Collection Scrips
Hey Guzs , I am collection bash scripts that shortens the tasks
here is contribution link Bash-Baby
https://redd.it/18wm2p0
@r_bash
Script to relink broken alias files with new path?
Hi, is there any way to get this done? I have no experience with scripting, but together with ChatGPT I failed massively to get this done in Terminal on OSX (10.14.6)
From a stupid user perspective:
1. Open Finder-GUI to choose Folder (including subfolder) for damaged/unliked Alias files
2. Check those files for unlinked Aliases.
3. Open Finder-GUI to choose Folder (incl. subfolders) which contains the new destination of the original files.
4. Do the work - restore all Alias links with the new original paths (only for those files, which had a damaged Alias of course).
I cannot find a software that claims to do that on OSX. I am so desperately in need of this function because I work with a software which relies on Aliases for it's internal file management system, and after I did some major reorganisation of my hard drives, I'm left with hundrets of unlinked Aliases..... :(
https://redd.it/18w0sog
@r_bash
Generating PNG files with text and "colorful emojis"
I know how to do it with a wide choice of options, but my emojis are all black and white and flat.
I want to get them colorful like on my phone.
I have a transcript of a WA chat. I have written code that converts the entire conversation into audio. Now I want to create a video to go with it, containing the actual messages sent back and forth including the emojis, and I really need them to be in color. For reasons!
​
Edit: After searching the depths of the web, I found a tool in imagemagick called Pango that supports this in current versions. I will test it out over the weekend and revert.
https://redd.it/18tku9y
@r_bash
license-generator: a bash script that will generate license for your next open source project
Just wrote this shell script which can generate license files. It uses Github's API to fetch license files and make modifications by adding name of project author & year to it. Here's the Github link.
Hadn't written in bash for a long time now, I would love to hear you guys' thoughts on the code. Thanks in advance!
https://redd.it/18ubien
@r_bash
Identifying and then moving folders with only zero-length files?
I have been trying to use Mac Automator with bash shell scripts to assist with some time consuming file management. One part of the workflow has got me stuck. I've tried asking ChatGPT which has proposed some code, but it either doesn't work at all, or works with errors. Grateful for any advice.
This is my situation:
* I have output\_directory that is full of folders. These folders contain files and sometimes also have multiple layers of sub-folders with files within.
* As part of a space-saving and depulication-prevention workflow, some files have been truncated to 0kb while preserving filename and location. This is done using the Mac terminal command: "find . -type f -exec truncate -s 0 {} \\;"
* I want to identify folders that are comprised ONLY of 0kb files (and any associated sub-folders) and move these entire folders to empty\_folders\_directory. File structure within the moved folder should be maintained.
* If a folder has a mix of 0kb files and non-0kb files the folder should remain in output\_directory.
I'm not quite sure why the code(s) I've tried haven't worked e.g.:
# Check if the folder contains only empty files
if [ -z "$(find "$output_directory/$(basename "$folder")" -mindepth 1 -type f -exec test -s {} \;)" ]; then
# Move the folder to the !empty_folders directory
mv "$output_directory/$(basename "$folder")" "$empty_folders_directory"
echo "Moved $folder to $empty_folders_directory"
e.g.
# Check if there are non-zero-length files within the folder (including sub-folders)
zero_length_files=$(find "$output_directory/$(basename "$folder")" -type f -size +0c)
if [ -z "$zero_length_files" ]; then
mv "$output_directory/$(basename "$folder")" "$zero_kb_directory"
echo "Moved $folder to $zero_kb_directory"
And this example where ChatGPT did this step of the process as a function within an earlier part of the workflow that sorts folders depending on file-extensions present on folder contents:
#!/bin/bash
input_directory="/Users/rj/autotest/testinputdirectory"
output_directory="/Users/rj/autotest/testoutputdirectory"
empty_folders_directory="/Users/rj/autotest/testoutputdirectory/!empty_folders"
# Function to check if a folder and its sub-folders contain only empty files
check_empty_folder() {
local folder="$1"
# Check if the folder contains only empty files
if [ -z "$(find "$folder" -type f -exec test -s {} \;)" ]; then
return 0 # Folder contains only empty files
else
return 1 # Folder contains non-empty files
fi
}
# Loop through each folder in the input directory
for folder in "$input_directory"/*; do
# Check if the folder contains files with ".downloading" or ".prog" extensions
if [ -n "$(find "$folder" -type f \( -name "*.downloading" -o -name "*.prog" \))" ]; then
echo "Skipping $folder"
else
# Move the whole folder to the output directory
mv "$folder" "$output_directory"
echo "Moved $folder to $output_directory"
# Check if the folder and its sub-folders contain only empty files
if check_empty_folder "$output_directory/$(basename "$folder")"; then
# Move the folder to the !empty_folders directory
mv "$output_directory/$(basename "$folder")" "$empty_folders_directory"
echo "Moved $folder to $empty_folders_directory"
fi
fi
done
I've tried the above as well as lots of variants. They either haven't worked at all (i.e. empty\_folders\_directory has nothing it it when it should); or have worked incompletely e.g.: some folders haven't been moved; or contents of folders end up in the root of empty\_folders\_directory (which should never be the case).
