rules sudo apt-get install iptables-persistent Fixed port /etc/default/nfs-kernel-server #RPCMOUNTDOPTS="--manage-gids" RPCMOUNTDOPTS="--port 49639" vi /etc/iptables/rules.v4 *filter :INPUT DROP [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -i lo -j ACCEPT -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -A INPUT -m conntrack --ctstate INVALID -j DROP -A INPUT -p tcp --dport 22 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT # NFS -A IN…

ipv6

Anonymous (anonymous@undisclosed.example.com) — 2017-10-27T22:19:05+0800

IPv6 kernel parameter From version 207 and 21x, systemd only applies settings from /etc/sysctl.d/*.conf and /usr/lib/sysctl.d/*.conf. /etc/sysctl.conf /etc/sysctl.d disable IPV6 net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1

latex

Anonymous (anonymous@undisclosed.example.com) — 2016-08-30T00:44:48+0800

安裝 texlive 在 Archlinux 下 pacman -S texlive-most texlive-langchinese 如果有編譯說有 .sty 沒有找到，但此檔案的確存在於 /usr/share/texmf-dist/tex/latex/{package} 可以用 mktexlsr 更新 index，再嘗試 kpsewhich

ldap

Anonymous (anonymous@undisclosed.example.com) — 2017-06-02T19:25:21+0800

LDAP client Install sudo apt-get install libnss-ldap sudo dpkg-reconfigure ldap-auth-config /etc/pam.d/common-session session required pam_mkhomedir.so skel=/etc/skel/ optional sudo auth-client-config -t nss -p lac_ldap sudo pam-auth-update # pam password vi /etc/pam.d/common-password

linux

Anonymous (anonymous@undisclosed.example.com) — 2018-03-26T09:36:37+0800

Linux from Scrach Linux from Scrach Give sudo access to only a particular command # Make a new group, web (call it what you wish) sudo addgroup web # Add your developer(s) to the web group (use their login name). sudo usermod -a -G web your_developer(s) # Then run sudo visudo # Add in a line %web ALL=(ALL) /usr/bin/service apache2 * # The developers can then run sudo service apache2 * …

loopback

Anonymous (anonymous@undisclosed.example.com) — 2023-06-11T01:16:25+0800

Loopback Create a file and set it as a loopback device dd if=/dev/zero of=/root/cryfile bs=1M count=10 losetup /dev/loop0 /root/cryfile Delete (unmount) a loopback device losetup -d /dev/loop0

luks

Anonymous (anonymous@undisclosed.example.com) — 2023-06-11T01:17:41+0800

Cryptsetup format cryptsetup -v --cipher aes-xts-plain64 --key-size 512 --hash sha512 --iter-time 5000 --use-urandom --verify-passphrase luksFormat /dev/sdX0 Or, with default option cryptsetup luksFormat /dev/sdX0 cryptsetup luksOpen /dev/sdX0 rootfs mkfs.ext4 /dev/mapper/rootfs mount /dev/mapper/rootfs /mnt/rootfs

lvm

Anonymous (anonymous@undisclosed.example.com) — 2018-03-03T15:46:07+0800

LVM Mount LVM volume pvscan mount /dev/VolGroup00/LogVol00 /mnt Mount LVM volume with Ubuntu live CD modprobe dm-mod vgscan vgchange -a y mount /dev/VolGroup00/LogVol00 /mnt

macos

Anonymous (anonymous@undisclosed.example.com) — 2024-06-02T15:48:28+0800

Macos Software RWTS PDF printer System System Integrity Protection csrutil status Power Management pmset -b standbydelaylow 900 pmset -b standbydelayhigh 10800 pmset -b tcpkeepalive 0 pmset -g Disk Util diskutil list diskutil unmount diskutil partitionDisk /dev/disk7 MBR fat32 "P1" 100%

mail

Anonymous (anonymous@undisclosed.example.com) — 2016-10-23T00:10:37+0800

以下操作是在 FreeBSD mail 工具預設使用的發信軟體 /etc/mail/mailer.conf 發信 echo "This is a test mail." | mail -s "test mail" example@example.com 如果主機不想架設 mail server，而是使用別的 SMTP 伺服器，可以停用預設的 sendmail，改為使用 ssmtp。

