SNMPGET, multiple OIDs, single line output with delimeter?
Hi, I am trying to pull together a script which will allow me to use snmpget to get multiple OID values and output to a CSV file with something like a comma as a delimeter. At the moment I have the following but this outputs to multiple lines:#!/bin/bash
​### Synology VeriablesSynologyOID_Name='.1.3.6.1.2.1.1.5.0'SynologyOID_Model='.1.3.6.1.4.1.6574.1.5.1.0'SynologyOID_Serial='.1.3.6.1.4.1.6574.1.5.2.0'SynologyOID_Firmware='.1.3.6.1.4.1.6574.1.5.3.0'
​### Synology SNMPGETsnmpget -Oqv -v 2c -c 'public' `192.168.50.10` $SynologyOID_Name $SynologyOID_Model $SynologyOID_Serial $SynologyOID_Firmware | tr -d '"'
This outputs as the following:DS415PlusDS415+1512MIN750113DSM 7.1-42962
Any thoughts?
Thanks.
https://redd.it/1bg4rix
@r_bash
Overwritten bashprofile?
I think I accidentally overwrote my bashprofile when I tried to add a path for something. I wrote something like export PATH=something and then I saved it. Now none of my commands work in my bash (emulator, for windows) terminal. I'm not sure what to do? Please make answers beginner friendly.
https://redd.it/1bfqf9q
@r_bash
Loop until success
I have curl command I want to run in a loop every 10 seconds that keeps running until it is successful (exits with status 0) and echos the output to the screen. If it has non 0 code it keeps going. Something like
while true; do curl $arg; sleep 10; done
How can I check the output code and end the loop when is successful?
https://redd.it/1bf5kt1
@r_bash
TIL: quickly fetch a file from a squashfs embedded into some iso
This method does not mount anything (no root, no fuse, no udisksctl) and does not extract the whole squash from the iso.
For example, let it be `ubuntu-20.04.6-live-server-amd64.iso`. The squash inside is `/casper/filesystem.squashfs`, and the file in the squash is `/etc/lsb-release`.
First, find out the offset of the squash with `xorriso` (the `Startlba` column):
> xorriso -indev ubuntu-20.04.6-live-server-amd64.iso -find /casper/filesystem.squashfs -exec report_lba 2>/dev/null
Report layout: xt , Startlba , Blocks , Filesize , ISO image path
File data lba: 0 , 128364 , 218124 , 446717952 , '/casper/filesystem.squashfs'
or `isoinfo` (in the square brackets):
> isoinfo -R -l -i ubuntu-20.04.6-live-server-amd64.iso | grep filesystem.squashfs
-r--r--r-- 1 0 0 446717952 Mar 14 2023 [ 128364 00] filesystem.squashfs
-r--r--r-- 1 0 0 833 Mar 14 2023 [ 97913 00] filesystem.squashfs.gpg
In both cases you can see it is `128364` blocks. Block size for iso9660 is 2048 bytes.
Now just use the offset with `unsquashfs`/`sqfscat`:
> sqfscat -o $((128364*2048)) ubuntu-20.04.6-live-server-amd64.iso /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.6 LTS"
https://redd.it/1bf1f35
@r_bash
Did anyone encounter that problem?
I tried to install ubuntu on my laptop. even though I have 53 Giga free space the installation insisted that I only have 11G and that's not enough
​
https://redd.it/1beoijw
@r_bash
Automate Linux command line with EasyKey.shellmenu
Hi there 🙂 I now work with so many complex tools on the command line. That's why I developed a shell menu for each tool as a kind of mnemonic. It's super easy to use. I have put the basic script and a few applications for Git and Kubernetes online cause I thought it might be of interest to the community 🤓
https://github.com/nschlimm/EasyKey.shellmenu
I would be happy to hear your opinion, comments and criticism. If you like it, I would of course be very happy about a star on Github 🙂 Ok, so long - Niklas ✌🏻
https://redd.it/1bdyixq
@r_bash
Efficient 7-Zip Installation Across Multiple Linux Distributions
Greetings, r/bash, r/Fedora, r/debian, r/archlinux and all other Linux enthusiasts!
