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
Navita - A new Directory Jumper Utility
https://i.redd.it/mgprurmfdxud1.gif
https://redd.it/1g47ujl
@r_bash
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
I accidentally created a bunch of ~ signs - how do I delete them?
https://redd.it/1g36w4k
@r_bash
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 colorsGREEN='\033[0;32m'YELLOW='\033[0;33m'RED='\033[0;31m'RESET='\033[0m'# Ask user for project nameread -p "Enter the project name: " PROJECT_NAME# Check if input is not empty and doesn't containt spacesif [[ -z "$PROJECT_NAME" || "$PROJECT_NAME" =~ [[:space:]] ]]; thenecho -e "${YELLOW}Project name cannot be empty or contain spaces.${RESET}"exit 1fi# Define variablesPROJECT_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/$PROJECT_NAME.conf"ETC_HOSTS="/etc/hosts"# Check if the project directory already existsif [ -d "$PROJECT_DIR" ]; thenecho -e "${YELLOW}$PROJECT_NAME already exists. Please choose another name.${RESET}"exit 1fi# Create the directory using bedrockcomposer create-project roots/bedrock "$PROJECT_DIR"# Ensure Apache can read and write to the Bedrock directorysudo 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 databaseecho "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 projectecho "Creating Apache configuration for Bedrock"sudo bash -c "cat > $APACHE_CONF <<EOL<VirtualHost *:80>ServerName "$PROJECT_NAME".localDocumentRoot "$PROJECT_DIR"/web<Directory "$PROJECT_DIR"/web>
Options Indexes FollowSymLinks
AllowOverride All
Require all granted</Directory>ErrorLog /var/log/apache2/"$PROJECT_NAME"-error.logCustomLog /var/log/apache2/"$PROJECT_NAME"-access.log combined</VirtualHost>EOL"# Give www-data permissions to write to /var/log/apache2/ directorysudo usermod -a -G adm www-data# Enable the new site and required modulesecho "Enablind the new site and required Apache modules..."sudo a2ensite "$PROJECT_NAME".confsudo a2enmod rewrite# Add the project to /etc/hosts if it doesn't existecho "Adding $PROJECT_NAME.local to /etc/hosts..."if ! grep -q "$PROJECT_NAME.local" /etc/hosts; thensudo bash -c "echo '127.0.0.1 $PROJECT_NAME.local' >> /etc/hosts"fi# Reload Apache for changes to take effectsystemctl reload apache2echo -e "${GREEN}$PROJECT_NAME setup completed! You can access it at http://$PROJECT_NAME.local${RESET}"
https://redd.it/1g2qdqk
@r_bash
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
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
What boredom does to a man replicating the old TVs 'no signal' color bars in BASH
https://redd.it/1g16wrq
@r_bash
"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
My ASCII graphics basic demo engine in BASH language: ISObash.
https://redd.it/1g0jaqj
@r_bash
A Bash Script To Display Animated Christmas Tree In Terminal
https://redd.it/1g0f2jc
@r_bash
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 $rruaddr
done
}
findnodes
Script output once run
bai-ran-cluster-worker0
bai-ran-cluster-worker1
bai-ran-cluster-worker2
bai-ran-cluster-worker3
bai-ran-cluster-worker4
bai-ran-cluster-worker5
bai-ran-cluster-worker6
Find RRU in Worker : bai-ran-cluster-worker3 <--- User inputs any name from the above list
So in this case the user input is passed as arguments from findnodes function to rruchecks function which then checks the system, and gives the below result.
(NU) | RAN650-3V0.8.2patch2 |
NOT UPGRADED
(NU) | RAN650-3V0.8.2patch2 |
NOT UPGRADED
(NU) | RAN650-3V0.8.2patch2 |
NOT UPGRADED10.42.8.3510.42.8.3510.42.8.3610.42.8.3610.42.8.3710.42.8.37
In the above result the 1st line is the expected, the 2nd line is a result of the argument received in rruchecks being passed on to rrupreparation function.
How can I not pass the user input from rruchecks to rrupreparation until all systems have been checked in rruchecks ?
https://redd.it/1fzu7as
@r_bash
How are if, case, etc implemented internally?
I was thinking about it and I realized I had no idea- how do if, for, while, case, etc, all control the execution of separate commands on other lines? For example
if [ "$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
Shell scripting projects for 1 yoe helpdesk to get promoted to a new role?
What could that be?(in new company-switch)
https://redd.it/1fx6m6a
@r_bash
Rate my bash script
https://drive.google.com/file/d/1q7DVciDMbCrO4YyV6U4S4StgZ2ll5MFu/view
https://redd.it/1fx3pbb
@r_bash
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 [ "$COMPILATIONERROR" = true ]; then
exit 1
fi
i'm trying to parse a text file of compilation output for specific error patterns. i've created a simplified version of the file above.
i've been using grep to check for the patterns via regex, but have removed the complexity in the example above - just a simple string match demonstrates my problem. basically it seems that grep will return one 'line' that the while loop reads through, even when grep finds no match. i want the while loop to not enter at all in that scenario.
i'm not tied to grep/this while loop method to achieve an equivalent result (echo out each match in a format of my choice, and exit 1 after if matches were found). am a bash idiot and was led down this root via google!
thanks <3
https://redd.it/1g4baiz
@r_bash
Wildcards don't work when executing script as a program
Hello. I've been going mad trying to figure out exactly why my Bash script for batch encoding videos in FFmpeg doesn't recognize wildcards as such when I run it as a program. Filename for the script is "batch.sh", and I am running it in a directory where I have video files I want to re-encode. Here's what I've got for the script:
#!/bin/sh -efu
for i in .mkv;
do
ffmpeg \
-i "$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
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
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
A bash banner
https://preview.redd.it/y17eh6ai7eud1.png?width=1142&format=png&auto=webp&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
Script to rename multiple files quickly using vim
https://redd.it/1g1hrtf
@r_bash
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
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
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
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
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
How do I finish a pipe early?