mdadm

Anonymous (anonymous@undisclosed.example.com) — 2017-04-15T17:33:57+0800

mdadm RAID1 mdadm --create --verbose /dev/md0 --level=1 --raid-devices=2 /dev/sda1 dev/sdb1 cat /proc/mdstat mkfs.ext4 /dev/md0 blkid mdadm --detail --scan >> /mnt/etc/mdadm.conf # edit /etc/mdadm.conf ARRAY /dev/md0 UUID=xxxxxxxx:xxxxxxxx:xxxxxxxx:xxxxxxxx # edit /etc/fstab UUID=xxxxxxxx:xxxxxxxx:xxxxxxxx:xxxxxxxx /mnt/raid1 ext4 errors=continue 0 2 # Add mdadm hook to mkinitcpio.conf if as a boot drive # edit mkinitcpio.conf HOOKS="base udev autodetect block mdadm_udev filesystems usbinp…

mining

Anonymous (anonymous@undisclosed.example.com) — 2019-04-07T18:30:58+0800

Mining ATI Flashing atiflash supports card slot from 0 to 9. atiflash -s 0 bios0.rom # save atiflash -p 0 bios0.rom # program Fan speed wolfamdctrl -i 0 --set-fanspeed 75

mysql

Anonymous (anonymous@undisclosed.example.com) — 2019-02-19T02:06:16+0800

Install mycli mycli yaourt -S mycli Login to mysql shell mycli -u root -p Create database CREATE DATABASE newdatabase; USE newdatabase Create user and grant the database access CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'newpassword'; GRANT ALL PRIVILEGES ON newdatabase.* TO 'newuser'@'localhost';

nfs

Anonymous (anonymous@undisclosed.example.com) — 2018-02-20T11:50:03+0800

NFS Server exports create folder for exporting mkdir -p /home/nfs/public /home/nfs/private vi /etc/exports /home/nfs/public -maproot=root -network=140.116.245.193/26 /home/nfs/private -maproot=root -ro -network=140.116.245.193/26 everytime exports is edited, use

nginx

Anonymous (anonymous@undisclosed.example.com) — 2017-01-07T20:57:15+0800

Nginx listen on both v4 and v6 listen 80; listen [::]:80;

nis

Anonymous (anonymous@undisclosed.example.com) — 2017-01-12T21:11:48+0800

NIS server add to rc.conf nisdomainname="csna" nis_server_enable="YES" nis_yppasswdd_enable="YES" nis_client_enable="YES" nis_client_flags="-S csna,csna1" start yp service domainname csna service ypserv start init master cp /etc/master.passwd /var/yp/master.passwd cp /etc/group /var/yp/group cd /var/yp vi master.passwd # delete admin account vi group # delete admin group vi Makefile # comment out this line: NOPUSH = "True" make ypinit -m


Server Type: MASTER Domain: csna

Creat…



nix
Anonymous (anonymous@undisclosed.example.com) — 2017-05-28T19:12:13+0800
Nix

Select channel


nix-channel --add https://nixos.org/channels/nixpkgs-unstable
nix-channel --update


Search package


nix-env -qa PACKAGE_NAME
# or use nox, install with nix-env -iA nox
nox PACKAGE_NAME


Install package


nix-env -i PACKAGE_NAME


ntp
Anonymous (anonymous@undisclosed.example.com) — 2016-11-30T22:29:43+0800
set time


date --set="23 June 1988 10:00:00"
date --set="10:00:00"

Set the Hardware Clock to the current System Time
# hwclock --systohc

Set the System Time from the Hardware Clock.
# hwclock --hctosys


update via ntp

via ntpd


sudo service ntp stop
sudo ntpd -gq
sudo service ntp start


openssl
Anonymous (anonymous@undisclosed.example.com) — 2018-12-29T21:34:00+0800
OpenSSL

