getting used and free disk space before and after rsync/trash script
Hi. Iconsider the following script:
if mountpoint -q /media/external; then
printf "Disk space before:\n"
# <usedGB>/<totalGB> Free: <freeGB>
rsync -avzP --ignore-existing --update --delete --modify-window=2 --stats --human-readable --delete --exclude={'*.db','*.tmp','recycle/'} /sambashare/ /media/external
find /sambashare/recycle -mtime +$30 -delete +
printf "Disk space after:\n"
# <usedGB>/<totalGB> Free: <freeGB>
else
exit 1
fi
the challenging part is, getting the disk space right (for me). tried.
df -ht ext4
but it outputs something like this
ilesystem Size Used Avail Use% Mounted on
/dev/nvmexxxx 21G 6.8G 13G 35% /
/dev/nvmexxxx 8.4G 2.3G 5.7G 28% /home
Can you point me to the right path ?
also, can it be done more efficiently what I am trying to achieve ? Thanks
https://redd.it/12upmle
@r_bash
Can anyone PLEASE help with this script!
When run it says : versions found then SELECT not found and Syntax error: "do" unexpected.
Can you help solve this (probable really simple error)?
​
\#!/bin/bash
\# Get the name of the song from the user
read -p "Enter the name of the song: " song_name
\# Use find to search for all versions of the song in the Music folder
song_paths=$(find /home/Music -name "$song_name*")
​
\# Print out a numbered list of the song versions and ask the user which one they want to play
echo "Versions of '$song_name' found:"
select song_path in $song_paths;
do
if [ ! -n "$song_path" \]; then
break
fi
done
\# Play the selected song using the default music player on the system
xdg-open "$song_path"
exit
https://redd.it/12txs4b
@r_bash
kube-dialog update
Hi, I've just updated kube-dialog with a filter command, you can filter namespaces and objects(pods,jobs...) with ease now, enjoy)
https://preview.redd.it/d8zv5c0jp3va1.png?width=742&format=png&auto=webp&v=enabled&s=7da1fc340ca5be8cfd2bf0ac3a709b435c3b0bc9
https://redd.it/12teich
@r_bash
DISCUSSION What if BASH could be used as a web server interpreter?
I've been BASHing for about 2 years now... it's changed my life.
The other day I was writing some code in PHP and it dawned on me, can I not find a way to run BASH as a web server interpreter?
Already I am managing SQL databases with BASH? I have used it to generate static HTML pages at regular time intervals. I have even used it to generate SVG and convert them into PDF files. It would be so nice to be able to make an index.sh rather than index.php... and I haven't yet found a problem I couldn't solve with BASH, except this?
Would like to get a discussion going and see what other people's views are, solely as a thought experiment. Would such an interpreter be practical and useful, or would it just be another dev tool in an ocean of dev tools?
No flaming please, I just want to have a righteous discussion/debate about if this sort of thing did exist now and how it would affect us as BASHers and/or the industry as a whole.
https://redd.it/12t6nnr
@r_bash
Storing a directory path as a variable, then passing it on to the 'ln -s' (symbolic link) command?
I stored directory in a variable: var=$"'/media/disk2/video/001.mp4'"
I confirmed the directory was stored with the echo command: echo $var
The directory is displayed with the quotation marks as desired.
I then tried to pass it on to ln -s: ln -s $var 001_link.mp4
I get the error message: ln: target '001_link.mp4': No such file or directory
https://redd.it/12s6aze
@r_bash
Split full path and filename into path and filename.
I am currently doing this using a for loop. There must be an easier way.
fullpathfile="/path/to/where/file/is/stored.txt"
I want path="/path/to/where/file/is/" and file="stored.txt"
https://redd.it/12rt67y
@r_bash
Interesting grep behaviour after power outage
Flagged as help but just to draw an expert opinion if you care to comment. I am can sort this out with another pass of grep.
I have many folders called say “monthA, monthB, monthC… monthZ”
Each contains numerous text files either do or do not contain the pairs of letters AA, BB,CC. I only want to keep the ones that do have them.
I started a bit of grep and pipe with this:
-v -E -l -r ‘ AA| BB| CC’ month*/ | while read line; do ram “$line”; done;
behaviour of GLOBIGNORE changed?
So far I have used GLOBIGNORE to prevent ssh-add from trying to load my public keys. My .bashrc contains (contained ...)
