Countdown timer demo with bash-boost

A few days back, I answered a question here on how to center colored text in a noscript which was a basic countdown timer.

While it seems simple on its face, I found it to be an interesting use case to explore some of the features of `bash-boost`.

I wrote about the interesting parts of the noscript here. A link to the full noscript is at the bottom of the README.

Hope you may find something useful from this walkthrough to use in your own noscripts. :)

https://redd.it/1eq6k6s
@r_bash

I need 2 MacOS Shell/zsh/bash(idk) noscripts, clean folders up, and paste new files into folders, willing to pay

Hi, I need 2 noscripts:

- a noscript to put all files of a folder into a "used" folder. I have 80 folders where this needs to get done, hence i need a noscript. There may already be a "used" folder, but if it does not exist yet, create it

- a noscript to paste 20 new files into all 30 folders

I found this https://discussions.apple.com/thread/253031808?sortBy=rank but it's not exactly what i need

Can someone help me? I'm willing to pay 🙏 And Yes you can share the noscript publicly, you can also put it on your GitHub of course. So maybe it will help others too

Maybe we should make a small MacOS App out of it? Idk if automator is enough for it. tbh i got 0 experience with automator

I have M1 macbook

Thank you so much!!!!❤️🙏🙏🙏❤️❤️

all folders have the same parent folder & source is in same place in a folder.

But i do the task for different folders and sources so i can’t solve this by hardcoding paths

What I want is a drag&drop solution, or a solution where the finder selection pops up and i have to select the files

I can’t do it by path cuz this is a weekly task with always different paths

https://redd.it/1eq7lih
@r_bash

BashScripts v2.6.0: Turn off Monitors in Wayland, launch Chrome in pure Wayland, and much more.
https://github.com/hopeseekr/BashScripts/

https://redd.it/1eqbn3p
@r_bash

How to restart a 'man' process?

I'm writing a troff manual, I want a process to watch for changes and compile and open it with 'man'.

But I'm having issues, I'm currently using this noscript :

inotifywait -q -m -e close_write --format %e ./test.man| while read events; do man ./test.man;done

The problem is that since man need to quit before the next change detection starts, I need to know a way to :

1 - watch for file change

2 - open the file using man (even if a man is already running)


Note : I want to replicate how I work with latex and mupdf, since all it takes is to restart a mupdf process is `pkill -HIP mupdf`

https://redd.it/1eqehuy
@r_bash

Is it possible to export a bash function so that it will automatically enable extglob?

I have a bash function that uses some extglob which, if used in a shell with extglob disabled, fails to parse and throws a syntax error.

In the file containing the function source code I include a

shopt -s extglob

before the function is defined so that when the file is sourced extglob is enabled before the function is defined. But, if you export the function you only get the function, not the stuff before it. And any new bash shells will try and source the exported functions on startup.

In practice, this means that if I export my function, any future invocations of `/usr/bin/bash` that dont include `-O extglob` will print an error message to screen. This happens regardless if the bash shell being started is actually calling the exported function. It still runs if that exported function isnt used (since the error is that it cant parse the function), but is annoying nonetheless.

One specific annoyance with this that I use hyperfine to benchmark this function. the way hyperfine bootstraps the shells it runs, you can either use `--shell=bash` and itll use exported functions but wont have extglob, or you can use `--shell='/usr/bin/bash -O extglob'` to get extglob but you lose access to exported functions. You can use the ladder and then source the file defining the function and then run a the function, but then it skews the benchmarking times since you are timing how long it takes to source the function as well as timing the function runtime itself.

***

At any rate, does anyone know a trick so that exported functions that use extglob will parse correctly in a bash shell that doesnt explcitly enable extglob by being spawned via `bash -O extglob [...]`???

https://redd.it/1eqfzag
@r_bash

Formatting and mounting a flash drive via the terminal, not the UI

I'm issuing the following commands to format a 512GB flash drive:

sudo fdisk -l # fetch device ID (/dev/sdc1)

sudo umount /dev/sdc1

sudo mkfs.exfat -n USB-256GB /dev/sdc1

The output from the last command indicates that the flash drive was successfully formatted. How can I mount that device w/o having to select the device in the file explorer? I'd like to accomplish this using only the terminal.

https://redd.it/1eqgrco
@r_bash

argc - Top-tier utility/framework for creating shell noscripts

https://github.com/sigoden/argc

I’m not the author. Whoever it is, they are a bloody legend!