Generate a Key


openssl genrsa -out cakey.pem 4096


Generate CA


openssl req -x509 -new -nodes -key cakey.pem -days 3650 -out cacert.pem


Generate Cert key


openssl genrsa -out key.pem 4096


Generate CSR


openssl req -new -key key.pem -out csr.pem -sha256


openvpn
Anonymous (anonymous@undisclosed.example.com) — 2018-01-01T23:37:16+0800
OpenVPN

CA


pacman -S easy-rsa
cd /etc/easy-rsa
export EASYRSA=$(pwd)
easyrsa init-pki
easyrsa build-ca

# The CA cert and key will be generated
# see /etc/easy-rsa/pki/ca.crt
# and /etc/easy-rsa/pki/private/ca.key

# copy the CA cert to the openvpn directory
cp /etc/easy-rsa/pki/ca.crt /etc/openvpn/server/ca.crt


overlayfs
Anonymous (anonymous@undisclosed.example.com) — 2018-02-09T14:26:47+0800
OverlayFS

Make sure the kernel is newer than 3.18


# for Ubuntu 14.04 (upgrade kernel)
apt-get install linux-generic-lts-vivid linux-headers-generic-lts-vivid

# install kernel module
modprobe overlay
lsmod | grep overlay

# lower layer
low=/home/$USER/lower

# upper layer
upp=/home/$USER/upper

# tmp directory
wod=/home/$USER/work

# overlayfs mount
mount overlay -t overlay -o lowerdir="$low",upperdir="$upp",workdir="$wod" "$upp"


owncloud
Anonymous (anonymous@undisclosed.example.com) — 2017-04-17T00:45:18+0800
OwnCloud

Scan


sudo -u www-data php occ files:scan --path /[username]/files/


unlock files


DELETE FROM oc_file_locks WHERE 1


pacman
Anonymous (anonymous@undisclosed.example.com) — 2017-12-17T03:19:46+0800
Pacman

Init keying


pacman-key --init
pacman-key --populate archlinux


List installed packages


pacman -Qqen # Official
pacman -Qqem # AUR


pfsense
Anonymous (anonymous@undisclosed.example.com) — 2017-01-08T16:23:13+0800
Pfsense

BIND package

檔案路徑位於 /cf/named

notify record update


notify explicit;
also-notify {
	10.10.50.253;
};


postgres
Anonymous (anonymous@undisclosed.example.com) — 2018-02-16T22:31:10+0800
PostgreSQL


pacman -S postgres
sudo -u postgres -i
initdb --locale $LANG -E UTF8 -D '/var/lib/postgres/data'

sudo systemctl start postgresql
sudo systemctl enable postgresql

createuser --interactive
createdb myDatabaseName


pri
Anonymous (anonymous@undisclosed.example.com) — 2026-02-26T11:25:23+0800




proxmox
Anonymous (anonymous@undisclosed.example.com) — 2026-03-21T18:40:08+0800
Prepare Install Disk

Linux


dd bs=1M conv=fdatasync if=./proxmox-ve_*.iso of=/dev/XYZ


MacOS


diskutil list
diskutil list
diskutil unmountDisk /dev/diskX
hdiutil convert -format UDRW -o proxmox-ve_*.dmg proxmox-ve_*.iso
sudo dd if=proxmox-ve_*.dmg bs=1M of=/dev/rdiskX


pwgen
Anonymous (anonymous@undisclosed.example.com) — 2017-01-18T15:32:58+0800
PWGEN


pwgen -cny 32 1


python
Anonymous (anonymous@undisclosed.example.com) — 2017-12-21T23:52:41+0800
Python

local pip install

local pip install without sudo


pip install --user PACKAGE


  * 無序列表項目


rancher
Anonymous (anonymous@undisclosed.example.com) — 2017-02-18T16:42:06+0800
rancher

Enable open-vm-tool


[rancher@rsa conf]$ sudo ros service list
disabled amazon-ecs-agent
disabled kernel-extras
disabled kernel-headers
disabled kernel-headers-system-docker
disabled open-vm-tools
disabled zfs