GLOBIGNORE="*.pub"
ssh-add ~/.ssh/id*
0644 for my *.pub files so obviously it's trying to load them.GLOBIGNORE="/home/*/.ssh/*.pub" and this helps, but I'm wondering if, when and why this changed, or am I totally on the wrong track?/*/.ssh/*.pub (which would also work for /root) and this does not match for user home directories (only /root).
how to make a script write to a permission dienied file?
I want to make a script to change the brightness of my screen, but i cant seem to get permision to write to that file. ive tryed all sorts of sudoing, even tee , but notthing works. help. Also is it possible to make this write to the file without asking for sudo password everytime i want to use it, without haveing to change the permissions for the brightness file itself. ther is a program called brightnessctl that basicly does this and i wanted to try to write my own version.
\#!/bin/bash
echo "How bright do you want me? (0-255) : "
read brightnessAmount
echo $brightnessAmount | sudo tee /sys/class/backlight/brightness
https://redd.it/12o4tr9
@r_bash
Pull variables, with specific prefix, from env and create request
I have a bunch of scripts like this one with a bunch of variables defined.
I'm looking for a way to not define all of those and perhaps pull them from the env if there's a variable prefixed with IM_.
Any suggestions on how to...
1. Pull all the variables?
2. Create the request body string?
https://redd.it/12n0jrl
@r_bash
Need help filtering the output after phrase "Only Texts:"
[SOLVED]
Edit:
#!/bin/bash
xfce4-screenshooter --region --save /home/$USER/"formula.jpg"
p2t predict -i ./formula.jpg > ./output 2>&1
sed -n '/Only texts:/,$p' /home/bob/output | grep -v 'Only te>
`This worked`
I wrote a script to execute a command and only get part of the output return out of it. But I failed, Now I need your help to make the script return output which is after the string "Only Texts:".
The Script I used it [ChatGPT helped with the selection part]
#!/bin/bash
xfce4-screenshooter --region --save /home/$USER/Pictures/Screenshots/"formula.jpg"
output=$(p2t predict -i ./formula.jpg)
out=$(echo "$output" | grep -oP 'Only texts:.*?\$\$')
echo "${out:12}"
The output I recieve if I echo `output` is
```
$ ./pic2text
[INFO 2023-04-15 11:09:48,368 select_device:104] YOLOv7 🚀 2023-4-14 torch 2.0.0+cu117 CPU
[INFO 2023-04-15 11:09:48,368 __init__:161] Use model: /home/bob/.cnstd/1.2/analysis/mfd-yolov7_tiny.pt
[INFO 2023-04-15 11:09:48,544 __init__:597]
[INFO 2023-04-15 11:09:48,682 _get_model:178] use model: /home/bob/.cnocr/2.2/densenet_lite_136-fc/cnocr-v2.2-densenet_lite_136-fc-epoch=039-complete_match_epoch=0.8597-model.onnx
[INFO 2023-04-15 11:09:48,713 _assert_and_prepare_model_files:135] use model: /home/bob/.cnstd/1.2/ppocr/ch_PP-OCRv3_det_infer.onnx
[INFO 2023-04-15 11:09:48,760 _assert_and_prepare_model_files:110] use model: /home/bob/.cnocr/2.2/ppocr/en_PP-OCRv3_rec_infer.onnx
[INFO 2023-04-15 11:09:48,825 _assert_and_prepare_model_files:135] use model: /home/bob/.cnstd/1.2/ppocr/en_PP-OCRv3_det_infer.onnx
[INFO 2023-04-15 11:09:48,866 download_checkpoints:50] use model weights.pth from path /home/bob/.pix2text/formular
[INFO 2023-04-15 11:09:48,866 download_checkpoints:50] use model image_resizer.pth from path /home/bob/.pix2text/formular
[WARNING 2023-04-15 11:09:49,419 _showwarnmsg:109] /home/bob/.local/lib/python3.9/site-packages/torch/functional.py:504: UserWarning: torch.meshgrid: in an upcoming release, it will be required to pass the indexing argument. (Triggered internally at ../aten/src/ATen/native/TensorShape.cpp:3483.)