Any pointers mucha appreciated.
Thanks
https://redd.it/18v4vbt
@r_bash
Personal Website in Bash style
https://www.babbev.com/
https://redd.it/18ve22k
@r_bash
Use Markdown_Exec to interactively select and execute fenced code blocks in markdown files.
The ["Markdown_Exec (MDE)"](https://github.com/fareedst/markdown_exec) application is a tool for executing `bash` code blocks extracted from Markdown (MD) documents. MDE operates in a Ruby and Ubuntu environment, employing Bash for script execution.
**Platform Specifications:**
- **Base Platform:** Ruby for Ubuntu systems.
- **Shell Integration:** Incorporates Bash for executing scripts.
- **Configuration and Metadata Management:** Utilizes YAML for managing configuration and metadata.
- **User Interface:** Boasts a terminal interface with ANSI colors for enhanced readability and engagement.
**Core Functionalities:**
1. **LLM Output Integration:** MDE adeptly reads MD files from LLMs, focusing on identifying and processing `bash` fenced code blocks.
2. **Document Processing and Menu Interface:** Transforms MD text into an accessible format. It distinguishes fenced code blocks, converting them into interactive menu items akin to hyperlinks for straightforward navigation.
3. **Interactive User Experience:** Offers keyboard navigation within the menu, enabling users to execute desired blocks by selecting relevant menu items.
4. **Script Execution and Output Display:** Executes chosen scripts and presents outputs, utilizing ANSI colors for distinction and emphasis. The menu dynamically updates to reflect changes post-execution.
5. **Application Use Cases:** Suited for executing automated scripts from LLM recommendations, serving as an interactive educational platform, and assisting developers in rapid prototyping.
6. **Automated Execution via Command Line Arguments:**
- MDE supports automated operation by specifying the document and block names in command-line arguments.
- Designated blocks are executed in order, encompassing navigation and execution within new documents accessed via links or imports.
- When block names are specified, MDE automatically concludes operations post-execution, optimizing batch processes and automation.
**Extended Functionalities:**
1. **Block Naming and Dependencies:**
- Fenced code blocks are identified by type (`bash`) and unique names for effortless referencing.
- MDE accommodates dependencies among code blocks, facilitating execution of prerequisite scripts before the target script.
2. **Code Block Reusability and Document Navigation:**
- **@import Directive:** MDE features an "@import" directive to boost code reusability, allowing the insertion of blocks from other documents at the directive's location, fostering modular coding.
- **Link Block Type:** MDE integrates a "link" block type for seamless document navigation. Execution of this block shifts focus to the specified file, as shown below:
```link :go_to_menu
file: menu.md
```
**Customization and Configuration:**
- MDE allows extensive customization, including numerous options for matching source document text, formatting, and coloring output, and personalizing the MDE interface.
- Users can configure MDE settings via configuration files, environment variables, program arguments, and within markdown documents.
**Configuration Sources:**
1. **Environment Variables:** MDE reads the current environment, including configuration in the current and child shells and the current command.
2. **Configuration Files:** MDE accommodates configurations in all shells and supports a dedicated `.mde.yml` file in the current folder, or a specified YAML file.
3. **Program Arguments:** Users can set options directly through command arguments.
4. **Opts Fenced Code Blocks:** MDE recognizes configuration in `opts` blocks, applying settings when the document is loaded or blocks are executed.
**Example Markdown Document:**
These blocks illustrate the use of named and dependent `bash` code blocks and the `link` block type.