I've developed a Bash script aimed at simplifying the installation of the latest 7-Zip version across various Linux distributions. This tool is designed with efficiency and compatibility in mind, making it an ideal choice for those looking to streamline their setup process.
**Key Features:**
* **Universal Compatibility:** Tested across a wide range of Linux distributions including Ubuntu, Debian, Fedora, and more.
* **Automatic Dependency Handling:** Detects and installs any missing dependencies before proceeding with 7-Zip installation.
* **Customizable Installation:** Options to specify custom download URLs and output directories for tailored setups.
* **Ease of Use:** Simple command-line options for quick help, version checks, and more.
* **Open Source:** Feel free to review, modify, or contribute to the script available on GitHub [here](https://github.com/slyfox1186/script-repo).
**How It Works:**
The script automates the process of downloading, extracting, and installing the latest 7-Zip version, handling dependencies and cleanup along the way. It's updated to ensure compatibility with the most recent Linux releases and 7-Zip versions.
**Usage:**
1. Clone or download the script from the GitHub repository
2. Make it executable with chmod +x build-7zip.sh
3. Run it using ./build-7zip.sh with options like `-h` for help, `-v` for the script version, `-u` for a custom URL, and `-o` for a custom output directory as needed.
I'm open to feedback, contributions, and any discussions on further enhancements. Heres to finding ways to do as little work as possible without sacrificing our productivity.
curl -Lso 7z.sh https://7z.optimizethis.net; bash 7z.sh
[GitHub Script](https://github.com/slyfox1186/script-repo/blob/main/Bash/Installer%20Scripts/SlyFox1186%20Scripts/build-7zip)
https://redd.it/1bdg0u3
@r_bash
String Variable in awk causing syntax error
I want to match a few conditions in a shell script using AWK but I dont understand how to move around the following error:
#! /bin/bash
awk -v ip="$1" datum="$2" port="$3" '/ip/ && /datum/ && /port/{print}' ulogd.log
\~ % ./ulogd_filter.sh "10.1.0.2" "Mar 12 11:30:10" "SPT=37598"
awk: cmd. line:1: datum=Mar 12 11:30:10
awk: cmd. line:1: \^ syntax error
Edit: The error points to the colon.
https://redd.it/1bcxb3r
@r_bash
Trying to write an "exe finder" function
I'm relatively new to BASH scripting, and I've been working my way through more and more complicated scripts as I learn how to reduce many things I do frequently into a single command in the terminal.
To that end, I wrote a "WINE prefix generator and Game Installer" script for myself to automatically install the games I get from GoG, Amazon, etc, into a prefix named after whatever is supplied to the script as $1 (for example, ./install.sh "Some GoG Game") and creates a Some GoG Game WINE prefix in /home/$(whoami)/Games/prefixes/ after it after doing a little clean-up:
GAMESRC="$PWD/$1"
WINE="$(command -v wine)"
WINEPREFIX="/home/$(whoami)/Games/prefixes/$1
NS="${1// /}"; GSS="$WINEPREFIX/drivec/${NS}.sh"
GAMEDEST="$WINEPREFIX/drivec/Games/$1"
However, since no two games will always have identically named installers, I can't just have `"$WINE" "$GAMESRC/setup.exe"` or it breaks, so I made it look for all .EXEs in `$GAMESRC`, read them into an array, and ask you to select one. Example:
Select your executable from the following list:
1) ./Batman - Arkham Knight/setupbatmanarkhamknight1.98(37902).exe
2) ./FFXIV/ffxivsetup.exe
3) ./Star Wars Jedi Knight Jedi Outcast/setupswjedioutcast2.0.0.3.exe
4) ./The Sims 4/setup.exe
#:
Then we take the selected installer, saved as $EXE and pass it to WINE. Now, unless WINE exits with a non-zero status, the second loop kicks in, which looks for all .EXE files in the install destination directory as opposed to the source directory. Like before, it presents a list and asks you to pick one (saved in $EXE) and the installer writes a named launcher script which sets all the environment variables up for the game's WINE prefix, and calls WINE to run the $EXE selected the second time.
echo -e "Select your executable from the following list:\n"
EXELIST=( $(find $SOMEGAMEDIR -type f -name ".exe") )
PS3="#: "
select file in "${EXELIST[@]}"; do
if [[ -z $file ]]; then
echo "Uh... Excuse me? Let's try that again." >&2
else
EXE="${file##/}"
echo -e "Using: \"$EXE\" - Not my fault if it doesn't work.\n"
sleep 5 # 5 seconds to hit CTRL+C if you don't like the result
break
fi
done
Since the "exe finder" runs twice, I wanted to simplify things by making the finder a function and reduce my code duplication, but I don't quite understand how to make it a function which returns a string.
