Bash or sehll

install wsl

wsl --list -o
wsl --install -d Ubuntu-22.04
wsl --set-default <Distribution Name>
# version wsl to set if 1
wsl --set-version <distribution name> <versionNumber>

# in bash
sudo apt update        # Fetches the list of available updates
sudo apt upgrade       # Installs some updates; does not remove packages
sudo apt full-upgrade  # Installs updates; may also remove some packages, if needed
sudo apt autoremove    # Removes any old packages that are no longer needed
sudo apt-get purge --auto-remove packagename # purges/removes a package

create shortcut

symlink to list them sudo find / -type l list them from the directory ` find -L . -type lthey are attached to a directory to see where it is linking torealpath link_nameyou can remove themrm link1`

ln -s /mnt/opera/Screening/ Screening ln -s /mnt/OperaImages/ /mnt/opera

to go to the symlinl cd -L yoursymlink to know where you are pwd -P

report file system disk space usage

df -h

config function or alias

nano ~/.bashrc

Modify this file and it will be loaded all the time example:

# Alias Dorian
alias rename.video='ls | grep mp4 | cat -n | while read n f; do mv "$f" `printf "temp_%04d.mp4" $n` ; done ; ls | grep mp4 | cat -n | while read n f; do mv "$f" `printf "%04d.mp4" $n` ; done'
alias move.old="mkdir old & mv *old*.mp4 old/"
alias merge.gpx='ff="";for f in *.gpx; do ff="$ff -f $f"; done; gpsbabel -i gpx $ff -x duplicate,location,shortname -o gpx -F "Merge.gpx"'

BU bashrc

cat ~/.bashrc > /mnt/c/Users/doria/Downloads/GitHub/dorian.gravier.github.io/files/bash/source/bashrc.sh

Bash file

Extension is sh but it is not important. To make it executable:

start script with #!/bin/bash
make it executable with chmod u+x yourfile
run it with ./youfile

read well this

Source

Color in echo

use echo -e with those codes.

R='\033[0;31m'   #'0;31' is Red's ANSI color code
G='\033[0;32m'   #'0;32' is Green's ANSI color code
Y='\033[1;32m'   #'1;32' is Yellow's ANSI color code
B='\033[0;34m'   #'0;34' is Blue's ANSI color code
M='\033[0m'   #'0 No Color

echo -e "I ${R}love${N} Linux"

Find ANSI codes here

Source

remove files

rm filename

with expression

rm file*

all recursively with space in names

find ./ -type f -printf '"%p"\n'| grep "(1)" | xargs rm -printf ‘“%p”\n’ is to get quotes %p means path, could use %f for file

kill process

find process id

pidof lighttpd

kill the process

kill theprocessidnumber

Packages

install

sudo apt-get update sudo apt-get install <name>

uninstall

sudo apt-get purge --auto-remove packagename

install dependencies

sudo apt-get install $(apt-cache depends <PACKAGE> | grep Depends | sed "s/.*ends:\ //" | tr '\n' ' ')

task manager or similar

top
ps -aux

get ip

ifconfig

installing exa or build packagename

https://github.com/ogham/exa/issues/783

In Ubuntu 20.04.4 LTS, I had to install cargo as well.

So the commands had to be modified to

sudo apt install libgit2-dev rustc cargo
sudo apt-mark auto rustc cargo
git clone https://github.com/ogham/exa --depth=1
cd exa
cargo build --release && cargo test #cargo test is optional
sudo install target/release/exa /usr/local/bin/exa
cd ..
rm -rf exa
sudo apt purge --autoremove

EDITORS

VIM

get in insert mode i escape insert mode esc button quit without saving

:q!

save and quit

:wq

RAM

Display available memory

free -m

Get your RAM

grep MemTotal /proc/meminfo

File System Disk Space Usage

df
df -a

Mount

sudo mount //10.13.20.9/hts  /mnt/hts_share -t cifs -o username=youruser,password=yourpw
sudo mount //10.13.44.9/hts  /mnt/hts_share -t cifs -o username=robolab,password=labarobo
sudo mount //10.13.44.9/OperaImages  /mnt/opera -t cifs -o username=robolab,password=labarobo
sudo umount /mnt/hts_share

Keep them mounted:

cat /proc/mounts
# Copy the lines from the mounted drives
sudo nano /etc/fstab
# add those line there in fstab