```bash :initialize_environment
# Initial environment setup commands
echo "Initializing environment..."
```
```bash :data_processing +initialize_environment
First script with bash
Hey everyone,
I am trying to write a program that calculates the distance between two amino acids in a peptide sequence. I am stuck on an if statement to check if a user's choice of amino acid is found among the amino acid sequence. I know python has a string index like str1[1:n+1\]. But how do I use bash to check if the user's input is among the characters of a string.
​
Code:
​
echo "Enter your peptide sequence: " #To know what sequence to work with from the user
read $peptide_sequence #To sequence as a variable
​
echo "Select atom #1" #to prompt the user to pick an atom among the sequence they selected
read $atom1_select
​
echo "Select atom #2" #same prompt for the next atom
read $atom2_select
\#below I am trying to calculate the distance between the two atoms in the sequence
for amino_acid in ${peptide_sequence:0}
do
if [ $atom1_select==${peptide_sequence:0}\];
then
echo "Atom#1 is $atom1_select"
elif[ $atom2_select==${peptide_sequence:0}\];
then
echo "Atom#2 is $atom2_select"
else
echo "Select an atom from your peptide sequence"
fi
done
https://redd.it/18rpdrx
@r_bash
Help with find and exec function
I am trying to find some images and process them but i am not familiar with bash scripting
https://preview.redd.it/i1dk1gacz88c1.png?width=1717&format=png&auto=webp&s=8a430baf7e70791adefc3c22cb3f1eed1a88a787
https://redd.it/18pvkw5
@r_bash
Writing my first bash script -- looking for hints
Hi everyone, I hope you are all doing great!
The idea: I want to create a script to move all my screenshots from my desktop to a folder I called Screenshots.
What I did:
I needed a way to grep/find the screenshots on my desktop so I had the following
#SCREENSHOT=$(grep -lR "Screenshot" --include="2023" $DESKTOP)
SCREENSHOT=$(find Screenshot.png)
then I wanted to do a simple mv to my new folder
mv $SCREENSHOT Screenshots
The problem:
I realized a screenshot filename is written as follows: Screenshot 2023-XX-XX at XX.XX.XX
When I send it to mv it interprets this filename as 4 different strings. So it thought to use "tr" to remove the whitespaces like this example... it doesn't work at all.
NAME="Screenshot 2023-12-18 at 21.03.25"
VALUE=$(echo $NAME | tr ':space:' '-')
mv $VALUE Screenshots
This doesn't work because VALUE (Screenshot-2023-12-18-at-21.03.25) doesn't exists. so I need to rename my screenshot when it is on my desktop and then use the mv to its new destination. but how can I do so as mv sees my screenshot filename as 4 distinct elements?
btw-- i m on macos
https://redd.it/18pbz0t
@r_bash
First bash script
https://github.com/safesintesi/transient-prompt-bash
https://redd.it/18p4u6y
@r_bash
inserting a file into a another one after/before a matching pattern with and without new lines added
I'd like to update my CHANGELOG.md file by extracting automatically the changes from the repo, using the glab program.
I also would like to retain the format of my CHANGELOG.md so I'd like to insert the output of glab into the CHANGELOG.md after a certain string matching, but unfortunately I'm not able to insert it after a new line.