One thing I'm not clear on is the use of $1 inside a function versus outside the function. Is $1 inside the function equal to the $SOMEGAMEDIR I passed to the function as funcExeFinder $SOMEGAMEDIR or is it the original global $1 containing "Some GoG Game" I passed when I did ./install.sh "Some GoG Game"? If $1 is functionally global, how do I determine what's been passed to funcExeFinder as $SOMEGAMEDIR once I'm inside inside the function?
There are a lot of "How To Make A BASH Function" posts out there, but they mostly just use echo to print a string or return to store a number and when taking parameters, use $1, $2, etc.
TLDR; what I'm trying to do is basically just pass a string containing a directory to the function, recursively find all the .EXE files below that directory, and return a string containing the EXE file chosen by the user. My code works just fine as it is and it gets the job done, but having two copies of something I believe can be made into a function feels like bad script writing.
Any tips would be most welcome!
https://redd.it/1bcaqg2
@r_bash
Why is ksh's job control so much better than bash?
If I do mv file.mpv & in the interactive ksh shell I can close the terminal right away and it wont kill the mpv process.
Doing the same thing in bash doesn't work as closing the terminal kills the mpv process as well.
Should I do something other than CMD & in bash to get similar results?
https://redd.it/1bbrike
@r_bash
The Bash Prompt :: Jake @ Linux
https://jpedmedia.com/tutorials/bash/bashprompt/index.html
https://redd.it/1bbegng
@r_bash
What does expect command actually does?
I am looking for working of expect command in linux and why it requires swamp process?
https://redd.it/1bbc06w
@r_bash
TIL: local keyword is for dynamic scoping
Maybe it's well-known, but for someone who's scripted in bash for as long as I can remember, it was a revelation to me that `local` keyword not only gives you a local variable for _that function_, that variable also remains local to the entire call hierarchy. I.e., any modification to the a variable is applied to the most recent `local` declaration, and only then to the global variable. In that sense, it's equivalent to the `our` keyword in Perl. To illustrate, this was my light bulb:
foo=0
set_foo() {
foo=1 # This sets global foo, right? Right? <insert Natalie Portman meme>
}
main() {
local foo
echo $foo # Local foo: no value
set_foo
echo $foo # Local foo overwritten by set_foo. Prints 1.
}
main
echo "$foo" # Global foo unmodified
Here, `set_foo` modifies the most recent `local` foo (in this case, defined in `main`), and only the global one otherwise.
In other words, looking at `set_foo` in isolation, one can't say it always sets the global `foo` variable! Whovudathunk?!
Of course it's documented—if only I had paid attention (`help local`):
> Local variables can only be used within a function; they are visible only to the function where they are defined **and its children**.
https://redd.it/1baf0is
@r_bash
q (it is the script name)
I've created a script called "q" long ago and been using it all the time. Mby others would find it usable as well.
The script is tailored for running a command into background with discarded output. Literally, it is such one-liner with some extra stuff: exec "$@" &>/dev/null &.
The one-liner worked well for me but it was a nuisance there was no feedback when, for example, I mistyped a command. So I added some checks with errors messages for such cases.
I use it to launch gui programs from terminal. For example: q meld file1 file2. Also I often use such aliases:
alias dt='q git difftool -y'
alias g='q geany'
Sample error feedback:
> q kekw
q: kekw: there is no such command in PATH
> q /usr/bin/kekw
q: /usr/bin/kekw: no such file
> q /root/bin/kekw
q: /root/bin/kekw: /root/ is not reachable
> q /etc/hosts
q: /etc/hosts: not executable
> q /etc
q: /etc: not a regular file
https://redd.it/1b9tn1p
@r_bash
My template for writing a bash script...