Hi.
I have this script that is supposed to get me the keyframes between two timestamps (in seconds). I want to use them in order to splice a video without having to reencode it at all. I also want to use ffmpeg for this.
My issue is that I have a big file and I want to finish the processing early under a certain condition. How do I do it from inside of an awk script? I've already used this exit in the early finish condition, but I think it only finishes the awk script early. I also don't know if it runs, because I don't know whether it's possible to print out some debug info when using awk. Edit: I've added print "blah"; at the beginning of the middle clause and I don't see it being printed, so I'm probably not matching anything or something? print inside of BEGIN does get printed. :/
I think it's also important to mention that this script was written with some chatgpt help, because I can't write awk things at all.
Thank you for your time.
https://pastebin.com/cGEK9EHH
#!/bin/bash
set -x #echo on
SOURCEVIDEO="$1"
STARTTIME="$2"
ENDTIME="$3"
# Get total number of frames for progress tracking
TOTALFRAMES=$(ffprobe -v error -selectstreams v:0 -countpackets -showentries stream=nbreadpackets -of csv=p=0 "$SOURCEVIDEO")
if -z "$TOTAL_FRAMES" ; then
echo "Error: Unable to retrieve the total number of frames."
exit 1
fi
# Initialize variables for tracking progress
framesprocessed=0
startframe=""
endframe=""
startdiff=999999
enddiff=999999
# Process frames
ffprobe -showframes -selectstreams v:0 \
-printformat csv "$SOURCEVIDEO" 2>&1 |
grep -n frame,video,0 |
awk 'BEGIN { FS="," } { print $1 " " $5 }' |
sed 's/:frame//g' |
awk -v start="$STARTTIME" -v end="$ENDTIME" '
BEGIN {
FS=" ";
print "start";
startframe="";
endframe="";
startdiff=999999;
enddiff=999999;
betweenframes="";
print "startend";
}
{
print "processing";
current = $2;
if (current > end) {
exit;
}
if (startframe == "" && current >= start) {
startframe = $1;
startdiff = current - start;
} else if (current >= start && (current - start) < startdiff) {
startframe = $1;
startdiff = current - start;
}
if (current <= end && (end - current) < enddiff) {
endframe = $1;
enddiff = end - current;
}
if (current >= start && current <= end) {
betweenframes = betweenframes $1 ",";
}
}
END {
print "\nProcessing completed."
print "Closest keyframe to start time: " startframe;
print "Closest keyframe to end time: " endframe;
print "All keyframes between start and end:";
print substr(betweenframes, 1, length(betweenframes)-1);
}'
Edit: I have debugged it a little more and I had a typo but I think I have a problem with sed.
ffprobe -showframes -selectstreams v:0 \
-printformat csv "$SOURCEVIDEO" 2>&1 |
grep -n frame,video,0 |
awk 'BEGIN { FS="," } { print $1 " " $5 }' |
sed 's/:frame//g'
The above doesn't output anything, but before sed the output is:
38:frame 9009
39:frame 10010
40:frame 11011
41:frame 12012
42:frame 13013
43:frame 14014
44:frame 15015
45:frame 16016
46:frame 17017
47:frame 18018
48:frame 19019
49:frame 20020
50:frame 21021
51:frame 22022
52:frame 23023
53:frame 24024
54:frame 25025
55:frame 26026
I'm not sure if sed is supposed to printout anything or not though. Probably it is supposed to do so?
https://redd.it/1fxhx2n
@r_bash
Getting the “logname” of a PID
Say I log into a box with account “abc”. I su to account “def” and run a script, helloworld.sh, as account “def”. If I run a ps -ef | grep helloworld, I will see the script running with account “def” as the owner. Is there a way I can map that back to the OG account “abc” to store that value into a variable?
Context: I have a script where I allow accounts to impersonate others. The impersonation is logged in the script’s log via the logname command, but I also have a “current users” report where I can see who’s currently running the script. I’d like the current users report to show that, while John is running the script, it’s actually Joe who’s impersonating John via an su.
I’ve tried ps -U and ps -u, but obviously, that didn’t work.
https://redd.it/1fx6n52
@r_bash
How do I replace part of a line with the output of a variable?
Hi all,
I am writing a script that will update my IPv4 on my Wireguard server as my dynamic IP changes. Here is what I have so far:
#! /bin/bash
CurrentIP= curl -S -s -o /dev/null http://ipinfo.io/ip
WireguardIP= grep -q "pivpnHOST=" /etc/pivpn/wireguard/setupVars.conf |tr -d 'pivpnHOST='
if "$Current_IP" = "$Wireguard_IP" ;then
exit
else
#replace WireguardIP with CurrentIP in setupVars.conf
fi
exit 0
when trying to find my answer I searched through stack overflow and think I need to use awk -v, however; I don't know how to in this case. Any pointers would be appreciated.
https://redd.it/1fwxq9l
@r_bash