I've tried the following:
1221 Dec/22 - 01:55:31 sed '/v\d+\d+\d+/i changes.md\n' CHANGELOG.md
1222 Dec/22 - 01:58:54 sed '/## v\d+\d+\d+.*$/i changes.md\n' CHANGELOG.md
1223 Dec/22 - 01:59:05 sed '/## v\d+\d+\d+.*$/i changes.md\n' CHANGELOG.md | less
1224 Dec/22 - 01:59:40 sed '/semver/a \nchanges.md\n' CHANGELOG.md | less
1225 Dec/22 - 02:00:00 sed '/semver/a \n changes.md\n' CHANGELOG.md | less
1226 Dec/22 - 02:00:17 sed '/semver/a \n/a changes.md\n' CHANGELOG.md | less
1227 Dec/22 - 02:01:15 sed '/semver/r changes.md' CHANGELOG.md | less
1228 Dec/22 - 02:01:31 sed '/semver/r \n changes.md' CHANGELOG.md | less
1229 Dec/22 - 02:02:03 sed '/semver\n/r changes.md' CHANGELOG.md | less
1230 Dec/22 - 02:02:20 sed '/semver.org\/\n/r changes.md' CHANGELOG.md | less
1231 Dec/22 - 02:02:30 sed '/semver/r changes.md' CHANGELOG.md | less
1233 Dec/22 - 02:05:00 sed '/semver/a\nchanges.md' CHANGELOG.md | less
1234 Dec/22 - 02:06:55 sed '/semver/a\\\\\nchanges.md' CHANGELOG.md | less
1235 Dec/22 - 02:07:08 sed '/semver/a\\\nchanges.md' CHANGELOG.md | less
1236 Dec/22 - 02:07:18 sed '/semver/a\\nchanges.md' CHANGELOG.md | less
1237 Dec/22 - 02:08:18 sed -e '/semver/a\\\\\nchanges.md' CHANGELOG.md | less
1238 Dec/22 - 02:08:34 sed -e '/semver/a\nchanges.md' CHANGELOG.md | less
1239 Dec/22 - 02:08:49 sed -e '/semver/a \nchanges.md' CHANGELOG.md | less
1240 Dec/22 - 02:09:04 sed -e '/semver/a \\nchanges.md' CHANGELOG.md | less
1241 Dec/22 - 02:09:23 sed -e '/semver/a \\nchanges.md' CHANGELOG.md | head -n 20
1242 Dec/22 - 02:09:33 sed -e '/semver/a \\n changes.md' CHANGELOG.md | head -n 20
1243 Dec/22 - 02:09:42 sed -e '/semver/a \\\\\n changes.md' CHANGELOG.md | head -n 20
1244 Dec/22 - 02:09:50 sed -e '/semver/a \\\n changes.md' CHANGELOG.md | head -n 20
1245 Dec/22 - 02:12:33 sed '/semver/{r changes.md a\}' CHANGELOG.md | head -n 20
1246 Dec/22 - 02:14:06 sed '/semver/{\n e cat changes.md}' CHANGELOG.md | head -n 20
1247 Dec/22 - 02:14:18 sed '/semver/{e cat changes.md}' CHANGELOG.md | head -n 20
1248 Dec/22 - 02:14:47 sed '/semver/e cat changes.md' CHANGELOG.md | head -n 20
1249 Dec/22 - 02:15:13 sed '/semver/r \n e cat changes.md' CHANGELOG.md | head -n 20
1250 Dec/22 - 02:15:28 sed '/semver/r \n /e cat changes.md' CHANGELOG.md | head -n 20
1270 Dec/22 - 15:28:05 sed '/semver\.org\/\n/r changes.md' CHANGELOG.md | head -n 20
1272 Dec/22 - 15:28:13 sed '/semver\.org\/\n/r changes.md' CHANGELOG.md | head -n 20
semver.org line, nothing seemed to work. Also tried with Bard and ChatGPT...sed, I just thought it would have been the right tool for the job.
awk matching pattern and print until the next double empty blank line?
how can i print match string until the next double empty line?
# alfa
AAA
BBB
CCC
# bravo
DDD
EEE
FFF
# charlie
GGG
HHH
III
This command works but it only for the first matching empty line.
I need something that will match the next double empty line
awk '/bravo/' RS= foobar.txt
# bravo
DDD
EEE
Wanted final output
# bravo
DDD
EEE
FFF
https://redd.it/18om72p
@r_bash
Different behaviour in running script through bash and sh
This might be very naive.
I was testing something when I noticed this behaviour.
My script test.sh contains the following line-
source .bashrc
When I run it like bash test.sh it works but when I run it like sh test.sh, it gives the error -
sample.sh: line 1: source: .bashrc: file not found
I wanted to know the reason for it.
https://redd.it/18o95v0
@r_bash
Bash script as a service - but able to display STDOUT on request?
Hi guys
I have written a series of Bash scripts that run as services on my home server.
But is there a way, I can get the running service to come to the foreground and display STDOUT (and maybe evend STDERR) as if it was running as a standard script.
Like when I run a script in Screen, I can always just type screen -r (pid) and it pops to the front again, then CTRL+A D and it goes back to the background. I want to do something like this but as a service?
Edit: Reading the man page for screen. I see there is an option -S that allows me to name a screen. If I t was to put under exec in my service file: screen -S nameofservice ./nameofscript.sh would that run the service in a screen session then I can use screen -r nameofservice to bring it to the foreground.
https://redd.it/18ni4n6
@r_bash
Pipe output to a file with auto incremented name?