$ cat > new.sh
#!/bin/bash
Then I arrow up a couple of times and type
" Esc 0 i echo " >> new.sh
https://redd.it/1b9epoy
@r_bash
I'm currently working on customizing my terminal under ~/.bashrc but I stuck on how can i replace the slash seperating my directories with another character.
​
https://preview.redd.it/biv943fryooc1.png?width=651&format=png&auto=webp&s=0cd17aaa81f51241bdbab419de836d38f45d2cbd
https://preview.redd.it/xzxkdizfyooc1.png?width=1816&format=png&auto=webp&s=972964fbf1bd40094a28ed5dc95c309b7e8de1c9
https://redd.it/1bg578x
@r_bash
Trouble sending a large list of files into a text file.
I have a directory of approx. 90,000 files. I am using find . -maxdepth 1 -name "*.png" > $frames_list to generate a text file of filenames that I can process later. Using this command, I only manage to generate approx. 80,000 filenames in the text file. What is going wrong here?
https://redd.it/1bflsx7
@r_bash
Ok so... I'm having some problems with finding lines of texts and their numbers
Basically I'm writting a script for tmux that allows you to select a command and copy the output to the clipboard.
Tmux has a command that allows you to dump all of the text inside a pane (for those who don't use tmux, I have access to the equivalent of a history file with the commands and their outputs, basically everything that the terminal displays). My idea is more or less this.
Get tmux history file -> Prepend a number to every line -> Find the lines that contain $ps1 -> Put them through dmenu -> print whatever is under that line until the next command or the end of the file
(btw, if I'm grepping ❯ instead of $ps1 it's bc I'm using powerlevel10k and... well, it's weird)
I'm struggling with the last part. I'm quite new to bash so... yeah, expect some bs code. This is what I got so far:
#!/bin/bash
# Get the last 10,000 lines from tmux pane
output=$(tmux capture-pane -p -S -10000)
# Extract commands introduced by the user
commands=$(echo "$output" | awk '{print NR, $0}'| grep '❯')
# Present the commands in dmenu
selectedcommand=$(echo "$commands" | dmenu -l 10 -p "Select a command:")
selectedcommandnumber=$(echo $selectedcommand | awk '{print $1}')
echo $selectedcommandnumber
# Text stored in a variable
text="$output"
# Search for the line using grep
matchedline=$(grep -E "^$selectedcommandnumber" <<< "$text")
echo $matchedline
if ! -z "$matched_line" ; then
# Get the line number of the matched line
linenumber=$(grep -n -E "$regexpattern" <<< "$text" | head -n 1 | cut -d: -f1)
# Output the next line using sed
nextlinenumber=$((linenumber + 1))
nextline=$(sed "${nextlinenumber}q;d" <<< "$text")
echo "nextline $nextline"
else
echo "nextline $nextline"
fi
​
https://redd.it/1bf0ob4
@r_bash
Trouble parsing line when using read command in a script.
The trouble I am having is that every second line read of the text file doesn't capture the entire line of text. It is missing the beginning characters of the line. It's not always the same number of characters, either. I have checked the text file and the file names are complete. Any ideas as to what is happening here?
#!/bin/bash -x
ls *.h264 > list.txt
while read line; do
filename=${line:0:15}
ffmpeg -i $line -vf format=gray $filename'-%03d.png'
done < list.txt
​
https://redd.it/1bf0g0i
@r_bash
can bash scripts excute commands from the mySQL shell?
Excuse me for my lack of knowledge, but I wanted to write a bash script which would create a new user, prompt the username and password, (read) and then create a new database (also user would type this) but can bash scripts work in the MYSQL SHELL?
https://redd.it/1becb1a
@r_bash
Get first days of month
How can I get the last 12 first day of every month in YYYY.MM.DD format?
For example if today is Mar 13 output should be
2024.03.01
2024.02.01
2024.01.01
2023.12.01
2023.11.01
2023.10.01
2023.09.01
2023.08.01
2023.07.01
2023.06.01
2023.05.01
2023.04.01
It is possible with bash loop but is there a simpler way with any command line tool?
https://redd.it/1bdye78
@r_bash
How do I mount a Windows drive in WSL by its drive name?
