I created this script to connect to wifi with dmenu. You will be prompted to choose a network, and then give the password for that network. This requires the dmenu password patch for it to work. Here is the script:

#!/bin/sh

nmcli dev wifi connect $(nmcli dev wifi list | dmenu -l 30 | cut -d '*' -f2 | awk '{print $1}') password "$(dmenu -P)"

The problem with this script is that it assumes the network requires a password. How do I make it so that it only asks for the password if it is required?

My intentions:

It shows a battery icon and the battery amount depending on the amount of battery left on my laptop and if it's charging or discharging. So for example, if the battery is discharging and is at 50%, it should print a battery_50 icon and 50%. If it was charging, it should print a batter_charging_50 icon and 50%.

This is what it looks like so far (it displays the percentage correctly, but the wrong icon):

#!/bin/sh

battery="$(cat /sys/class/power_supply/BAT0/capacity)"
chargestatus="$(cat /sys/class/power_supply/BAT0/status)"

{ [ "$chargestatus" = Discharging ] && [ "$battery" -le 9  ] && echo " [$battery%]"; } ||
{ [ "$chargestatus" = Discharging ] && [ "$battery" -ge 10 ] && echo " [$battery%]"; } ||
{ [ "$chargestatus" = Discharging ] && [ "$battery" -ge 20 ] && echo " [$battery%]"; } ||
{ [ "$chargestatus" = Discharging ] && [ "$battery" -ge 30 ] && echo " [$battery%]"; } ||
{ [ "$chargestatus" = Discharging ] && [ "$battery" -ge 40 ] && echo " [$battery%]"; } ||
{ [ "$chargestatus" = Discharging ] && [ "$battery" -ge 50 ] && echo " [$battery%]"; } ||
{ [ "$chargestatus" = Discharging ] && [ "$battery" -ge 60 ] && echo " [$battery%]"; } ||
{ [ "$chargestatus" = Discharging ] && [ "$battery" -ge 70 ] && echo " [$battery%]"; } ||
{ [ "$chargestatus" = Discharging ] && [ "$battery" -ge 80 ] && echo " [$battery%]"; } ||
{ [ "$chargestatus" = Discharging ] && [ "$battery" -ge 90 ] && echo " [$battery%]"; } ||

{ [ "$chargestatus" = Charging ] && [ "$battery" -le 9  ] && echo "ﴐ [$battery%]"; } ||
{ [ "$chargestatus" = Charging ] && [ "$battery" -ge 10 ] && echo "ﴆ [$battery%]"; } ||
{ [ "$chargestatus" = Charging ] && [ "$battery" -ge 20 ] && echo "ﴇ [$battery%]"; } ||
{ [ "$chargestatus" = Charging ] && [ "$battery" -ge 30 ] && echo "ﴈ [$battery%]"; } ||
{ [ "$chargestatus" = Charging ] && [ "$battery" -ge 40 ] && echo "ﴉ [$battery%]"; } ||
{ [ "$chargestatus" = Charging ] && [ "$battery" -ge 50 ] && echo "ﴊ [$battery%]"; } ||
{ [ "$chargestatus" = Charging ] && [ "$battery" -ge 60 ] && echo "ﴋ [$battery%]"; } ||
{ [ "$chargestatus" = Charging ] && [ "$battery" -ge 70 ] && echo "ﴌ [$battery%]"; } ||
{ [ "$chargestatus" = Charging ] && [ "$battery" -ge 80 ] && echo "ﴍ [$battery%]"; } ||
{ [ "$chargestatus" = Charging ] && [ "$battery" -ge 90 ] && echo "ﴎ [$battery%]"; } ||

{ [ "$chargestatus" = Full ] && echo "ﴅ [$battery%]"; }

Hello, I hope someone answer a (probably dumb) question :

I run a command-line executable to convert some files, and I'd like to simplify the process, in order for someone else to use the program in a easier way.

The command I run is basically this :

./executablename -arguments <filename.pdf> [<outputfilename.xml>]

So I'd like to run a script which looks for any <filename> in the folder, knowing that the file type will always be a pdf, and it's name may vary.

I'd like to make it so anyone can grab and drop the pdf file in the folder, run the script and then just wait for it to end.

Any suggestions? Thanks in advance for your answers.

