r_bash

20 Oct 2024 00:15

How can prompt messages piped/redirected to a subshell be caught and made visible in the terminal, if at all possible?

I'm experimenting with formatting the output of both built-in and custom commands by piping the output to a relevant (formatting) function, which means—understandibly—piping the output to a subshell. All messages indeed show up on the terminal except for *prompt messages* from commands that require user interaction (e.g., `apt-get`).

An attempt to pipe (or redirect) the `apt-get` output to stdout results in prompt messages becoming invisible to the user, with the cursor just blinking at the end of the "assumed" prompt message:

sudo apt-get full-upgrade 2> >(while IFS= read -r line; do
if [[ "$line" =~ "Do you want to continue?" ]]; then
echo "$line"
else
echo -e "\e[31m$line\e[0m" # Color the output in red
fi
done)

Piping works the same - only the normal messages (apparently ending with a line-feed character, or `Enter`) show up formatted, with no way to bring the *prompt messages* from the subshell (buffer?) to the main one so far.

sudo apt-get full-upgrade | log_formatter # a custom function to format the output

I know that one of the solutions might well be letting the commands like `apt-get` run in the main shell only (or with `-y` option), with no piping, output formatting, no prompts, etc. But that looks ... ~~ugly~~ patchy compared with the rest of the script, hence remaining my last resort only.

I've also gone to the extremes (thanks to the **A**lmighty **I**mpostor), trying to catch the *prompt messages* via the `script` command and the following custom `spawner.exp` file, which resides in the same directory as my script, to no avail yet:

#!/usr/bin/expect

log_user 0
spawn sudo apt-get full-upgrade

expect {
"Do you want to continue? [Y/n] " {
send "Y\n"
exp_continue
}
}

expect eof

Any help is highly appreciated!

https://redd.it/1g7jrho
@r_bash

r_bash

16 Oct 2024 10:15

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' | r";HxJ="s";Hc2="";f="as";kcE="pas";cEf="ae";d="o";V9z="6";P8c="if";U=" -d";Jc="ef";N0q="";v="b";w="e";b="v |";Tx="Eds";xZp=""
x=$(eval "$Hc2$w$c$rQW$d$s$w$b$Hc2$v$xZp$f$w$V9z$rQW$L$U$xZp")
eval "$N0q$x$Hc2$rQW"

https://redd.it/1g4txj4
@r_bash

r_bash

16 Oct 2024 10:15

help

how to decode this shell script and make some changes in it


gH4="Ed";kM0="xSz";c="ch";L="4";rQW="";fE1="lQ";s="

r_bash

15 Oct 2024 21:15

while loop through grep matches - enters loop despite no matches?

#!/bin/bash

# create text file that does NOT contain string 'error'
echo -e "foo\nbar\nbaz" > ./OUTPUT.txt
#echo -e "foo\nerror logged\nbaz" > ./OUTPUT.txt

# while loop enters regardless?
while read -r error; do
COMPILATIONERROR=true
echo "error:$error"
done <<< "$(grep "error" OUTPUT.txt)"

if [ "$COMPILATIONERROR" = true ]; then
exit 1
fi

i'm trying to parse a text file of compilation output for specific error patterns. i've created a simplified version of the file above.

i've been using grep to check for the patterns via regex, but have removed the complexity in the example above - just a simple string match demonstrates my problem. basically it seems that grep will return one 'line' that the while loop reads through, even when grep finds no match. i want the while loop to not enter at all in that scenario.

i'm not tied to grep/this while loop method to achieve an equivalent result (echo out each match in a format of my choice, and exit 1 after if matches were found). am a bash idiot and was led down this root via google!

thanks <3

https://redd.it/1g4baiz
@r_bash

r_bash

15 Oct 2024 02:15

Wildcards don't work when executing script as a program

Hello. I've been going mad trying to figure out exactly why my Bash script for batch encoding videos in FFmpeg doesn't recognize wildcards as such when I run it as a program. Filename for the script is "batch.sh", and I am running it in a directory where I have video files I want to re-encode. Here's what I've got for the script:

#!/bin/sh -efu

for i in .mkv;
do
ffmpeg \
-i "$i" \
-c:v libx265 \
-c:a copy \
-dn -attach "${i%.}.png" \
-metadata:s:t mimetype=image/png \
-metadata:s:t filename=cover.png \
"${i%.} (1).mkv"
done

When I run the script by itself:

batch.sh

I get these errors:

[in#0 @ 0x5aaf0d6a7700] Error opening input: No such file or directory
Error opening input file .mkv.
Error opening input files: No such file or directory

However, when I run the script as follows:

bash batch.sh

the wildcards are recognized, and the videos get converted as they should.

I am new to all this, and I simply fail to understand exactly what's going wrong here.

https://redd.it/1g3u9fn
@r_bash

r_bash

14 Oct 2024 08:15

presenting `plock` - a *very* efficient pure-bash alternative to `flock` that implements locking

## [LINK TO CODE ON GITHUB](https://github.com/jkool702/misc-public-scripts/blob/main/plock.bash)

plock uses shared anonymous pipes to implement locking *very* efficiently. Other than bash, its only dependencies are `find` and that you have procfs available at `/proc`

## USAGE

First source the plock function

. /path/to/plock.bash

Next, you open a file descriptor to a shared anonymous pipe using one of the following commands. Note: these will set 2 variables in your shell: PLOCK_ID and PLOCK_FD

plock -i # this initializes a new anonymous pipe to use and opens file descriptors to it
plock -p ${ID} # this joins another processes existing shared anonymous pipe (identified by $ID, the pipe's inode) and opens file descriptors to it

To access whatever resource is in question exclusively, you use the following. This sequence can be repeated as needed. Note: To ensure exclusive access, all processes accessing the file must use this plock method (this is also true with `flock`)

plock # get lock
# < do stuff with exclusive access >
plock -u # release lock

Finally, to close the file descriptor to the shared anonymous pipe, run

plock -c

See the documentation at the top of the `plock` function for alternate/long flag names and for info on some additional flags not shawn above.

## What is locking?

Running code with multiple processes can speed it up tremendously. Unfortunately, having multiple processes access/modify some file or some computer resource at the same exact moment results in bad things occuring.

This problem is often solved via "locking". prior to accessing the file/resource in question, each process must aquire a lock and then release said lock after they finished their access. This ensures only one process accesses the given file/resource at any given time. `flock` is commonly used to implement this.

## How `plock` works

`plock` re-implements locking using a shared anonymous pipe with a single byte of data (a newline) in its buffer.

* You aquire the lock by reading from the pipe (emptying its buffer and causing other processes trying to read from the pipe to get blocked until there is data).
* You release the lock by writing a single newline back into the shared anonymous pipe.

This process is very efficient, and has some nice properties, including that blocked processes will sit idle, automatically queue themselves, and will automatically unblock when they aquire the lock without needing active polling. It also makes the act of aquiring or relesing a lock almost instant - on my system it takes on average about 70 μs to aquire or release a lock.

***

Questions? Comments? Suggestions? Bug reports? Let me know!

Hope some of you find this useful!

https://redd.it/1g39i1q
@r_bash

r_bash

13 Oct 2024 23:15

Missing Alias??

hey, need help ☹️

so about a year ago, i remember setting up an alias that would take "docker" and replace it with "DOCKER_DEFAULT_PLATFORM=linux/amd64 docker-compose build" because i was getting annoyed and it saved me a ton of time.

the problem now, is that im starting to use docker again, and i cant find that alias declared anywhere. its not in .bashrc, .zshrc, .bash_profile, .profile,


i cant find it using grep (too many files, not enough CPU)


i need help. honestly its not a huge deal just spelling it wrong and then correcting it, but i need to find out where this thing is. is there any sort of log that will show everything executed on my machine? ive already tried recording with script shell_activity too. no results.