return _VF.meshgrid(tensors, **kwargs) # type: ignore[attr-defined]
[INFO 2023-04-15 11:09:49,422 _analyze_one:338] Done. (68.7ms) Inference, (0.6ms) NMS
[INFO 2023-04-15 11:09:50,266 predict:119] In image: ./formula.jpg
Outs:
[{'position': array([[ 8, 15],
[ 459, 15],
[ 459, 110],
[ 8, 110]]),
'text': '$$\n'
'\\operatorname{d}={\\sqrt{\\left(x_{2}-\\chi_{3}\\right)^{2}+\\left(y_{2}-\\mathbf{y}_{1}\\right)^{2}}}\n'
'$$',
'type': 'isolated'}]
Only texts:
$$
\operatorname{d}={\sqrt{\left(x_{2}-\chi_{3}\right)^{2}+\left(y_{2}-\mathbf{y}_{1}\right)^{2}}}
$$
output
```
All, I want is (stuff after Only texts:)
```
$$
\operatorname{d}={\sqrt{\left(x_{2}-\chi_{3}\right)^{2}+\left(y_{2}-\mathbf{y}_{1}\right)^{2}}}
$$
```
Any help would be greatly appreciated
https://redd.it/12mrm5e
@r_bash
How do I use double quotes in a remote ssh this way?
Normally I would set the today variable like this:
today="$(date +'%m-%d-%Y %H:%M:%S')"
Since I'm doing it on a remote server I am doing it this way:
ssh -T root@192.168.1.4 << EOL
today=\$(date +'%m-%d-%Y %H:%M:%S')
echo "\$today"
EOL
But what if I wanted to use the double quotes like normal? How would I do that remotely?
https://redd.it/12m9e3x
@r_bash
a Bash script to eliminate lines in a delimited text file
Hello !
I have a file in a format like this, but bigger:
0.5 00000 aaaaa K 00000 aaaaaaa
0.5 11111 bbbbb P 11111 bbbbbbb
0.5 22222 ccccc F 22222 ccccccc
0.02 33333 ddddd G 33333 ddddddd
0.01 44444 eeeee S 44444 eeeeeee
0.01 55555 fffff S1 55555 fffffff
0.5 66666 ggggg G 66666 ggggggg
0.5 77777 hhhhh S 77777 hhhhhhh
I want to write a Bash script, that enters the file, and looks for a line that has G in the fourth column, if it's the case, it returns to the first column of that line and compares it to 0,04. If it's lower, the line should be deleted.
If a line that contains G is deleted, the script should look for the lines under, if they contain S or S1, or S2 they should be deleted also if they contain anything except that, no deletion is needed.
For that input, I should have an output like this:
0.5 00000 aaaaa K 00000 aaaaaaa
0.5 11111 bbbbb P 11111 bbbbbbb
0.5 22222 ccccc F 22222 ccccccc
0.5 66666 ggggg G 66666 ggggggg
0.5 77777 hhhhh S 77777 hhhhhhh
Thanks in advance! Have a good day.
https://redd.it/12lzfos
@r_bash
Keyboard Shortcut won't execute scripts and commands which are easily executable on terminal.
So, I installed a package called pix2tex. I wrote a script to run it and there also was a pre-written script which would launch a window as you can see here in this video
However, though the scripts and commands run perfectly fine on terminal, they won't run when they are called with a custom shortcut that I assigned them in keyboard settings.
I recorded another video to demonstrate this issue. The script which is being executed is
#!/bin/bash
xfce4-screenshooter --region --save /home/bob/Pictures/Screenshots/a.png
#only the xfce4-screenshooter command would be executed
pix2tex /home/bob/Pictures/Screenshots/a.png | sed 's/.*: //' > /home/bob/Pictures/Screenshots/a.tex
xclip -selection clipboard /home/bob/Pictures/Screenshots/a.tex
exit 0
latexocr gui without actually having to open the terminal would suffice, is there a way to use a shortcut to do the same job as I am doing in the first video?~
Yo: yet another AI-powered terminal assistant
https://redd.it/12logjr
@r_bash
Help/Direction creating a commandline AI?
I understand that their is a tool out there currently by the name of CLAI, however I'm wondering if it would be possible (as an independent project) to build/design a better command line artifical intelligence similar to the CLAI bot that is currently available. If so what reading materials should I start with? Is it possible to leverage "zsh"/"bash" and other cli tools with python AI systems.
https://redd.it/12uhaak
@r_bash
Pure bash password generator
I wrote something like this but *waay* too complicated a few months ago. I fully realize it's not up to CISA standards, but I needed a way to auto generate dev Mysql passwords inside containers on startup.