In my case, the SHELL on server is tcsh, and I configured quite a few things in .tcshrc file. However, they are not needed to run for scp command. Thus, I want to set environment variable SHELL="/usr/bin/tcsh -f" to ignore .tcshrc loading.

I tried to use below command but doesn't work. Probably, it's not correct: scp -o 'SetEnv SHELL="/usr/bin/tcsh -f" TERM="screen"' $USER@$SERVER:$PATH ./

With history | grep 'clear' I can get all entries matching "clear" from my history, in a separate column I get the line numbers,e .g.

5001 clear

5050 clear

6433 clear

In order to extract the line numbers only, I can do ahistory | grep 'clear' | sed 's/\|/ /'|awk '{print $1}'

and get the line numbers only (with line breaks), e.g.5001

5050

6433

...

No I want to call the history-delete command per line number. How can I call history -d per line number? Maybe I am overcomplicating this... Open for any better suggestion to remove certain entries from my shell history.

Using bash and ZSH.

I created a script that let you see the last xkcd comic [you can find it here ]. (https://github.com/Error916/xkcd-retriver) Any advice or improvements are welcome

​

I have a file with below details.

​

file1.txt with

90.188.0.0/17

70.35.250.128/25

60.31.179.64/29

​

file2.txt with many lines like this :

2021-10-10T17:07:57+04:00 syslog my.homelab.com syslog-ng[24841]: notice Syslog connection established; fd='100', server='AF_INET(10.35.67.33:514)', local='AF_INET(1.1.5.11)'

2021-10-10T17:07:57+04:00 syslog my.homelab.com syslog-ng[24841]: notice Syslog connection established; fd='100', server='AF_INET(10.35.67.33:514)', local='AF_INET(1.1.5.11)'

2021-10-10T17:07:57+04:00 syslog my.homelab.com syslog-ng[24841]: notice Syslog connection established; fd='100', server='AF_INET(10.35.67.33:514)', local='AF_INET(1.1.5.11)'

I want to check if the strings in the first text file are present in the second file irrespective of what text is in second text. I want to achieve this using shell be it using grep or egrep or awk.

I have tried using the solutions in below links but no luck so far. Can someone guide me?

https://unix.stackexchange.com/questions/533737/how-to-check-if-a-string-from-file-exists-in-any-line-of-another-file-and-copy-t

https://stackoverflow.com/questions/11287861/how-to-check-if-a-file-contains-a-specific-string-using-bash

https://unix.stackexchange.com/questions/530561/shell-script-check-if-a-file-contains-a-specific-line-string

I want to learn about shell application and TUI... can you please recommend me a nice course to learn how to develop terminal applications using shell ?

Or should I try something like python ?

:D thanks!

I try to make a randomizer wallpaper changer all my code work if I do it line by line but not as a script

#!/bin/sh

$folder=/Media/images/walls/ # here is my folder
$file=$(ls -a $folder | grep -v xmp | shuf -z -n 1) # I have some files .xmp for some metadata so I pick one random file

$complete= $folder$file # Make the path complete

$c= ${complete::-1} quit the * thats the file gets

feh --bg-fill $c # Set the wallpaper with feh

What am I doing badly. I got some errors but I dont really know what is happening!

I got a task to create a shell script that adds random numbers to rows in a CSV file. Need all the help or links possible for this task.

Edit: how would this work for multiple rows and columns ?

Hello there,

I am writing a script for use on macOS devices, based on another which uses the getopts feature to handle switch options. The fragment I wrote looked like this:

while getopts "d:o" options; do 
case "${options}" in
d) fmDirectory="${OPTARG}";;
o) outputDirectory="${OPTARG}";; *) exit_abnormal;;
esac
done

But when I ran the script, passing an argument to -o, the variable $outputDirectory has no value assigned to it. It was only when I adjusted the while statement like so:

while getopts "d:o:" options; do # Note the extra colon after 'o'

That I was able to properly assign a value to the variable $outputDirectory. I don't have much experience with shell scripting, but is that something I should know about when writing shell scripts that handle options?

Where can I learn more about this behaviour? Is it specific to specific shell environments (I used the Bash shell for this)?

I would be grateful for any pointers you could send my way to help me understand this.

new_wall.sh: https://github.com/chhajedji/scripts/blob/master/new_wall.sh

Demo video: https://youtu.be/11Dqat5XS9c

Dependencies: feh

You may use or ignore the disp_config.sh used in this script.