[rancher@rsa conf]$ sudo ros service enable open-vm-tools
Pulling open-vm-tools (rancher/os-openvmtools:v0.8.0-rc9)...
v0.8.0-rc9: Pulling from rancher/os-openvmtools
3a635c0fcefb: Pull complete 
bf3f7e9b4869: Pull complete 
ad323864e1f8: Pull complete 
b4d3fc870200: Pull comple…


recode
Anonymous (anonymous@undisclosed.example.com) — 2017-01-08T23:52:25+0800
Recode

轉換編碼 BIG5 to UTF-8


find . -type f -iname *.php -exec sh -c 'echo $1 && recode BIG5..UTF-8 $1' -- {} \;


repo
Anonymous (anonymous@undisclosed.example.com) — 2017-08-03T15:54:56+0800
repo

Install repo tool


curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
chmod a+x ~/bin/repo




Using repo tool


mkdir new-proj
cd new-proj
repo init -u [upstream-url] [options]
repo sync
repo status





rhel
Anonymous (anonymous@undisclosed.example.com) — 2016-12-04T23:20:27+0800
YUM


yum search epel
yum install epel-release
yum list glibc


yum --setopt=tsflags=noscripts remove xxx
rpm -e --noscripts xxx
yum clean all && rpm --rebuilddb
package-cleanup --problems



RPM Build


# setup working directories
rpmdev-setuptree

# download source defined in spec file
spectool -g -R SPECS/package.spec

# build package
rpmbuild -ba SPECS/package.spec

# show build script of a package
rpm -qpl --scripts RPMS/x86_64/package-0.1.0-1.el6.x86_64.rpm


routeros
Anonymous (anonymous@undisclosed.example.com) — 2023-03-25T15:55:13+0800
RouterOS

Basic Rule



winbox for mac



Install CHR on Proxmox


wget https://download2.mikrotik.com/router...

apt-get update
apt-get install unzip

unzip chr-6.44.5.img

qemu-img info
qemu-img resize chr-6.44.5.img +10G
qemu-img info

qm importdisk 100 chr-6.44.5.img local-lvm


rsync
Anonymous (anonymous@undisclosed.example.com) — 2024-03-17T00:58:06+0800
複製資料


rsync -avhW --no-compress --info=progress2 src/ dst/


rsyncd 設定檔 (server)

rsyncd.conf


pid file = /var/run/rsyncd.pid
lock file = /var/run/rsync.lock
log file = /var/log/rsync.log

[nas]
path = /shares/rsync/nas
uid = root
#gid = share
gid = root
read only = no
list = yes
auth users = root
secrets file = /etc/rsyncd.secrets


s5
Anonymous (anonymous@undisclosed.example.com) — 2017-01-10T14:59:30+0800
H1 標題

S5

----------

H2 標題

S5

----------


samba
Anonymous (anonymous@undisclosed.example.com) — 2023-06-11T00:58:26+0800
samba

install


pkg install samba42
sysrc samba_server_enable="YES"


config

/usr/local/etc/smb4.conf


[global]
workgroup = WORKGROUP
server string = CSNA Server
netbios name = csna
wins support = Yes
security = user
passdb backend = tdbsam

[public]
path = /home/public
writable  = yes
browsable = yes
read only = no
guest ok = yes
create mask = 0644
directory mask = 0755
hosts allow = 140.116.0.0/255.255.0.0

[homes]
path = /home/%U
writable  = yes
browsable = yes
read only = no
guest ok = no…


sed
Anonymous (anonymous@undisclosed.example.com) — 2016-10-23T00:09:38+0800
Delete first line


sed '1d' file.txt > tmpfile;


sendmail
Anonymous (anonymous@undisclosed.example.com) — 2016-10-23T00:08:16+0800
*  
	*  


sidebar
Anonymous (anonymous@undisclosed.example.com) — 2017-03-01T02:45:51+0800
[Blog]

Wiki


slattach
Anonymous (anonymous@undisclosed.example.com) — 2017-10-27T23:25:21+0800
Slattach


PC1:
 1, sudo slattach -s 19200 -p slip -dL /dev/ttyUSB0
 2, sudo ifconfig sl0 10.0.0.1/24 up
 3, sudo route add default gw 10.0.0.254 sl0