genpw(){
declare -i limit="$1"
declare pw=''
_instr(){
declare -r str="$1"
declare -i sl=${#str}
declare -r chr="${2:0:1}"
declare -i ndx=$((RANDOM % ${sl}))
echo "${str:0:ndx}${chr}${str:$((ndx+1)):$((sl-ndx))}"
}
while [[ ${#pw} -le $limit ]]
do
if [[ $((RANDOM % 2)) -eq 0 ]]; then
# lc ascii
pw="$pw"$(printf "\x$(printf %x $((97+(RANDOM % 26))))")
elif [[ $((RANDOM % 2)) -eq 0 ]]; then
# uc ascii
pw="$pw"$(printf "\x$(printf %x $((65+(RANDOM % 26))))")
elif [[ $((RANDOM % 2)) -eq 0 ]]; then
# digits
pw="$pw"$((RANDOM % 10))
fi
done
declare c
# often mandatory non alpha characters
for c in '#' '@' '%'
do
pw="$(_instr ${pw:0:$limit} $c)"
done
echo "$pw"
unset -f _instr
} # genpw()
ahare@box:~/wk$ genpw 30
lQki068h@kUqa#8ewbtqw%t8eZkGcN
ahare@box:~/wk$ genpw 40
zwxNg7xl5Fz%EJBzajXdAn2dPTh#kdcJp@gk3fgM
https://redd.it/12trtg2
@r_bash
Aggregate multiple lines
I have a file that looks like this -
a 6509568
a 8011776
a 8011776
a 8011776
a 8011776
b 1112800
b 1369600
b 1369600
How do I make it look like -
a 38556672
b 3852000
https://redd.it/12t9df7
@r_bash
Intro to Bash scripting for scraping and automation
https://www.trickster.dev/post/intro-to-bash-scripting-for-scraping-and-automation/
https://redd.it/12sutav
@r_bash
Why is it that a command run from the terminal command line produces line break but the same command run within bash script has no line break/
If I run the following commandslsblk > junk2.txtcat junk2.txt
I see output with line breaks in the output like NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTSloop0 7:0 0 285M 1 loop /snap/atom/282loop1 7:1 0 284.9M 1 loop /snap/atom/286loop2 7:2 0 4K 1 loop /snap/bare/5
​
But if I put assign the output of that command to a script variable and then echo that variabletemp1=$(lsblk) echo $temp1
My output has no line breaksNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS loop0 7:0 0 285M 1 loop /snap/atom/282 loop1 7:1 0 284.9M 1 loop /snap/atom/286 loop2 7:2 0 4K 1 loop /snap/bare/5
So why do I get line breaks with the first approach but not the second? Is the difference explained by different behaviors between cat vs. echo?
Thanks very much.
https://redd.it/12rzx3b
@r_bash
Is it okay to include bash scripting in an embedded systems end of studies project?
I would love to see if there is anyone here who included it in his/her end of studies project. I tried to only use python with Raspberry Pi, since it seems more known in my university, but I keep having problems with the Speech Recognition module.
Now I'm considering using a bash script (and a microphone) to record audio and turn it into text, and using python within the script to read (via speakers) the final output based on the text.
TLDR: Do you think the professors within the jury will approve of using bash in an embedded systems end of studies project?
https://redd.it/12rskkq
@r_bash
A new paradigm file-manager
By accident I might stumble upon a new way of doing command line – in the project: [https://github.com/psprint/n-commodore](https://github.com/psprint/n-commodore). it is written in Zsh but can be run from any shell.
Basically it’s about 3 factors:
* panelize everything,
* grep everything,
* save everything.
Panelization is known from Midnight Commander - it means to capture command output into a list that can be browsed. Grepping is known from fzf. Screen saving is a new paradigm
In short, you have a new screen (a greppable panel) for each new command, which is saved to the disk (GDBM), and which can be fetched/navigated to, having also PWD dir and position in panel restored.
Asciicasts:
[https://asciinema.org/a/578076](https://asciinema.org/a/578076)
[https://asciinema.org/a/578088](https://asciinema.org/a/578088) (new features: 2 column view, man page viewing and ag/ripgrep/ack interface).
​
https://preview.redd.it/71toi7je0mua1.png?width=767&format=png&auto=webp&v=enabled&s=e0f08dcb1fa9245a5b4d38e4061fb21ab4f83490
https://redd.it/12qh07j
@r_bash
Curious, how long did it take you to learn bash?
Also, did you have any programming knowledge prior?
https://redd.it/12p1oit
@r_bash
Bash
What should i do to be bash & shell god?
https://redd.it/12n05wc
@r_bash
Execute local sh on remote machine
Hi guys, is there any way I can execute a script that's in my local machine on remote ones?