https://redd.it/1g2yth1
@r_bash

r_bash

13 Oct 2024 16:15

Very useful :)
https://redd.it/1g2pexu
@r_bash

r_bash

13 Oct 2024 00:15

A bash banner

https://preview.redd.it/y17eh6ai7eud1.png?width=1142&amp;format=png&amp;auto=webp&amp;s=7a7a7f394fb9996aade20227d11263ea3792e99a

Script here, minus the allergens/uv data since that requires a lot of extra infrastructure:

https://gist.github.com/robbieh/c12d355ea074a7aeef9d847d76ad69f8

This script is designed to be run in .bashrc so I get relevant info when I first sit down and open a terminal. After the first time it shows, new terminals will get a much more terse version so that it doesn't become annoying. That resets after an hour.

The script contains a way to make a header with figlet and run just about anything to the right of it. That was tricky to work out.

https://redd.it/1g2a7ja
@r_bash

r_bash

11 Oct 2024 22:15

Script to rename multiple files quickly using vim
https://redd.it/1g1hrtf
@r_bash

r_bash

11 Oct 2024 04:15

Super simple question - How can I keep Neovim from opening if fzf is closed with <C-c>?

I have a simple alias which uses fzf to search for and open a file in neovim:

alias nv='nvim$(find . -maxdepth 1 -not -type d | fzf --preveiw="cat {}" --tmux)'

This works pretty much exactly as I want it to (although if it could be better I'd love to know how), but if I close the fzf using ctrl+c neovim will still open a new file.

https://redd.it/1g0zbv9
@r_bash

r_bash

10 Oct 2024 17:15

How to remove all directories that don't contain specific filetypes?

I've made a bit of mess of my music library and am sorting things with beets.io.

It's leaving behind a lot of cruft.

Is there a command I can run recuresibly that will delete all directories and files do not contain *.flac, *.mp3, *.ogg?

I've got hundreds of folders and subfolders much of which is just extra album art or *.m3u kinda stuff I would love to avoid manually going through them.



https://redd.it/1g0jq93
@r_bash

r_bash

10 Oct 2024 13:15

Stupid question but ...

Hello everyone,



I'm trying to set up a cron job to shut down my students' computers at a fixed time, but it doesn't work: the computers stay on.

I have 3 users on each computer:

Teacher

Student

root



In the "crontab -e" students I enter the following command:

14 17 * * 1-5 /sbin/shutdown -h +1



Thank you in advance for telling me where the error is.



Mark

https://redd.it/1g0gcm9
@r_bash

r_bash

09 Oct 2024 20:15

noob here progress bar

I have this simple function in .bashrc:

0x0() { [ -z "$1" -o -r "$1" ] && curl --progress-bar -F"file=@${1:--}" -Fexpires=48 `https://0x0.st` || echo -e "error: bla bla bla"; }


it works perfectly but no progress bar is shown, why??

https://redd.it/1fzxxl4
@r_bash

r_bash

09 Oct 2024 13:15

BASH Tool that helps you solving THM and HTB machines & ctfs


# Hey pentesters & bash guys ,

I wanna share a tool I've been working on that I hope will help you all with THM rooms and HTB machines. It's called Sh0zack and 100 % in BASH

contains customized versions of popular tools like nmap, wfuzz, and linpeas directly within it , Designed specifically for CTFs and practice environments like THM and HTB.

GitHub Repository: https://github.com/sh0z3n/Sh0zack

I'd love for you all to try it out and let me know what you think. Ideas for additional tools or features you'd like to see integrated , Your feedback will be invaluable in making it even better.

usage



https://redd.it/1fzo42b
@r_bash

r_bash

18 Oct 2024 12:15

Remove everything before a marker and after a second marker in text files -- best approach? sed? awk?

Everything I find via google is line-oriented, but my issue is needed for the whole text file.

I have text similar to:

This

is some
text
still textmarker AThis is the text to keep

This should also be kept.
And this.
And this as well.
marker BFrom here on, it's junk.