Windows Ubuntu

cd /mnt
sudo mkdir h
sudo mount -t drvfs '\\10.13.20.9\hts' /mnt/h
sudo mkdir x
sudo mount -t drvfs '\\10.13.20.9\OperaImages' /mnt/x
sudo mkdir l
sudo mount -t drvfs '\\10.13.20.10\Ablage' /mnt/l

change title terminal or console

PS1="\[\e]2;yournewname\a\]"

or use a function from https://askubuntu.com/a/774543/1121492

# function to set terminal title
function set-title(){
if [[ -z "$ORIG" ]]; then
ORIG="$PS1"
fi
TITLE="\[\e]2;$*\a\]"
PS1="${ORIG}${TITLE}"
}

Slurm

cmd

print queue squeue squeue –format=”JobID,JobName%30” change format squeue print https://stackoverflow.com/questions/39521707/can-you-change-the-default-output-from-slurms-squeue-command You simply set the SQUEUE_FORMAT environment variable with the options you specify on the command line. Exemple: export SQUEUE_FORMAT=”%.18i %.9P %.20j %.8u %.2t %.10M %.6D %.20R %q” Write the above line in your .bash_profile file and you will always have the additional QOS column in your output. .bash_profile is in your user home folder. If does not exist.

touch .bash_profile nano .bash_profile

write your line, save and exit reboot send job sbatch yourshbatch.sh with inside

!/bin/sh
SBATCH --nodelist=wormulon-6   or  here --partititon=screening
SBATCH --job-name=Check-install-packages

Rscript /mnt/hts_share/Data/R/Functions/Wormulon/Check-Install-Packages_Wormulon_v03.R

Wormulon

Run ssh cmd on all nodes

for host in {1..17}; do ssh -t cellprofiler@wormulon-$host ‘Rscript /mnt/hts_share/Data/R/Functions/Wormulon/Check-Install-Packages_Wormulon_v03.R’; done; for host in {1..17}; do ssh -t cellprofiler@wormulon-$host ‘Rscript /mnt/hts_share/Data/R/Functions/Wormulon/Functions_Wormulon_v05.R’; done;

find / grep / find words

for windows use Gow https://github.com/bmatzelle/gow on Gow Regular expression, recursive, list

grep -RlE "word1|word2" *.doc

R is recursive l stands for “show the file name, not the result itself”. E to use regex expression or use egrep only in current directory, not recursive

grep -s string *

search files, gow does not have find cmd so use ls in combinaison with grep

ls -lRt | grep "filename"
ls -lR | grep "filename"
ls -lR | grep "filename" | sort

or just with windows dir cmd

dir /s /b *filename*

replace recursively

grep -rl "MPB-SS1" * | xargs sed -i "s/MPB-SS1/BKG-SS1/g"

-rl for list and recursive xargs -0 to be able to take space in filenames (not sure it is working) with special character

grep -rl "mnt\/opera\/scripts" *.* | xargs sed -i "s/mnt\/opera\/scripts/mnt\/hts_share\/Data\/R\/Functions/g"

grep and last line

grep -s string *.* | tail -1

grep line above line below

grep's -A 1

option will give you one line after; -B 1 will give you one line before; and -C 1 combines both to give you one line both before and after, -1 does the same You can also only print the line below by combining 2 grep:

grep -Es -A 1 ".*temperature.*Measinfo.*" *.* | grep -v "temperature"

You then can hide filename and cut the string (first grep), here e.g. to get temperature of envision files

grep -hEs -A 1 ".*temperature.*Measinfo.*" *.* | grep -v "temperature" | cut -c23-28

grep hide filename

grep -h

Silver search - ag

Ignore some extension

ag --ignore *gpx garmin

List only files names

ag -l garmin

sed or perl - Replace string in multiples files

use sed : https://stackoverflow.com/questions/11392478/how-to-replace-a-string-in-multiple-files-in-linux-command-line

sed -i "s/stringtosearch/stringtoreplace/g" *

Example to replace BC in logfiles : H:\Data\Thermo\Echo\ARP_3079\Barcode_exchange\PS85\20190926_Replace_BC_PS85.xlsx H:\Data\Thermo\Echo\ARP_3079\Barcode_exchange\PS85\TUTO_Exchange_BC_multiple-plates_Polara-log.md

sed -i -E "s/(.+)S=1:C(.+)BAR CODE READ, NOCODE(.+)/\1S=1:C\2BAR CODE READ, AxxEXP210mM_028\3/g" "H:\Data\Thermo\Echo\ARP_3079\Barcode_exchange\PS85\3079_CP_01.log"