I like doing > temp-file.txt for output of some commands that I might need later.
This has progressed to > ../tmp/2024-01-01-001.txt, but writing the timestamps and index numbers gets tedious.
Is there a utility or script that would let me do just > keep or something similar? Seems like a common use case but after a couple of google searches I didn't find anything.
https://redd.it/18w3vt5
@r_bash
forkrun: the fastest pure-bash loop parallelizer ever written -- looking for "beta testers"
[LINK TO GITHUB REPO WITH CODE](https://github.com/jkool702/forkrun/tree/forkrun-v2_RC)
***
A year ago I started working on `forkrun` - a pure bash (well, almost pure bash) function that works to parallelize loops in much the same way that `xargs -P` and `parallel` do. 1 year, nearly 400 github commits, 1 complete rewrite, and I imagine several hundred hours worth of optimizing later, I do believe that `forkrun` (v2.0) is finally ready to be released.
Before I officially release it, Id love it if a few people would try it out and report any bugs they encounter. Ive thoroughly tested it on my Fedora 39 rig running bash 5.2.x, but other distros and older versions of bash is largely untested (NOTE: min bash version capable of running this is 4.0 due to the use of coprocs) .
Thanks in advance to anyone willing to test it out for me!
***
**USAGE**
There is detailed info in the github readme, but heres some brief usage instructions:
First, source `forkrun.bash` by running one of the following:
. <(curl https://raw.githubusercontent.com/jkool702/forkrun/forkrun-v2_RC/forkrun.bash)
or
wget https://raw.githubusercontent.com/jkool702/forkrun/forkrun-v2_RC/forkrun.bash
. ./forkrun.bash
or
git clone https://github.com/jkool702/forkrun.git --branch=forkrun-v2_RC
. ./forkrun/forkrun.bash
Then use it like you would `xargs`. The base (no flags) `forkrun` is roughly equivalent to `xargs -P $(nproc) -d $'\n'`. After sourcing it, you can display the full usage help (that described the available flags to tweak `forkrun`'s behavior) by running
forkrun --help=all
***
**EXAMPLE**
To compute the `cksum` of every file under the current directory, you would run
find ./ -type f | forkrun cksum
***
P.S. and yes, it really is that fast. My main speed testing has been computing 11 different checksums on ~500,000 mostly small files saved on a tmpfs ramdisk with a total combined size of ~19 gb. The speedtest code + results are [in the github repo](https://github.com/jkool702/forkrun/blob/forkrun-v2_RC/forkrun.speedtest.bash), but to summarize:
* on average it was 70% faster than `xargs -P $(nproc) -d $'\n'`, which is the fastest loop parallelizer I know of (not counting `forkrun`). For the lighter weight checksums like `cksum` and `sum -s` is was closer to 3x faster. Note that this is the fastest implementation of `xargs` (it isnt being crippled by using `-l 1` or `-n 1`), and `xargs` itself is a compiled C binary. Thats right, `forkrun` parallelizes loops faster than the fastest compiled C loop parallelizer I could find.
* on average it is \~7x as fast as `parallel -m`. For the lighter weight checksums like `cksum` and `sum -s` is was >18x faster.
* on my hardware, `forkrun` was computing the lightweight checksums (`cksum` and `sum -s`) on all ~19 gb worth of ~500,000 files in about 1.1 seconds (outputting to `wc -l`), not printing to the terminal)
As such, In can all but guarantee this is the fastest loop parallelizer written in bash that has ever been written. See the github readme if you are curious what makes `forkrun` so fast.
Note: "fast" is referring to "wall clock time". In terms of CPU time `xargs` is a bit better (though not *that* much), but forkrun parallelizes things so well it is faster in "real" execution time.
EDIT: fixed formatting issue.
https://redd.it/18sfjtz
@r_bash
Local -n vs declare -n
Whats the difference between local -n and declare -n when used inside the function?
Bash manual doesnt explain the difference when -n attribute is used for both.
https://redd.it/18to3jj
@r_bash
Copy file to a copied structure
I have a pictures folder on my Synology NAS, and within that are a number of albums, each with a set of photos and videos.