PC2:
 1, sudo slattach -s 19200 -p slip -dL /dev/ttyUSB0
 2, sudo ifconfig sl0 10.0.0.2/24 up
 3, sudo route add default gw 10.0.0.254 sl0


squid
Anonymous (anonymous@undisclosed.example.com) — 2018-12-29T21:39:39+0800
Squid

Install


pkg install squid
pkg install htdigest
sysrc squid_enable="YES"


Auth

There are two ways to specify the password auth, htdigest or htpasswd.

htdigest

/usr/local/etc/squid/squid.conf


auth_param basic program /usr/local/libexec/squid/basic_ncsa_auth /usr/local/etc/squid/password
auth_param basic realm proxy
auth_param basic casesensitive


ssh
Anonymous (anonymous@undisclosed.example.com) — 2018-01-01T23:11:06+0800
sound redirection

power line font



receive sound via SSH


ssh @ 'arecord -f cd -t raw | oggenc - -r' | mplayer -
ssh @ ffmpeg -f alsa -ac 1 -i hw:3 -f ogg - | mplayer - -idle -demuxer ogg


send sound via SSH


arecord -f cd -t raw | oggenc - -r | ssh @ mplayer -
ffmpeg -f alsa -ac 1 -i hw:3 -f ogg - | ssh @ mplayer - -idle -demuxer ogg


start
Anonymous (anonymous@undisclosed.example.com) — 2024-07-20T11:22:46+0800
Nix

	*  Linux
	*  RHEL
	*  ArchLinux
	*  FreeBSD
	*  pfSense
	*  nix
	*  VyOS
	*  Ubuntu
	*  macOS

Window Manager,X

	*  i3wm
	*  xfce

Shell

	*  Bash
	*  Zsh

Networking

	*  IPV6
	*  RouterOS
	*  Wake on LAN

Programming

	*  Ruby
	*  Python
	*  Java
	*  C
	*  Cpp
	*  go

Template

	*  LaTex

Database

	*  MySQL
	*  Galera
	*  PostgreSQL

Virtualization

	*  ESXI
	*  Proxmox
	*  VirtualBox

Disk


stm32
Anonymous (anonymous@undisclosed.example.com) — 2021-02-27T03:03:42+0800
DFU flash


dfu-util -d 0483:df11 -a 0 -s 0x08000000 -D stm32f4.bin


Dev tool


yaourt -S gcc-arm-none-eabi-bin eclipse-arm gnuarmeclipse-qemu-bin
pacman -S ddd openocd stlink arm-none-eabi-gdb


Debug

GDB


arm-none-eabi-gdb --eval-command="target remote localhost:1234" YOUR_PROGRAM.elf


swap
Anonymous (anonymous@undisclosed.example.com) — 2016-09-05T20:41:34+0800
swapfile


sudo fallocate -l 4G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
sudo swapon -s
free -m
sudo vi /etc/fstab
/swapfile   none    swap    sw    0   0


swappiness


cat /proc/sys/vm/swappiness
sudo sysctl vm.swappiness=10


systemd
Anonymous (anonymous@undisclosed.example.com) — 2017-12-03T18:08:26+0800
Systemd

Suspenad and hibernate


systemctl suspend
systemctl hibernate

pmi action suspend
pmi action hibernate


Boot time analyze

systemd-analyze


systemd-analyze
systemd-analyze blame
systemd-analyze plot > /tmp/plot.svg


systemd-bootchart


systemd-bootchart


tcpdump
Anonymous (anonymous@undisclosed.example.com) — 2017-01-08T04:18:21+0800
TCP Dump

Capture ARP packet


tcpdump -ni INTERFACE_NAME -f arp


touch
Anonymous (anonymous@undisclosed.example.com) — 2016-10-23T00:06:47+0800
change modification date

FreeBSD


touch -d "2016-10-${i}T00:00:00" 


Linux


touch -d "2 hours ago" filename
touch -d "$(date -R -r filename) - 2 hours" filename


ubuntu
Anonymous (anonymous@undisclosed.example.com) — 2021-09-20T23:26:55+0800
Ubuntu