Examples

perl -i -pe "s|\<Placemark id\=.pea.*?\<\/Placemark\>||g" Gipfelbuch_huts.kml

Loop

Use in and out from 2 different files

j=1
echo "echo test" > Change_names.sh
for i in {001..554}
do 
in="WPT$i"
out=$(sed "${j}q;d" kmlnames.txt)
echo "perl -i -pe 's|${in}|${out}|g' Gipfelbuch_huts.gpx" >> Change_names.sh
((j++))
done

Leading zero (leading 0)

for i in {001..554}; do; echo $i; done

nrow=$(cat kmlnames.txt | wc -l)
for i in for i in $( eval echo {001..$nrow} ); do; echo $i; done

Multilines to Multilines

You want to replace this:

if( paste0(Sys.info()[4]) == 'DESKTOP-MG...PG' ) {
  rootpath <- 'C:/Users/doria/Dropbox/Shared_Dorian/'
  Sys.setlocale('LC_ALL', 'German')
} else {
  if( paste0(Sys.info()[4]) == 'DORIANSRECHNER' ) {
    rootpath <- 'C:/Users/dorian.BSPM/Dropbox/Shared_Dorian/'
  } else {
    rootpath <- 'C:/Users/buero.BSPM/Dropbox/Shared_Dorian/'
  }
}

after.txt is :

rootpath \<\- 'D\:\/BU_Work\/Maxi_BU\/20240812\/Shared_Dorian\/' 
Sys\.setlocale\('LC_ALL', 'German'\)

Prepare you expression and you after.txt to include “\n” (check source) You can use the online tool to escape regex

perl -i -0 -pe "s/if\( paste0\(Sys\.info\(\)\[4\].*?utf-8\"\)/$(cat after.txt)/s" Bike_map_location_choose_v02.R

Then run it only on the files you are interested in:

PLEASE MAKE SOME TEST BEFORE

ag -l DORIANSRECHNER | xargs -0 perl -i -0 -pe "s/if\( paste0\(Sys\.info\(\)\[4\].*?utf-8\"\)/$(cat /mnt/c/Users/doria/Downloads/sedtemp/after.txt)/s"

other example with xargs -I ß

ag -i "\# setup\r\n" -l | xargs -I ß perl -i -0 -pe "s/\# setup.*utf-8.\)\r\n\)\)/$(cat /mnt/c/Users/doria/Downloads/sedtemp/replace.txt)/s" "ß"

count

count number of lines or words

wc -l filename wc -w filename

number of files

-l <folder> | wc -l

merge files or concatenate

cat header.csv adult.data > adult.csv

Change colors terminal

Bash ubuntu windows

ALL ANSWER HERE https://superuser.com/a/1284236/860920 Bash ubuntu windows come with shitty colors that are difficult to read Change color directories cd /home/

ls -a

You should find a .bashrc make a

cp .bashrc .bashrcBU

add 2 lines

echo "LS_COLORS='rs=0:di=1;35:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:';" >> .bashrc
echo "export LS_COLORS" >> .bashrc

or via vim before change vim also background to see correctly echo “set background=dark” » .vimrc quit and restart

You then still have the path in the name with this strange blue color What is written come from PS1 (session variable). To mke it permanent we have to write it in a file that is loading at the beginning. A good one is the .bashrc. (https://linuxconfig.org/bash-prompt-basics=) echo $PS1 Copy this somewhere https://apple.stackexchange.com/questions/219125/is-there-a-way-to-change-the-font-color-of-the-current-path-in-termial echo $PS1 [\e]0;\u@\h: \w\a]${debian_chroot:+($debian_chroot)}[\033[01;32m]\u@\h[\033[00m]:[\033[01;34m]\w[\033[00m]$ [\033[01;34m] is your strange color Overwrite with echo “PS1=’[\e]0;\u@\h: \w\a]${debian_chroot:+($debian_chroot)}[\033[01;32m]\u@\h[\033[00m]:[\033[01;35m]\w[\033[00m]$’” » /home/gravier/.bashrc quit and restart