I occasionally want to share select photos with family by copying the files, but I want to keep the album structure so it's still viewable i.e. pictures/nans/70thbirthday/, or pictures/parents/10thanniversary/ etc. In reality the files are nested deeper than this, so I don't want to create the folders in target manually. As I don't want to copy the whole folder full of files, I was hoping to copy the file I want to share to a temporary folder, and then a script could check the source folders for the original location and replicate that in the family shared folder.
Source would be /pictures/nans/70thbirthday/img_20220111115326.jpg where there could be 100's of other pictures.
I would want to copy file to /temp/pictures/img_20220111115326.jpg
Then a bash script would find the location of the original file in the /pictures/ folder and recreate the folder structure to /shared/events/ i.e. /shared/events/nans/70thbirthday/
I've been banging my head with find and grep but I don't really know what I'm doing, so haven't even been able to successfully extract the folder from any output.
I had been trying to use find '/volume2/pictures/albums/' -type d -name "*img_20220111115326.jpg*" without success.
Should I be using find, or is there a better command to use to set the original folders to a variable?
https://redd.it/18uhcf5
@r_bash
How can i create a new file and run it afterwards without having to chmod it every time?
ive read i can add umask 011 in my zshrc but im still getting the permission issue even though im root.
https://redd.it/18ux7jz
@r_bash
# Data processing commands requiring initialized environment
echo "Processing data..."
```
```link :go_to_menu
file: menu.md
```
In this example, the `data_processing` block relies on `initialize_environment`. When selecting `data_processing`, MDE first executes `initialize_environment` to ensure proper setup before proceeding. The `link` block type enables navigation to `menu.md`, offering a structured and interconnected document system. These attributes make MDE an effective tool for managing complex script sequences and various applications. The automated execution feature via command-line arguments further enhances MDE's role in batch processing and workflow automation.
https://redd.it/18r1ygi
@r_bash
Use MarkdownExec to interactively select and execute fenced code blocks in markdown files.
The ["MarkdownExec (MDE)"](https://github.com/fareedst/markdownexec) application is a tool for executing `bash` code blocks extracted from Markdown (MD) documents. MDE operates in a Ruby and Ubuntu environment, employing Bash for script execution.
**Platform Specifications:**
- **Base Platform:** Ruby for Ubuntu systems.
- **Shell Integration:** Incorporates Bash for executing scripts.
- **Configuration and Metadata Management:** Utilizes YAML for managing configuration and metadata.
- **User Interface:** Boasts a terminal interface with ANSI colors for enhanced readability and engagement.
**Core Functionalities:**
1. **LLM Output Integration:** MDE adeptly reads MD files from LLMs, focusing on identifying and processing `bash` fenced code blocks.
2. **Document Processing and Menu Interface:** Transforms MD text into an accessible format. It distinguishes fenced code blocks, converting them into interactive menu items akin to hyperlinks for straightforward navigation.
3. **Interactive User Experience:** Offers keyboard navigation within the menu, enabling users to execute desired blocks by selecting relevant menu items.
4. **Script Execution and Output Display:** Executes chosen scripts and presents outputs, utilizing ANSI colors for distinction and emphasis. The menu dynamically updates to reflect changes post-execution.
5. **Application Use Cases:** Suited for executing automated scripts from LLM recommendations, serving as an interactive educational platform, and assisting developers in rapid prototyping.
6. **Automated Execution via Command Line Arguments:**
- MDE supports automated operation by specifying the document and block names in command-line arguments.
- Designated blocks are executed in order, encompassing navigation and execution within new documents accessed via links or imports.
- When block names are specified, MDE automatically concludes operations post-execution, optimizing batch processes and automation.
**Extended Functionalities:**
1. **Block Naming and Dependencies:**
- Fenced code blocks are identified by type (`bash`) and unique names for effortless referencing.
- MDE accommodates dependencies among code blocks, facilitating execution of prerequisite scripts before the target script.
2. **Code Block Reusability and Document Navigation:**
- **@import Directive:** MDE features an "@import" directive to boost code reusability, allowing the insertion of blocks from other documents at the directive's location, fostering modular coding.
- **Link Block Type:** MDE integrates a "link" block type for seamless document navigation. Execution of this block shifts focus to the specified file, as shown below:
```link :gotomenu
file: menu.md
```
**Customization and Configuration:**
- MDE allows extensive customization, including numerous options for matching source document text, formatting, and coloring output, and personalizing the MDE interface.