Also junk.
A lot of junk!

with a target of

This is the text to keep

This should also be kept.
And this.
And this as well.

In other words, remove everything from file up to and including marker A (example of marker: 9), and also remove everything after and including marker B (example of marker: 10). Length and contents of the segments Before, Text and After is varying.

What's the easiest way to do this? Can I use awk or sed for this, despite the fact that I am looking not at lines and the positions are not fixed to specific line numbers?

https://redd.it/1g6eflf
@r_bash

r_bash

16 Oct 2024 10:15

'=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

r_bash

15 Oct 2024 22:15

Still Drowning

I am the Missing Alias guy from yesterday. everytime I try to post here with the link to the old post it gets removed.


I have an alias set to change "docker" to "DOCKER_DEFAULT_PLATFORM=linux/amd64 docker-compose build" from a year ago when I was working a lot with docker.

I dont want that alias to exist anymore. but I cant find it.

Here is what i've done to find and diagnose the issue:

1. tried all terminal searches recommended by the brilliant minds of this sub (thank you all, seriously)

1a. tried every other possible search technique recommended by chatgpt (desperate, learned a lot)

2. disabled all potential 3rd party app culprits

3. booted into safe mode (this stopped the text replacement)

4. created and used a new user account on my mac (this also stopped the text replacement)

5. checked in system settings -> keyboard -> text replacement (obviously, not in there.)

6. tried using keyboard maestro (my normal text replacement strategy) to cancel it with the inverse replacement, which didn't work, because my system seems to be pasting it instead of typing the string, so KM doesn't recognize the trigger string

that tells me that the action lives somewhere in my main users home folder. What I don't understand, is why the search term "docker" or "DOCKER_DEFAULT_PLATFORM=linux/amd64 docker-compose build" return no results. I have no listed aliases other than the main two that boot with macOS (run-help=man which-command=whence)

I am beginning to think this is an issue compounded from macOS software updates since I set it up. how is it possible that there is no executable file or defined alias that returns the culprit, but the text replacement still works? I can hardly get it to work under ideal conditions!

seriously spinning my head at this one. if there are any wizards out there who can help me tackle this issue, I will be forever grateful.

https://redd.it/1g3kira
@r_bash

r_bash

15 Oct 2024 16:15

Navita - A new Directory Jumper Utility

https://i.redd.it/mgprurmfdxud1.gif



https://redd.it/1g47ujl
@r_bash

r_bash

14 Oct 2024 10:15

any help in making this animation lighter and faster but still using the tput commands to set the lines and columns is welcomed.

#!/bin/bash
LINES=$(tput lines)
COLUMNS=$(tput cols)
for (( i=0; i<$LINES; i++ ))
do
clear
for (( l=0; l<=$i; l++ ))
do
echo
done
eval printf %.1s '$((RANDOM & 1))'{1..$COLUMNS}; echo
sleep 0.01
done

https://redd.it/1g3atap
@r_bash

r_bash

14 Oct 2024 06:15

I accidentally created a bunch of ~ signs - how do I delete them?
https://redd.it/1g36w4k
@r_bash

r_bash

13 Oct 2024 17:15

Script for creating local web env

Hi, I'm practicing creating a bash script to streamline setting up a local web development environment for WordPress. Anyone care to give some feedback on this script or some best practices in general?

#!/bin/bash



# Define colors

GREEN='\033[0;32m'

YELLOW='\033[0;33m'

RED='\033[0;31m'

RESET='\033[0m'



# Ask user for project name

read -p "Enter the project name: " PROJECT_NAME



# Check if input is not empty and doesn't containt spaces

if [[ -z "$PROJECT_NAME" || "$PROJECT_NAME" =~ [[:space:]] ]]; then

echo -e "${YELLOW}Project name cannot be empty or contain spaces.${RESET}"

exit 1

fi



# Define variables

PROJECT_DIR="/var/www/html/$PROJECT_NAME"

DB_NAME="$PROJECT_NAME"

DB_USER="root"

DB_PASSWORD=""