Find which OS

cat /etc/os-release

find duplicate lines in file

https://stackoverflow.com/questions/6712437/find-duplicate-lines-in-a-file-and-count-how-many-time-each-line-was-duplicated

sort <file> | uniq -c

Do display only duplicates

sort <file> | uniq -d

Save only unique value

cat a.txt b.txt | sort | uniq -u > unique.txt combine both files, sort it alphabeticaly, take only unique values cat a.txt b.txt | sort | uniq -d >> unique.txt combine both files, sort it alphabeticaly, take only duplicate values and append it to the file ‘unique.txt’ wc -l unique.txt * count the number of lines*

pdftk

merge all in folder

pdftk *.pdf cat output mergedfiles.pdf

space on disk

sudo apt install ncdu  
sudo ncdu / --exclude /mnt

Compare files

diff -y Google_Calendar_Dori.csv Google_Calendar_Dori2.csv
diff --color Google_Calendar_Dori.csv Google_Calendar_Dori2.csv

csv

Print readable

pip install csvkit
csvlook"Google_Calendar_Dori (1).csv"

Print near each other

pr -m -t Google_Calendar_Dori.csv Google_Calendar_Dori2.csv
pr -m -t -w 200 Google_Calendar_Dori.csv Google_Calendar_Dori2.csv

merge columns

paste -d , file1.csv file2.csv
paste -d , <(csvcut -c ID,ContestName,ContestNameShort,ContestLength "$fdir/temp.csv") <(echo ContestStart && (csvcut -c ContestStart "$fdir/temp.csv" | tail -n +2 | perl -pe "s|(.*)\..*|\1|g" | xargs -I \\ date -d@\\ -u +%H:%M:%S)) | csvlook > Info_Contest.txt

line by line 2 files

Or let’s say: How to Read Corresponding Lines From Two Input Files.

I found the solution here and would expose only by favorite one.

grep "LC20lb MBeuO DKV0Md" "site_https___www.climbers-paradise.com_ filetype_pdf - Google Search.html" | perl -pe "s|.*>(.*?)<.*|\1|g" > Name.txt
grep "jsname=.UWckNb." "site_https___www.climbers-paradise.com_ filetype_pdf - Google Search.html" | perl -pe "s|.*href=.(.*?). .*|\1|g" > pdf_link_climbingpara.txt

while read -r -u 3 lineA && read -r -u 4 lineB
do
    echo curl -o "$lineA" "$lineB" >> Download.sh
done 3<"Name.txt" 4<"pdf_link_climbingpara.txt"

Rename files with perl or sed for loop

for i in *pdf;do
	new=$(echo $i | perl -pe 's/(.*?)_(.*?)(_\d*.pdf|.pdf)/\2__\1__\3/g')
	mv "$i" "$new"
done

Source in SuperUser

quotes in double quotes in quotes

Tricks with quotes and double quotes from here:

$ echo 'abc'"'"'abc'
abc'abc
$ echo "abc"'"'"abc"
abc"abc

read mdb files or ses

Source found here.

Working with mdb and ses file extensions.

file="filename.ses"
mdb-tables -1 "$file"
tablewanted=( customFields settings ranks teamscores contests results )
for value in "${tablewanted[@]}"; do mdb-export -d \\t "$file" $value > "${value}.csv"; done

# export in normal csv
mdb-export "backup_Lenzburger Lauf 2024_20240523-164107.ses" contests > "$fdir/temp.csv"

Size

Size folders

sudo apt-get install ncdu
ncdu

list packages size

dpkg-query -Wf '${Installed-Size}\t${Package}\n' | sort -n

Source

unicode to utf-8

ascii2uni -a U -q

read json and export csv

Source Manual

cat yourjson | jq -r '.[] | join("\t\t")' > "UDF.csv"
cat yourjson | jq -r '.[] | join(";")' > "UDF.csv"
# or even better
cat yourjson | jq -r '.[]' | jq -r @csv > test.csv

# depending on your json- will extract headers and use it -- really good
cat Contests.lvs | jq -r ' (.[0] | to_entries | map(.key)), (.[] | [.[]]) | @csv' > Contest.csv

Source here

You can try everything here :

jq command:

# prettify
cat test.txt | jq '.'
# with arrays
cat test.txt | jq '.[]'
# access with index
cat test.txt | jq '.[1]'
# with Name
cat test.txt | jq '.[].name'
# select certain rows
cat test.txt | jq '.[]' | jq 'select(.id == 65061)'
# use select with regex
cat test.txt | jq '.[]' | jq 'select(.title_short | test("111"))'
# export in csv big example
curl "https://park4night.com/api/places/around?lat=46.25977500237305&lng=8.776788825087465&radius=200" | jq '.[]' | jq '[.id, .lat, .lng, .rating, .type.label, .url, .title_short, .description]' | jq -r @csv > test.csv