Fix boot partition full


sudo dpkg --list 'linux-image*'|awk '{ if ($1=="ii") print $2}'|grep -v `uname -r`
sudo rm -rf /boot/*-3.2.0-{23,45,49,51,52,53,54,55}-*
sudo apt-get -f install





# check current running linux kernel version
uname -a

# remove old kernel at /boot
apt-get purge linux-image-4.4.0-101-generic

# fix broken package
apt-get -f install
# clean up
apt-get autoremove
vi /etc/apt…


udev
Anonymous (anonymous@undisclosed.example.com) — 2017-01-06T11:53:09+0800
udevadm monitor --environment --udev


unifi
Anonymous (anonymous@undisclosed.example.com) — 2024-07-20T11:22:06+0800
UniFi

Fix WireGuard MTU

Refer to



root:~# cat /data/scripts/change-wg-mtu.sh
#/bin/sh
export PATH=/usr/sbin:$PATH
#iptables -t mangle -A UBIOS_FORWARD_TCPMSS -o wgclt1 -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
#iptables -t mangle -A UBIOS_FORWARD_TCPMSS -i wgclt1 -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss…


useragent
Anonymous (anonymous@undisclosed.example.com) — 2023-03-04T14:12:26+0800
User Agent

[|The user agents for web browsers on Windows
]]

Chrome on Windows


Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36



Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:110.0) Gecko/20100101 Firefox/110.0


vagrant
Anonymous (anonymous@undisclosed.example.com) — 2016-09-04T15:36:41+0800
vagrant ssh-config


make sure the permission of authorized_keys in guest OS is 0600.


virtualbox
Anonymous (anonymous@undisclosed.example.com) — 2018-02-26T14:32:00+0800
Virtualbox

punch down the VM size



Change disk UUID


VBoxManage.exe internalcommands sethduuid [filename]


vsftp
Anonymous (anonymous@undisclosed.example.com) — 2016-11-29T01:15:41+0800
FTP上傳作業環境

僅允許上傳，不能下載或刪除。

vim /etc/vsftpd.conf
加入 user_config_dir=/etc/vsftpd/vsftpd_user_conf 

vim /etc/vsftpd/vsftpd_user_conf/username
加入 cmds_denied=DELE,RNFR,RNTO,RMD,RETR,MKD,APPE


ABOR - abort a file transfer
CWD - change working directory
DELE - delete a remote file
LIST - list remote files
MDTM - return the modification time of a file
MKD - make a remote directory
NLST - name list of remote directory
PASS - send password
PASV - enter passive mode
PORT - open a data port
PWD - print w…


vyos
Anonymous (anonymous@undisclosed.example.com) — 2017-08-13T02:09:13+0800
VyOS

Dual Wan Load-balancing


set interfaces ethernet eth0 address 192.168.100.15/24
set interfaces ethernet eth1 address 172.17.100.15/24
set interfaces ethernet eth2 address 10.1.100.1/24
commit
set protocols static route 0.0.0.0/0 next-hop 192.168.100.1
set protocols static route 0.0.0.0/0 next-hop 172.17.100.1
commit
set service nat rule 1 source address 10.1.100.0/24
set service nat rule 1 outbound-interface eth0
set service nat rule 1 type masquerade
commit
set service nat rule 2 source …


wakeonlan
Anonymous (anonymous@undisclosed.example.com) — 2018-09-17T05:35:58+0800
Wake on LAN


yaourt -S etherwake
etherwake -D -i eth0 xx:xx:xx:xx:xx:xx


watch
Anonymous (anonymous@undisclosed.example.com) — 2017-03-27T18:53:56+0800
對機芯

	*  錶拿在手上搖幾下讓秒針動起來
	*  轉開龍頭手上鍊個十幾圈
	*  先把龍頭拉到第二段調整時間到跳日之後再調到大約中午十二點左右(避開換日區) 
	*  龍頭拉到第一段，調整日期到現在日期的前一日(今天如果是九號就請調到八號)


wd-my-cloud
Anonymous (anonymous@undisclosed.example.com) — 2016-08-18T18:32:04+0800
Disable all the stuff we don't need on a MyBookLive.