I need to run a series of test on several systems every day so, I made a script for It. Right now I have that script on a pen that I insert into each of those system, mount, and run but, if I could do this from my local machine it would be so much more efficient.
Any tips?
Thanks in advance.
https://redd.it/12n08ii
@r_bash
quick question
Hello, I am making a script that installs and configures a bunch of stuff and I am having a problem with an EOF statement in a function. I am not sure if it works but VsCode and ShellCheck have both flagged it.
Code:
#adds desktop entries for WM's
dotdesktop () {
cat << EOF > /usr/share/xsessions/qtile.desktop
Desktop Entry
Name=Qtile
Comment=Qtile Window Manager
Exec=qtile start
Type=Application
Keywords=wm;tiling
EOF
cat << PIG > /usr/share/wayland-sessions/hypr.desktop
Desktop Entry
Name=Hyprland
Comment=Hyprland Window Manager
Exec=exec Hyprland
Type=Application
Keywords=wm;tiling;wayland
PIG
}
the errors are :
Couldn't parse this here document. Fix to allow more checks.
Remove indentation before end token (or use <<- and indent with tabs).
https://redd.it/12mn1l9
@r_bash
A new, unprecedented approach to the command line
https://asciinema.org/a/577630
https://redd.it/12m6fan
@r_bash
Is it possible to make zsh look like GitBash without appealing to OhMyZsh?
Hi everyone!
Nothing to add to the title, it speaks by itself, but to give you as much informations as possible I tell you what I did!
So, I recently switched to Mac. I'm studying web development and until now I used GitBash for windows. I immediately realized that zsh style was pretty different so I tried to modify it to make it look as close as possible like GitBash. I created a .zshrc file in my home directory and with vscode I did the following modifications PS1="%F{green}%n@%m%f %F{yellow}%1\~%f $ "
The problem is that there is a lot of stuff that I'd like to modify but I wasn't still able to figure out how yet. These are the main things that I'd like to achieve:
\-When I do 'ls' the directories are not listed in blue with the '/' symbol. I have to 'ls -F' to identify them as a directories (and of course they still miss the color).
\-I didn't do anything regarding git yet but I'd like to have the branch names between brackets and coloured in blue
\-In git bash I had the whole paths listed. For example I had \~/one/two/current-directory. Now I just have the current-directory listed. I have to 'pwd' to see the whole path.
\-Finally, in GitBash the prompt $ started in a new line.
I looked online and some people suggest ohmyzsh. I'd like to achieve these results with out it. I also did 'man ls' to see what it says about colours. It talks about CLICOLOR and LSCOLORS but I wasn't able to understand how to apply them to get the result yet.
Could you guys help me?
Thank you!
https://redd.it/12lz3kb
@r_bash
Need help as an absolute beginner on directories and files
Hi everyone. I have a class this semester which requires me to work with bash. We have a homework and unfortunately my course does not provide any helpful infos on how bash works. Here is my homework
Consider the following output from /usr/bin/tree -p | sed -E "s/(\\[d?)([rxw-\]+)/\\1/g":
.
|- [d\] bars
| |- [d\] baz
| | |- [\] corge
| |- [\] quuz
|- [d\] corge
| |- [d\] grault
| |- [d\] garply
| | |- [\] version
| |- [\] partitions
|- [d\] foo
| |- [\] quux
|- [\] fstab
|- [\]qux
|- [\] rumo
6 directories, 8 files
Create the same structure consisting of 6 directories and 8 files using only shell commands. Give all the commands to solve this task in the correct order. For the version, partitions, and fstab files, use the appropriate /proc/version, /proc/partitions, and /etc/fstab files. All other files should be empty.
From all the research i have done on the internet i came up with something like
mkdir root_.
mkdir root_./bar
mkdir root_./bar/baz
mkdir root_./corge
mkdir root_./corge/grault
mkdir root_./corge/grault/graply
mkdir root_./foo
touch root_./baz/corge.txt
touch root_./bar/quuz.txt
... and so on
Am I on the right path here? It could be compeletly different than what they are asking. Would be amazing if i could learn what am i supposed to do and maybe what to study.
All helps are appreciated thank you!
https://redd.it/12lrj2o
@r_bash
What happened with wiki.bash-hackers.org?
This site was a great guide for me, does anyone know what happened?, today I tried to check the page and it seems to be dead 😢
https://redd.it/12lmqoy
@r_bash