Export what you want how you want, found here

echo '[{
    "name": "George",
    "id": 12,
    "email": "george@domain.example"
}, {
    "name": "Jack",
    "id": 18,
    "email": "jack@domain.example"
}, {
    "name": "Joe",
    "id": 19,
    "email": "joe@domain.example"
}]' | jq -r '.[] | "\(.id)\t\(.name)"'

csv to json

For RR:

save csv with comma separators

jq Contest_new.csv -p=csv -o=json | perl -pe 's|\{\}|"{}"|g' > Contest_new.lvs

here the json to csv that comes before

# depending on your json- will extract headers and use it -- really goog
cat Contests.lvs | jq -r ' (.[0] | to_entries | map(.key)), (.[] | [.[]]) | @csv' > Contest.csv

P4N matrix coordinate

mkdir P4N_csv
cd P4N_csv

lat1=45.7
lon1=6
id=0

for ((i=1;i<=20;i++)) do
for ((j=1;j<=40;j++)) do
id=$((id+1))
# echo $lat1*$i*0.1
lat=$(echo $lat1+$i*0.1 | bc)
lon=$(echo $lon1+$j*0.2 | bc)
url=$(echo "https://park4night.com/api/places/around?lat="${lat}"&lng="${lon}"&radius=200")
curl "${url}" | jq '.[]' | jq '[.id, .lat, .lng, .rating, .type.label, .url, .title_short, .description]' | jq -r @csv > P4N_$id.csv
done
done

gpx

split segment or tracks

check this out

splitgpxtrack() {
    basename="${1%.*}"
    grep name "$1" | perl -pe "s|.*<name>(.*)</name>|\1|g" \
    | cat -n | while read n f; do 
        f2=$(slugify "$f")
        fout=${basename}-${f2}.gpx
        gpsbabel -i gpx -f "$1" -x track,name="$f" -o gpx -F "$fout"
    done
}

export gpx in csv

gpsbabel -i kml -f "in.kml" -t -o unicsv -F "out.csv"
gpsbabel -i kml -f "in.kml" -t -o csv -F "out.csv"

remove gpx points

gpsbabel -i kml -f "in.kml" -x nuketypes,waypoints -o gpx -F "out.gpx"

Raspberry lessons

# full upgrade after booting raspberry
sudo apt -y full-upgrade 

# ip adresses
ip -br -c a # best of all
hostname -I
ip a
ifconfig
ip route
nmcli

# taskmanager list
ps auxww
ps auxww | grep dhcp
# kill process with pid
kill -9 PID

# check connection ip
nmcli device
nmcli dev
nmcli connection 
nmcli con
nmcli device show eth0
nmcli device modify eth0 ipv4.method auto
nmcli device modify eth0 ipv6.method auto
# with gui change connection
sudo nmtui 
# or with nmcli
nmcli con mod eth0 ipv4.addresses 192.168.137.89/24
nmcli con mod eth0 ipv4.gateway 192.168.137.1
nmcli con mod eth0 ipv4.dns “8.8.8.8”
nmcli con mod eth0 ipv4.method manual
nmcli con up eth0
# The changes will be written to /etc/sysconfig/network-scripts/ifcfg-eth0 file


# remove useless packages
sudo apt autoremove

# To scan for wireless networks, run the following command:
nmcli dev wifi list
# Connect to a network
sudo nmcli --ask dev wifi connect <example_ssid>
# check if connected
nmcli dev wifi list
# set network priority
nmcli --fields autoconnect-priority,name connection
#Use the nmcli connection modify command to set the priority of a network. The following example command sets the priority of a network named "Pi Towers" to 10:
nmcli connection modify "Pi Towers" connection.autoconnect-priority 10


# to source a file in shell script use . instead of source

install driver AX1800 from BrosTrend

Do not follow their instruction but follow this https://github.com/morrownr/rtl8852bu

Vnc server

sudo raspi-config

Go in Interface / VNC / Enable / Yes Will start automatically vnc server at start

To start RealVNC Server now: sudo systemctl start vncserver-x11-serviced To start RealVNC Server at next boot, and every subsequent boot: sudo systemctl enable vncserver-x11-serviced To stop RealVNC Server: sudo systemctl stop vncserver-x11-serviced To prevent RealVNC Server starting at boot: sudo systemctl disable vncserver-x11-serviced