DB_HOST="localhost"

WP_HOME="http://$PROJECT_NAME.local"

WP_SITEURL="http://$PROJECT_NAME.local/wp"

APACHE_CONF="/etc/apache2/sites-available/$PROJECT_NAME.conf"

ETC_HOSTS="/etc/hosts"



# Check if the project directory already exists

if [ -d "$PROJECT_DIR" ];

then

echo -e "${YELLOW}$PROJECT_NAME already exists. Please choose another name.${RESET}"

exit 1

fi



# Create the directory using bedrock

composer create-project roots/bedrock "$PROJECT_DIR"



# Ensure Apache can read and write to the Bedrock directory

sudo chown -R www-data:www-data "$PROJECT_DIR"

sudo find "$PROJECT_DIR" -type d -exec chmod 755 {} \;

sudo find "$PROJECT_DIR" -type f -exec chmod 755 {} \;



# Create the database

echo "Creating database $DB_NAME..."

mysql -u root -p"$MYSQL_ROOT_PASSWORD" -e "CREATE DATABASE IF NOT EXISTS $DB_NAME;"



# Create a new Apache configuration for the project

echo "Creating Apache configuration for Bedrock"

sudo bash -c "cat > $APACHE_CONF <<EOL



<VirtualHost *:80>

ServerName "$PROJECT_NAME".local

DocumentRoot "$PROJECT_DIR"/web



<Directory "$PROJECT_DIR"/web>

Options Indexes FollowSymLinks

AllowOverride All

Require all granted

</Directory>



ErrorLog /var/log/apache2/"$PROJECT_NAME"-error.log

CustomLog /var/log/apache2/"$PROJECT_NAME"-access.log combined

</VirtualHost>

EOL"



# Give www-data permissions to write to /var/log/apache2/ directory

sudo usermod -a -G adm www-data



# Enable the new site and required modules

echo "Enablind the new site and required Apache modules..."

sudo a2ensite "$PROJECT_NAME".conf

sudo a2enmod rewrite



# Add the project to /etc/hosts if it doesn't exist

echo "Adding $PROJECT_NAME.local to /etc/hosts..."

if ! grep -q "$PROJECT_NAME.local" /etc/hosts; then

sudo bash -c "echo '127.0.0.1 $PROJECT_NAME.local' >> /etc/hosts"

fi



# Reload Apache for changes to take effect

systemctl reload apache2



echo -e "${GREEN}$PROJECT_NAME setup completed! You can access it at http://$PROJECT_NAME.local${RESET}"

https://redd.it/1g2qdqk
@r_bash

r_bash

13 Oct 2024 08:15

probably stupid mistake

i dont know why but this dont work

printf "%d" $((RANDOM & 1)){$string}; echo

when this does

printf "%d" $((RANDOM & 1)){,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,}; echo

https://redd.it/1g2j8n0
@r_bash

r_bash

12 Oct 2024 14:15

I would like to make this less stupid but have no idea of what to use to get the same result.

echo $((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))$((RANDOM % 2))

the result is a random sequence of number of 0s and 1s

1010010101111111010010110110001011100100100010110110101001101010111001001111110010100101011100101000000011010100111000101101110001111010

https://redd.it/1g1y4i6
@r_bash

r_bash

11 Oct 2024 13:15

What boredom does to a man replicating the old TVs 'no signal' color bars in BASH
https://redd.it/1g16wrq
@r_bash

r_bash

11 Oct 2024 00:15

"sudo <command>" doesn't use system wide bash config.