Figured I would share it as it deserves way more love.

https://redd.it/1eqvgj4
@r_bash

How to learn shell noscripting?

I have basic / intermediate knowledge of command line and would like to learn how to use shell noscripting. Are there websites or resources that provide problems that I can try and solve? I am also interested in shell noscripts for HPC so I was wondering what area I should focus on here.

https://redd.it/1erft7a
@r_bash

tmpmail v1.1.5 now supports receiving attachments
https://redd.it/1erzodj
@r_bash

What does - and -- mean in bash?

I've come across noscripts that use - or -- for arguments and it's never really explained what they do. What's it called and what's the usage?

# example using -
curl -fsSL 'some_url/install.sh' | env ENV="${HOME}/.bashrc" bash -

# example using --
command -- arg1 arg2

https://redd.it/1erzyy6
@r_bash

Using read -p to prompt bold variable with ANSI escape codes?

Hi,\
As the noscript, I was wondering if it is possible to do it.\
I've tried 1

var=candy
bold=$(tput bold)
normal=$(tput sgr0)

read -p "IS ${bold}$var${normal} correct? " ans
# assuming answer yes
printf "Your answer is \033[1m%s\033[0m." "$ans"

The output is what I desired, candy and yes are bold.\
I've tried 2

var=candy

read -rep $'Is \033[1m$var\033[0m correct?' ans
printf "Your answer is \033[1m%s\033[0m." "$ans"

It output $var, not candy,\
\
I'd like something similar to second options, that way I can easily make a new line using '\n'. 3\
Is there any better solution? Or better using printf and read separately. Something like

printf "Is \033[1m%s\033[0m correct?" "$var"
read ans
printf "Your answer is \033[1m%s\033[0m." "$ans"

~~I mean read -p is not supported in every shell, maybe it's a good habit to not use -p.~~

https://redd.it/1es3gp5
@r_bash

Configuration in bash?

I have this piece of code in Python:

URLVARIANTS = {
'barstool': {
'baseurl': 'mcepl@shell.eng.rdu.redhat.com:publichtml/',
'targeturl': 'http://file.rdu.redhat.com/~mcepl/',
'shortenapi': 'https://url.corp.redhat.com/new?'
},
'wotan': {
'baseurl': 'wotan:Export/',
'targeturl': 'https://w3.suse.de/~mcepl/'
},
'tmp': {
'baseurl': 'fedorapeople.org:publichtml/tmp/',
'targeturl': 'https://mcepl.fedorapeople.org/tmp/',
# 'shortenapi': 'http://is.gd/create.php?format=simple&url='
'shortenapi': 'https://da.gd/s?url='
}
}

curconf = URLVARIANTSsite

# now I am using curconf['baseurl'] etc.

How to rewrite it in bash? Yes, I know about https://linuxsimply.com/bash-noscripting-tutorial/array/array-of-arrays/ but the whole is so incredibly finicky and crazy, that I haven’t managed to pull it off (could somebody rewrite this example in the pure sh/bash?). The only alternative I could come up with is to make URL_VARIANTS a string contain JSON object, and then to use jq to separate requested values, but that sounds as a potential PITA as well.

Any thoughts?

https://redd.it/1esg0b3
@r_bash

[error] guys i think i broke bash in a way never before seen
https://redd.it/1etq4eu
@r_bash

how do i alias cowsay?

hello, i would like to take the command "cowsay" and alias so every time i type in "endvideo" into the terminal the cowsay command pops up and spits out

"like comment share and subscribe!"

how would i do this?

thank you

https://redd.it/1etti1j
@r_bash

Limit developers from running a command in command line in a project

We have a fresh Cloudflare worker Typenoscript project in which we currently use wrangler deploy --production command to deploy to production worker.