#!/bin/bash

# See http://mybookworld.wikidot.com/forum/t-583096
# See http://tech.roxee.tv/2012/06/12/solving-the-my-book-live-insane-load/
# http://community.wd.com/t5/My-Book-Live-Duo/New-MyBook-Duo-4Tb-astonishingly-slow-I-mean-really-soul/td-p/417642/page/5

# Disable all this stuff, but also make miocrawler drops its logs.
# vi /etc/rsyslog.d/miocrawler.conf

# [root@storagecasa r…


xfce
Anonymous (anonymous@undisclosed.example.com) — 2017-01-13T02:34:34+0800
xfce

Lock


xflock4


Logout


xfce4-session-logout --logout


xrdp
Anonymous (anonymous@undisclosed.example.com) — 2017-01-11T21:04:04+0800
xrdp


yaourt -S xrdp
systemctl enable xrdp.service
systemctl start xrdp.service


/etc/xrdp/xrdp.ini


; session section
[Xvnc]
name=Xvnc
lib=libvnc.so
username=ask
password=ask
ip=127.0.0.1
port=-1

[console]
name=console
lib=libvnc.so
ip=127.0.0.1
port=5900
username=na
password=ask


yubikey
Anonymous (anonymous@undisclosed.example.com) — 2019-02-02T18:46:17+0800
Yubikey

Yubico OTP



PIV


# yubikey manager
pacman -S yubikey-manager

# smart card daemon
systemctl start pcscd.service
systemctl enable pcscd.service

# enable U2F/smartcard/CCID feature
ykpersonalize -m86 # yubikey 4 or below
ykman config usb --enable-all # yubikey 5 or up

# generate key
yubico-piv-tool -s9a -ARSA2048 -agenerate -o pubkey.pem

# import key
yubico-piv-tool -s9a -a import-key -i key.pem

# self sign
yubico-piv-tool -a verify-pin -a selfsign-certific…


zfs
Anonymous (anonymous@undisclosed.example.com) — 2018-12-27T00:41:02+0800
ZFS

Format


ls -l /dev/disk/by-id
# mirror (advanced format disks: ashift=12)
zpool create -f -o ashift=12 -m /mnt/data POOL_NAME mirror [disk-ID]
zpool status
zpool status -v


Dataset


# enable encryption feature
zpool set feature@encryption=enabled POOL_NAME

# encrypted dataset with passphrase
zfs create -o encryption=aes-256-gcm -o keyformat=passphrase POOL_NAME/DATASET_NAME

# encrypted dataset with key
dd if=/dev/urandom of=/tmp/key bs=1 count=32
zfs create -o encryption=aes-256-gcm -o…


zimbra
Anonymous (anonymous@undisclosed.example.com) — 2016-09-05T22:35:55+0800
Zimbra


docker run -d -m 256M -h mail.jzis.me -v "${HOME}/.ssh/authorized_keys":/root/.ssh/authorized_keys -e TIMEZONE="Asia/Taipei" -e PASSWORD="adminadmin" -e MAILBOXD_DEBUG="no" zextras/zimbra8:8.6.0p7

JZ Wiki

airng

ansible

apache

archlinux

autofs

bind

bios_beep_codes

bluetooth

bootloader

btrfs

clonezilla

curl

data_recovery

date

dd

diff

dig

disk_utils

emacs

ffmpeg

find

font

freebsd

galera

gcc

git

gnuplot

go

gpg

haproxy

i3wm

initramfs

iptables

ipv6

latex

ldap

linux

loopback

luks

lvm

macos

mail

mdadm

mining

mysql

nfs

nginx

nis

nix

ntp

openssl

openvpn

overlayfs

owncloud

pacman

pfsense

postgres

pri

proxmox

pwgen

python

rancher

recode

repo

rhel

routeros

rsync

s5

samba

sed

sendmail

sidebar

slattach

squid

ssh

start

stm32

swap

systemd