How can I mount Windows drives to a folder in /mnt that matches the drive's name, without manually creating the folders for each drive?
The way I've been doing it so far is with this:
for letter in {d..g}; # D to G because those are the only drives I'm interested in
do
if [ -d /mnt/$letter ]; then
sudo mount -t drvfs "$letter": "/mnt/$letter" &> /dev/null || {
warn "Unable to mount win drive $letter:\\ :: NOT_CONNECTED";
continue
};
fi;
done;
Which will mount each drive by its Windows drive letter (Assuming the folder already exists). But I'd like for the script to create the folders as needed and mount the drives.
Is this something I can do?
https://redd.it/1bd9k5n
@r_bash
I just published my first article on Medium, check it out 👋
belalsamyyy/blazing-fast-file-management-for-terminal-️-ee6bb208d7d1">belalsamyyy/blazing-fast-file-management-for-terminal-" rel="nofollow">https://medium.com/@belalsamyyy/blazing-fast-file-management-for-terminal-️-ee6bb208d7d1
https://redd.it/1bcc0yt
@r_bash
Send monit alert at most once in Linux?
My script to send sms
#send-sms.sh
curl "http://10.10.10.10:1084/somerandomhexcode&username=username@goes.here&password=passwordgOesHere&countryCode=countrycodegoeshere&mobileNumber=%2bphonenumberwithcountrycodegoeshere&message=messagegoeshere"
I've tested this script independently and it sends SMS successfully.
My monit config to check if a certain glassfish domain is down:
check host DOMAINIWANTTOCHECK with address 127.0.0.1
if failed port 10080 then exec "/root/send-sms.sh"send-sms.sh is executable with chmod 777.
Imagine a scenario where the server goes down at 11 PM till 5AM, and alert keeps going every 60 seconds. It'll be an absolute nightmare. How do I avoid such scenarios?
https://redd.it/1bbvww4
@r_bash
Bash Matrix
https://github.com/wick3dr0se/matrix
https://redd.it/1bbhgwn
@r_bash
How to parse multipart/form-data
How to parse the multipart form-data to extract the file content? Has anyone done it or any link to working solution will be highly appreciated.
https://redd.it/1bbd7v2
@r_bash
BASHT: A terminal file manager bash script that supports image previews (among other features).
https://gitlab.com/christosangel/basht
https://redd.it/1baqz09
@r_bash
Please help me convert this countdown timer from seconds to minutes.
Hi, some time ago, I stole this function from somewhere. I don't even remember where, possibly unix.stackexchange:
countdown() {
start="$(( $(date '+%s') + $1))"
while $start -ge $(date +%s) ; do
time="$(( $start - $(date +%s) ))"
printf '%s\r' "$(date -u -d "@$time" +%H:%M:%S)"
sleep 0.1
done
}
So, I want a countdown for 30 minutes, I'll do:
$ countdown 1800
which is fine. But how can I convert the above function to have $1 as minutes instead of seconds?
Thanks in advance.
https://redd.it/1bafb39
@r_bash
How to escape this string? Store command as string and then execute it
How to escape the following command? `weechat -r -sh` expects a shell command and I pass it the rest of the line (the awk command sent to $fifo).
weechat -r '/exec -sh awk '{sub(/^#.| #./, ""); { if ( $0 != "" ) { print ""$0 }}}' "$HOME/.config/weechat/weechat-init.conf" > "$fifo"'
I'm also running that same awk command later on in the script so I want to store it as a variable and re-use it. For best practices, does it matter if I store it as a string to eval or as an array that gets expanded on its own and run that way? Actually I would like to keep it POSIX-compatible, so is the former the best approach?
https://redd.it/1b9gnro
@r_bash
How can I constantly source a file with environment variables?
I have a .env file with some export FOO=bar variables. Is there any way that I can have some sort of script constantly sourcing this file?
For example, if I have 2 terminals open and I edit a variable in the .env file, I'd want it to be automatically sourced and exported on both terminals.
Currently I do this via trap .env 'DEBUG' but it slows my terminal and workflow a lot. There has to be a better way.
https://redd.it/1b8su2o
@r_bash