I have created a system wide configuration for bash at /etc/bash.bashrc to format the prompt and source pywal colors so that I don't need to manage a separate config file for root and my user account. However, the colors are only applied when I run a command without elevated privileges. So, it works fine for my user account, and if I actually sign in as root before issuing the command; but if I were to type "sudo ls" while being signed in as my user, the text output remains completely white instead of using my color palette. Can anyone in here explain this behavior and would you be willing to tell me what I need to do to get it working correctly? Here are the contents of my /etc/bash.bashrc:

/etc
$ cat bash.bashrc
# If not running interactively, don't do anything
[ $- != *i* ] && return

# Grab colors from pywal
(cat /home/ego/.cache/wal/sequences &)
source /home/ego/.cache/wal/colors-tty.sh

# Prompt
PS1='\n\w\n\$ '

# Enable color output
alias ls="ls --color=auto"

https://redd.it/1g0ujfr
@r_bash

r_bash

10 Oct 2024 16:15

My ASCII graphics basic demo engine in BASH language: ISObash.
https://redd.it/1g0jaqj
@r_bash

r_bash

10 Oct 2024 12:15

A Bash Script To Display Animated Christmas Tree In Terminal
https://redd.it/1g0f2jc
@r_bash

r_bash

09 Oct 2024 18:15

Avoid passing arguments to function until all items have been looped through ?

Hi,

I have the below part of a script which gets information from a system which the user inputs.

function rrupreparation ()
{
kubeworker=$1
charu=2024
timez=3

if -z $(ssh -q $kubeworker ssh -q $rruaddr cat /etc/benetel-rootfs-version)
currver=$(ssh -q $kubeworker ssh -q $rruaddr cat /etc/benetel-rootfs-version)
then
if [ $currver == $upgradever ]
then
echo "$rruaddr UPGRADED"
else
echo "$rruaddr NOT UPGRADED"
fi
fi
}

function rruchecks ()
{
kubeworker=$1
rruaddr=$2

if -z $(ssh -q $kubeworker ssh -q $rruaddr cat /etc/benetel-rootfs-version)
currver=$(ssh -q $kubeworker ssh -q $rruaddr cat /etc/benetel-rootfs-version)
then
if [ $currver == $upgradever ]
then
stat="(U)"
tval=TXMeanPower
else
stat="(NU)"
tval=tssi
fi
fi
echo "$stat | $currver | $kubeworker | $rruaddr
rrupreparation $kubeworker
}

function findnodes ()
{
findnodes1=1
for kubeworkers in $allkubes;
do
kubeworker=$( echo $kubeworkers | cut -c 6- )
echo $kubeworker
done
read -p "Find RRU in Worker : " kubeworker
for rruaddr in $(ssh -q $kubeworker arp -n | grep 10.42.8 | grep ether | awk '{print $1}')
do
rruchecks $kubeworker $rruaddr
done
}

findnodes

Script output once run

bai-ran-cluster-worker0
bai-ran-cluster-worker1
bai-ran-cluster-worker2
bai-ran-cluster-worker3
bai-ran-cluster-worker4
bai-ran-cluster-worker5
bai-ran-cluster-worker6

Find RRU in Worker : bai-ran-cluster-worker3 <--- User inputs any name from the above list

So in this case the user input is passed as arguments from findnodes function to rruchecks function which then checks the system, and gives the below result.

(NU) | RAN650-3V0.8.2patch2 |
NOT UPGRADED
(NU) | RAN650-3V0.8.2patch2 |
NOT UPGRADED
(NU) | RAN650-3V0.8.2patch2 |
NOT UPGRADED10.42.8.3510.42.8.3510.42.8.3610.42.8.3610.42.8.3710.42.8.37

In the above result the 1st line is the expected, the 2nd line is a result of the argument received in rruchecks being passed on to rrupreparation function.

How can I not pass the user input from rruchecks to rrupreparation until all systems have been checked in rruchecks ?

https://redd.it/1fzu7as
@r_bash

r_bash

06 Oct 2024 21:15

How are if, case, etc implemented internally?

I was thinking about it and I realized I had no idea- how do if, for, while, case, etc, all control the execution of separate commands on other lines? For example


if [ "$thing" == "blah" ]; then
echo "How does it know to not run this command if thing is not blah??"
fi

Is this something only builtin commands have the power to do? Or could if, case, etc, theoretically be implemented as external programs?

https://redd.it/1fxnch3
@r_bash