We want to disable using that command locally and enable it only on the CI/CD pipeline (Github Actions). The problem is that Cloudflare doesn't offer any kind of permissions to do that, except fully limitting developers from accessing Cloudflare by deleting their accounts, and obviously we don't want to do that.

Is there a way of using a bash noscript to accomplish this? And have that noscript fully executable for any developer who would have it locally in the project (git commited to the repository)?

I am fairly new to bash, so I'm not even sure I asked the right question, but I'd say you get the jist.

Also we are open to any other ideas to accomplish this.

Thanks

https://redd.it/1etywgb
@r_bash

Any tricks to not have to escape a quote?

I have a pretty lengthy cURL that looks something like this:

--data '{
"denoscription": "Foo",
"expression": "this is csdude\'s, it has \"this\", \"that\", and \"the other thing\""
}'

The real one is much longer; the longest is about 3800 characters, and there are 5 of them called in the bash noscript.

For the sake of easier coding and minimizing typos, is there a way to NOT have to escape all of the inner quotes?

I tried surrounding it with `, but that just threw an error :-/

https://redd.it/1eu9je9
@r_bash

More fun with jq, getting results into a usable array

I'm using this in a cURL to get the data from `result[]`:

foo=$(curl --request GET \
--silent \
--url https://example.com \
--header 'Content-Type: application/json' | jq -r '.result[]')



When I print $foo, this is what I have:

[key]
default

firewall_custom
zone
34
[
{
"id": "example",
"version": "6",
"action": "block",
"expression": "lorem",
"denoscription": "ipsum",
"last_updated": "2024-08-15T19:10:24.913784Z",
"ref": "example",
"enabled": true
},
{
"id": "example2",
"version": "7",
"action": "block",
"expression": "this",
"denoscription": "that",
"last_updated": "2024-08-15T19:10:24.913784Z",
"ref": "example2",
"enabled": true
}
]



What I need from this is to create a loop where, in a series of addtional cURLs, I can insert action, expression, and denoscription.

I'm imagining that I would push these to 3 separate arrays (action, expression, and denoscription), so that ${action\[0\]} would coincide with ${expression\[0\]} and ${denoscription\[0\]}, and so on.

Something along the lines of:

# assuming that I have somehow created the following arrays:
# action=("block" "block")
# expression=("lorem" "this")
# denoscription=("ipsum" "that")

for x in ${action[@]}; do
bar=$(curl --request GET \
--silent \
--url https://example.com \
--data '{
"action": ${action[$x]},
"expression": ${expression[$x]},
"denoscription": ${denoscription[$x]}
}' | jq '.success')

if [[ $bar == true ]]
then
printf "$x succeeded\n"

else
printf "$x failed\n"
fi

# reset bar
bar=''
done


The question is, how to create action, expression, and denoscription arrays from the results of $foo (that original cURL)?

https://redd.it/1euba4a
@r_bash

Tab-completion for a command name

I have two custom commands: play-music and play-video. I want to write a bash noscript that allows me to autocomplete these commands when I press TAB.

For example:

$ play<TAB>
play-music play-video

$ play-vi<TAB>
play-video

I’ve found a tutorial on creating a bash-completion noscript, but it only works for command arguments. How can I achieve this for the command names themselves?

https://redd.it/1eugy51
@r_bash

what is an "option" in bash? and how is it different the other arguments?

so i understand what an argument is, i understand that an option is a type of argument,

but what i don't understand is how an option is different then other types of arguments

can someone explain it to me?

thank you

https://redd.it/1eujcim
@r_bash

GitHub - AnonAmosAdmn/OTTO-STACK-DEPLOYER
https://github.com/AnonAmosAdmn/OTTO-STACK-DEPLOYER

https://redd.it/1euwj08
@r_bash

Bashtutor - interactive bash tutorial


I wrote a minimal framework for creating CLI obstacle courses.
Currently there is one "module" which is for Bash itself.
While its a proof of concept, I attempted to make it entertaining and smoothen the edges as much as I could.
The main inspiration was vimtutor and how I would have liked something like this back when I was starting out.

https://github.com/agvxov/bashtutor

I'm hoping it will be useful to someone somewhere.

https://redd.it/1ev6ex5
@r_bash