- Users can configure MDE settings via configuration files, environment variables, program arguments, and within markdown documents.
**Configuration Sources:**
1. **Environment Variables:** MDE reads the current environment, including configuration in the current and child shells and the current command.
2. **Configuration Files:** MDE accommodates configurations in all shells and supports a dedicated `.mde.yml` file in the current folder, or a specified YAML file.
3. **Program Arguments:** Users can set options directly through command arguments.
4. **Opts Fenced Code Blocks:** MDE recognizes configuration in `opts` blocks, applying settings when the document is loaded or blocks are executed.
**Example Markdown Document:**
These blocks illustrate the use of named and dependent `bash` code blocks and the `link` block type.
```bash :initializeenvironment
# Initial environment setup commands
echo "Initializing environment..."
bash :dataprocessing +initializeenvironment Читать полностью…
The order of the $PATHs matters! Depends on what? And how can I change it?
We are two Debian users, both with the same \~/.profile and \~/.bashrc files with defaults (no changes in them). The only additional line is this in the \~/.bashrc file:
​
export PATH=$PATH:$(xdg-user-dir USER)/.local/bin
By performing the command echo $PATH I get this:
​
/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/home/ivan/.local/bin
and him have this:
​
/home/sz/.local/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/home/sz/.local/bin:/home/sz/.local/bin
​
The result is that my binary symlinked in \~/.local/bin is working, not for him.
If him changes the line in its \~/.profile file from PATH="$HOME/.local/bin:$PATH" to PATH="$PATH:$HOME/.local/bin" the result is similar to the mine:
​
/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/home/sz/.local/bin
​
and the symlink is working as expected.
​
Why all this happens? Why him have to edit the \~/.profile file to reach my results?
https://redd.it/18q8r4q
@r_bash
Bash, printf formatting: accented characters ruin the formatting
Let's take the following code. The first command is echo, just to set the stantards, and the following commands use printf to format the text, as if there was a box around the text:
#!/bin/bash
text=Security
echo " ......................................................"
printf "%5s %-50s %-5s\n" "." "" "."
printf "%5s %-50s %-5s\n" "." "${text}" "."
printf "%5s %-50s %-5s\n" "." "" "."
This is the output:
......................................................
. .
. Security .
. .
Now let's change the text to Portuguese: "Segurança" instead of "Security", mind the "ç":
#!/bin/bash
text=Segurança
echo " ......................................................"
printf "%5s %-50s %-5s\n" "." "" "."
printf "%5s %-50s %-5s\n" "." "${text}" "."
printf "%5s %-50s %-5s\n" "." "" "."
This is the new output:
......................................................
. .
. Segurança .
. .
The dot at the end of the line of "Segurança" is out of place.
The same behavior can be seen with box drawing characters: take a look at what I had to do to achieve the same formatting (%7s instead of %5s), all the definitions in printf had to be changed:
#!/bin/bash
text=Security
echo " ┌────────────────────────────────────────────────────┐"
printf "%7s %-50s %-5s\n" "│" "" "│"
printf "%7s %-50s %-5s\n" "│" "${text}" "│"
printf "%7s %-50s %-5s\n" "│" "" "│"
To get:
┌────────────────────────────────────────────────────┐
│ │
│ Security │
│ │
I was OK with that, with weird trial and error values to draw the box, but when it comes to text, that can contain accented characters or not, in lots of lines, coming from variables, it is an issue.
Thank you in advance!
https://redd.it/18ph0a5
@r_bash
Tree command include contents of a zip file
Is it possible to create a tree of all files in a folder including the contents of zips? Thanks in advance
https://redd.it/18pav4d
@r_bash
Debugging Bash like a Sire - And how to get a StackTrace from a bash script
https://blog.brujordet.no/post/bash/debugging_bash_like_a_sire/
https://redd.it/18p2zr0
@r_bash
Failing assert_success even though script runs successfully and produces correct output
This is probably a very trivial thing, but I just don't know what is happening. I am new to bash (but not completely new to programming), and I am trying to solve a bunch of exercises on [exercism.org](https://exercism.org).
I was solving [this](https://exercism.org/tracks/bash/exercises/two-fer) problem, and for some reason, my script fails the bats test. I am asked to output "One for you, one for me." when script is run with no args. And output the same thing except I'll replace "you" with whatever name I got as an arg. Below is the error message that I get.