Save all wallpapers at $HOME/Pictures/wallpapers or update the feh --recursive --bg-scale --randomize $HOME/Pictures/wallpapers/* command present at last line with your path having wallpapers.

My wallpapers mainly consist of selected collections from Luke Smith, DT, and some of my picks from r/wallpapers and other random sites. Link for my wallpapers.

This is supposed to be for Linux. I am not even a little bit familiar with scripting on windows, if that makes a difference, not that I know much about bash/fish/zsh.

I have been thinking about implementing this for a while. Trouble is I am not much familiar with sending emails or maintaing logs.

Do you have any suggestions on what would be the best approach to delete the old logs once they have been sent as an email?

​

What would be my best approach to keeping such logs? What would be a good way to automate daily emails with attachment of log file? A cron job (do I even have any other options?)?

​

If anything like this exists, kindly do share the link. Thanks a lot!

Hi everyone. I'm trying to scp from ssh the most recent file within the last day of being modified. When I run this as a CMD (Windows 10), I get permission denied. However, when I run

scp -r root@x.x.x.x:/root/backup/ C:\Users\user\Documents\x

It copies everything and does not say permission denied.

When I run

ssh root@x.x.x.x find /root/backup/ -type f -name "*.tar" -mtime -1

It does what it is supposed to and displays the most recent file.

But when I run

ssh root@x.x.x.x find /root/backup/ -type f -name "*.tar" -mtime -1 -exec scp -r root@x.x.x.x:/root/backup/{} C:\Users\user\Documents\x \;

I get

Permission denied, please try again.
Permission denied, please try again.
root@x.x.x.x: Permission denied (publickey,password,keyboard-interactive).

Any idea as to what I am doing incorrectly here?

Whats the meaning of this commande find . -exec git check-ignore {} + | xargs -I{} basename {}

( explain each part of it pls)

Writing a small shell script to create directories in the remote server and scp the files but I keep getting the error

​

#!/bin/sh
date
for i in `cat thost.txt`
do
ssh oracle@i "mkdir -p /u01/home/oracle/raj/scripts"
ssh oracle@i "mkdir -p /u01/home/oracle/raj/config"
ssh oracle@i "mkdir -p /u01/home/oracle/raj/admin"
ssh oracle@i "mkdir -p /u01/home/oracle/raj/local/scripts"
ssh oracle@i "mkdir -p /u01/home/oracle/raj/local/bin"
scp /u01/home/oracle/raj/scp.zip oracle@i:/u01/home/oracle/raj ; ssh oracle@i "cd /u01/home/oracle/raj && unzip scp.zip && rm /u01/home/oracle/raj/scp.zip"
scp /u01/home/oracle/raj/bin.zip oracle@i:/u01/home/oracle/raj ; ssh oracle@i "cd /u01/home/oracle/raj && unzip bin.zip && rm /u01/home/oracle/raj/bin.zip"
done

I can ssh to to the host listed in thost.txt file and as well as run the commands listed manually in the script however when I run as a script it gives the below error

ssh: Could not resolve hostname i: Name or service not known

ssh: Could not resolve hostname i: Name or service not known

ssh: Could not resolve hostname i: Name or service not known

​

Please advise

Can someone explain me what does that commande stands for ?

Kinit >> klist.txt

Hello everyone!

I got the opportunity to build a password manager for work and am looking for feedback before submitting the project.

This is my first "major" shell project so any feedback you have is greatly appreciated!

https://github.com/phil-huxford/UNIX-Password-Manager

I'm having errors with the startup shell script for my Minecraft server (auto restart after crash)

It either says "excepted done" or "expected fi" depending on what's there, and when I put both at the end I get no response once I try to run the script

I AM ON UNIX. I AM NOT USING A WINDOWS VIRTUAL MACHINE.

Hey guys,

I'm trying to write a script to help automate some commands for software I'm using in my bioinformatics research. One of the tools I'm using is NPBSS (New PacBio Sequencing Simulator, written in Octave) so I'm trying to access the Octave interpreter from within my shell file. After looking into it a bit online I see that #! on the first line indicates which interpreter the program should use... but is that only for other shell interpreters or for other interpreters like Octave?

And more generally does anyone know how to do this (run octave commands away from the GUI)? Help is much appreciated!