Good Tutorial

get what happening on the board

pinout

get file btw windows and Pi

on Windows cmd

scp pi@192.168.178.67:~/Downloads/Gopro/20240717__100140_100207.png "C:\Users\doria\Downloads\OBS\test.png"

Synchronisation

rsync -avzP -e ssh pi@192.168.178.67:~/Downloads/Gopro/ /mnt/c/Users/doria/Downloads/OBS/pi

source

On the Windows PC:

Connect the PC to the WiFi and ensure Internet connection is working locally
Connect the PC to the LAN and ensure the Ubuntu LAN IP is reachable
You’d better use fixed IP adresses on the LAN instead of DHCP, or make DHCP reservations on the LAN router
Go to Control Pannel > Network & Sharing > Network Connections > right-click on the WiFi connection > Properties
- WiFi connection: On the Share tab > Allow other users to connect… If you don’t see the share tab, you may want to disable this feature on the other connections (the wired one) for the tab to appear.
- WiFi connection: On the Network tab, Internet Protocol version 4 > Properties > Advanced > Disable Auto metric. Use a low metric (eg. Interface Metric = 5).
Run ipconfig from a command prompt and note the Ethernet connection (wired LAN) IP address ().

On the Ubuntu PC:

Run sudo ip route add default via <IP> proto static metric 50

to reset this reset ip routes ip route flush table main

Tips to debug:

Windows:

ipconfig /all
route PRINT
tracert 8.8.8.8

Ubuntu:

ifconfig and nmcli dev show
ip route
traceroute 8.8.8.8

packages not fully Installed

Check which one sudo dpkg -C Delete the folders

cd /var/lib/dpkg/info/
ls | grep packagename
ls | grep packagename | xargs sudo rm 
sudo dpkg --configure -a
sudo apt-get update

if debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable

then sudo fuser -v /var/cache/debconf/config.dat sudo kill PIDshown

calculator bc Example

start=(47.3 12.66)
end=(37.3 25.66)

# /1 ist to get int 
h=$(echo "(${start[0]}-${end[0]})*10/1" | bc)
w=$(echo "(${start[1]}-${end[1]})*10/-1" | bc)

# scale=2 is to have 2 decimal after the .
lat=$(echo "scale=2;${start[0]}+($i/10)" | bc -l)
lon=$(echo "scale=2;${start[1]}+($j/10)" | bc -l)

rename or move files from subdirectories with subdirectories names

Another version, that is renaming and moving the files to the parent directory. But you can change the last line as you want.

here=$(pwd)
for f in */*.jpg; do
	dir=$(dirname $f)
	image=$(basename $f)
	echo mv ${here}/${f} ${here}/${dir}_${image}
done

github page with so many example and Tips

e-bash

convert csv to html table

awk 'BEGIN {print "<table border=\"1\">"}
     NR==1 {print "<tr>"; for (i=1; i<=NF; i++) print "<th>" $i "</th>"; print "</tr>"}
     NR>1 {print "<tr>"; for (i=1; i<=NF; i++) print "<td>" $i "</td>"; print "</tr>"}
     END {print "</table>"}' FS=, info2.csv > info.html

install wsl

create shortcut

report file system disk space usage

config function or alias

Bash file

Color in echo

remove files

with expression

all recursively with space in names

kill process

find process id

kill the process

Packages

install

uninstall

install dependencies

task manager or similar

get ip

installing exa or build packagename

EDITORS

VIM

RAM

File System Disk Space Usage

Mount

Windows Ubuntu

change title terminal or console

Slurm

cmd

Wormulon

Run ssh cmd on all nodes

find / grep / find words

Silver search - ag

sed or perl - Replace string in multiples files

Examples

Loop

Multilines to Multilines

count

count number of lines or words

number of files

merge files or concatenate

Change colors terminal

Bash ubuntu windows

Find which OS

find duplicate lines in file

pdftk

merge all in folder

space on disk

Compare files

csv

line by line 2 files

Rename files with perl or sed for loop

quotes in double quotes in quotes

read mdb files or ses

Size

Size folders

list packages size

unicode to utf-8

read json and export csv

csv to json

P4N matrix coordinate

gpx

split segment or tracks

export gpx in csv

remove gpx points

Raspberry lessons

install driver AX1800 from BrosTrend

Vnc server

get what happening on the board

get file btw windows and Pi

share connection from windows wifi throught lan to Linux

packages not fully Installed

calculator bc Example

rename or move files from subdirectories with subdirectories names

github page with so many example and Tips

convert csv to html table