bobbyiliev / introduction-to-bash-scripting Goto Github PK

Hi,

First thanks for book, I have been using it recently and I find it pretty handy.

The second, I think it would be useful to add some example explaining how to access to a slice of $@, in the section "Arguments" .
Something like the solution found here.

Thanks!

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Yes, my shell script is an automation script for system-wide proxy setup on linux installed machines.

I have been wandering why we at our college are not able to access the internet from within the terminal when behind a proxy server. Henceforth we had to switch between personal wifi and the college proxy every now and then.

I'd like this issue be solved by writing a few simple command from the terminal to toggle the proxy on and off.

The current way of tackling this problem is to manually comment out all the config files for whom one sets the proxy. I would like this to be automated with as minimum efforts as possible.

I HAVE THE SOLUTION DONE MYSELF!
A month ago I wrote this shell script which does the above job by just a couple commands.
To turn the proxy on enter the commands:
myproxy on
source /etc/profile.d/proxy.sh

To turn off:
myproxy off
source /etc/profile.d/unset_proxy.sh

You can check the script here

PLEASE ASSIGN ME THIS FEATURE!
I SUPPOSE THIS WILL ADD VALUE TO THE BOOK AND MIGHT SERVE A REAL LIFE PURPOSE FOR LEARNERS!

THANK YOU😇

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Error accessing last element from an array

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I'm having problem when accessing the last item from an array. I followed exactly the same as written in the book. Can someone explain me if I did something wrong? Thanks.

My script:

#!/bin/bash

my_array=("value 1" "value 2" "value 3" "value 4")

# Access item 1
echo ${my_array[1]}

# Access the last item
echo ${my_array[-1]}

# Access all the items
echo ${my_array[@]}

# Output total number of elements in the array
echo ${#my_array[@]}

Shell output:

value 2
script1.sh: line 9: my_array: bad array subscript

value 1 value 2 value 3 value 4
4

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Describe the bug

To Reproduce

Expected behavior

Screenshots

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Similar to what we have with Ibis, create the same action but for Pandoc!

For more information on the Pandoc integration, check out this PR here:

#60

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Typo in opening paragraph:
The difference between until and while loops is that the until lool will run the commands within the loop until the condition becomes true.

Change lool to loop.

dirlist=$(ls /home) =>

dirlist="blackcrack akira lost&found workshop garage office"
blacklist="lost&found garage workshop"

the way to the result
echo $result
blackcrack akira office

how become from the $dirlist i a filtering with the 3 words in the $blacklist
to a result with the rest of the words..

i have try it via oneliner :

[blackcrack@blackysgate ~/bearbeit-net]$ dirlist=$(ls /home) ; blacklist="lost&found garage workshop" ; echo $dirlist | sed 's/$blacklist//'
blackcrack akira lost&found workshop garage office
[blackcrack@blackysgate ~/bearbeit-net]$

but it works not really simply with sed.. mus i use there a loop or something over "while"

best

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You have not added the links to the chapters in the README.MD file

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I can add all the links to the content in your README.MD

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please assign me this issue for hacktoberfest 2021

Hey hi Siddhesh is here..
I made bash script which convert CSV file into VCF format.
Please give me chance to contribute, if you think this will add value to your repository.
Thank you ...

Hi, may do I the ebook chapter's 15 translation to spanish?

When Clicking the download button, it redirects to github where the book is uploaded. Some users might be not fimiliar with github so for user flexibility make it like who so ever clicks the download button it directly gets the book without getting confused.

page 49 in the Loops lesson, the main code is

#!/bin/bash

read -p "What is your name? " name

while [[ -z ${name} ]]
do
    echo "Your name can not be blank. Please enter a valid name!"
    read -p "Enter your name again? " name
done

echo "Hi there ${name}"

could be shortened to :

#!/bin/bash

read -p 'what is ur name ? ' name

if [[ -z ${name} ]]
then
        echo 'please insert some name ...'
        $0
else
        echo hello, $name
fi

and THX ❤

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Hi, firstly thanks for this book. It's awesome work but in PDF is dificult to read in cellphone while go to work.

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I finded a tool called pandoc that make epub file from md files. More info here:
https://pandoc.org/epub.html

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I think pandoc will help to build books by language when people start to translate them.

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I am requesting for a feature.

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I have been using vagrant for practicing linux. I think it is a great tool for practicing linux with various distributions and without actually installing Linux OS. You just download an vagrant-box and do 'vagrant up' , it is ready. So, I think it is great for linux practicing.

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Describe the bug

I was reading the book to revise my concepts , while revising i have noted that 008-bash array file has bug in .md file

my_array=("1""2""3""4""5")
echo ${#my_array[@]} --this will print only the first value not  the total no. of elements

Explainig Syntax error with screenshot

Correct Way of Writing 👍

echo ${#my_array}  --this will print the number of elements in my array 

Attached Screenshot (for sake of proof)

please assign this to me , i will fix accordingly ...

Thanks you ❤️

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version control is not well suited for binary files.

Would you like to include heredoc and herestrings in the redirection section?

I believe that this would be very helpful for bash scripters.

Page 27 and 28 feel a bit out of place. The section is called "Substring in Bash :: Slicing", but all the examples talk about arrays which aren't introduced until page 29. It might make more sense if the examples were changed to be based on normal strings rather than arrays, or swap the sections?

I faced a problem while making aliases i hope this note would help

(Note : deal with ~/.bashrc or ~/.zshrc according to the shell u use )

make sure first what shell do use the command below will let u know :

echo "$SHELL"

why do you have to know ..? because editing the ~/.bashrc while u use zsh and even resourcing or logging out will give no benefit since u configure a file for shell ur not currently using
commands :
if u use zsh ~> nano /.zshrc
if u use bash ~> nano /.bashrc and so on ..

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not any understand very easy englisch

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for better understanding translating in different languages

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• nothing

While you've used an MIT license for the repo, downsteam users of the pdf files won't know about it.

could we have here a Discussions Forum, to ask different questions around bash and scripts ?
For have the users a Platform here where can ask short for loop, arrays or others in bash.. how ever..
my wanted help do i now set as issue ;)

best

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I downloaded your book some time in the past. However, I don’t know when. I have no idea which release of your book I downloaded. If I want to download a new version, I can’t compare it to the version I currently have because there is nowhere in the book that has a version number.

Describe the solution you'd like

Easy — include a version number in your text. Also, a copyright or copyleft notice, or a clear statement of license, would be nice as well.

Thanks for a great book!

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