```
1..5
not ok 1 no name given
# (from function `assert_success' in file bats-extra.bash, line 409,
# in test file two_fer.bats, line 24)
# `assert_success' failed
#
# -- command failed --
# status : 1
# output : One for you, one for me.
# --
#
ok 2 a name given # skip
ok 3 another name given # skip
ok 4 handle arg with spaces # skip
ok 5 handle arg with glob char # skip
```
And this is my script:
```
#! /bin/bash
[[ -z $1 ]] && echo "One for you, one for me."
[[ -n $1 ]] && echo "One for $1, one for me."
```
https://redd.it/18ooh6i
@r_bash
interrupt running bash script while keys are pressed
hi, bash scripting noob here looking for help finding a graceful way to interrupt a running script which uses ydotool to simulate keypresses.
I've written a script that looks something like this:
#!/bin/bash
while true; do
YDOTOOLSOCKET="$HOME/.ydotoolsocket" ydotool key 30:1
sleep 30
YDOTOOLSOCKET="$HOME/.ydotoolsocket" ydotool key 30:0
sleep 1
done
the idea being that ydotool holds a key down, releases, then loops back to keep doing that indefinitely
while I can ctrl-c to stop the script, doing that does not seem to release the keypress, so even after the script stops running that key isn't usable unless I sudo pkill ydotoold.
does anyone know of a way to include a keybind in the bash script to interrupt the loop and release all pressed keys or pkill ydotoold directly?
sorry I'm definitely overlooking something, I bet there's a really simple way to do this that I'm missing!!
as an aside, the YDOTOOL_SOCKET bit is a result of the ydotoold daemon being started with the command sudo -b ydotoold --socket-path="$HOME/.ydotool_socket" --socket-own="$(id -u):$(id -g)" to allow the user to run the script without root permissions. does anyone happen to know how this actually works? does the socket path need to be set before every ydotool command or can I just put it once in the script and then ydotool will figure it out?
thanks!
https://redd.it/18oe2gd
@r_bash
Special characters in password
Hi there,
I have a situation where I an running bash script in data pipeline orchestrator. Script retrieves password from orchestrator's env variable and passes it to docker run command. I am not setting the original password, it comes from external source and I do not have any influence on that. The problem is the password can contain any of special characters ' " $ or any other, for ex. #U{7TK('\\'')}4WQ@5@$8_\^uvdrt$%\^(.
So, I can not use '$password' since if password has ' in it it will be broken. I could use "$password" but then if I have $ in password it will be broken again as $ will be treated as beginning of variable.
I have tried escaping special chars with function, but nothing really worked.
The idea is to have:
function escape_chars () {
some function
}
docker run - p $(escape_chars "$password_comming_from_external_source") .....
Any ideas with this?
Thanks a lot!
https://redd.it/18o84nm
@r_bash
Was planning to use the output of a command in a bash script, but I don't know how to deal with the command behavior
I'm fiddling with motd, to be able to display some information at login.
I created this script:
#!/bin/bash
echo "OS: $(lsbrelease -s -d)"
echo "sendmail: $(sendmail -V)"
Fantasizing about this result:
OS: Ubuntu 22.04.3 LTS
sendmail: sSMTP 2.64 (Not sendmail at all)
But got this instead:
OS: Ubuntu 22.04.3 LTS
sSMTP 2.64 (Not sendmail at all)
sendmail:
Then I tried to assign the result of "sendmail -V" to a variable and get it printed:
#!/bin/bash
echo "OS: $(lsbrelease -s -d)"
sendm=$(sendmail -V)
echo "sendmail: ${sendm}"
But it didn't work:
OS: Ubuntu 22.04.3 LTS
sSMTP 2.64 (Not sendmail at all)
sendmail:
Apparently "sendmail -V" is related only to sSMTP.
My actual point here is to learn what is going on, and if it's possible to achieve what I want with this specific kind of output. I kind of see what is going on, I mean, that the output is different than what I see in other commands I've dealt with before, but have no idea how to begin to understand it or to talk about it. I don't really care about displaying the version of sSMTP, it's just overall curiosity now.
UPDATE: $(sendmail -V 2>&1) did the trick, it was going to stderr and I just wouldn't find out by myself. Thank you!
https://redd.it/18n7343
@r_bash