plexexternaldrivepermissionfixer.sh

#!/bin/bash
user="${SUDO_USER:-$(whoami)}"
command -v dmenu > /dev/null 2>&1
if [ $? == 1 ]
then
    echo "The command dmenu was not found please install it using \"sudo apt install dmenu\""
    exit 1
else
    drive="/dev/$(lsblk -o NAME,MOUNTPOINT | awk '{if(NR>1)print}' | sed '/\(loop\|\/$\)/d' | sed '/\//!d' | cut -c 7- | dmenu -l 35 | awk '{print $1;}')"
    if [ $drive == "/dev/" ]
    then
        echo "You didn't specify a drive to enable plex access on. Exiting.."
        exit 1
    else
        driveuuid=$(blkid $drive | sed -e 's!.* UUID=\"\(\([0-9a-zA-Z]\|-\)\+\)\".*!\1!g')
        if [ -z $driveuuid ]
        then
            echo "The drive you specified either does not exist, or isn't detected my the computer. Please mount the disk and any partitions you want accessible to plex before continuing."
            exit 1
        else
            read -p "What do you want to call the drive when the drive mounts to the filesystem in the media folder? ex: /media/$user/" name
            read -p "Would you like to create a backup of the fstab file in case something goes terribly wrong? (Y/n)" backup
            if [ "$backup" != "n" ]
            then 
                printf $(cat /etc/fstab) > /tmp/fstabbackup
                if [ $? == 1 ]
                then
                    read -p "I was unable to successfully create the backup, it isn't recommended to continue further. Would you like to continue anyway? (y/N)" cont
                    if [ "$cont" != "y" ]
                    then
                        exit 1
                    else
                        echo "Continuing.."
                    fi
                else
                    echo "Successfully backed up."
                fi
            fi
            printf "$(cat /etc/fstab | sed "/$driveuuid/d")\n/dev/disk/by-uuid/$driveuuid /media/$user/$name auto nosuid,nodev,nofail 0 0" > /etc/fstab
            if [ $? == 1 ]
            then
                echo "I wasn't able to update the fstab file with the proper data. Please make sure you run this script as sudo before continuing."
                exit 1
            else
                umount $drive
                umountpid=$!
                if [ $? == 1 ]
                then
                    echo "Some unknown error occurred while un-mounting the drive. Please make sure the drive is not in use while performing this operation."
                    exit 1
                else
                    wait $umountpid
                    mkdir /media/$user/$name
                    mount /dev/disk/by-uuid/$driveuuid
                    if [ $? == 1 ]
                    then
                        echo "Some unknown error occurred while mounting the drive. We are unsure of what caused the error, but it could be because the fstab file might've become corrupted. Restoring backup if one was created."
                        tmpfstab=$(cat /etc/fstab)
                        printf $(cat /tmp/fstabbackup) > /etc/fstab
                        if [ $? == 2 ]
                        then
                            echo "No backup, keeping current fstab. The script will now exit."
                            printf $tmpfstab > /etc/fstab
                        else
                            echo "Successfully restored the backup. The script will now exit."
                            exit 1
                        fi
                    else
                        echo "Successfully re-mounted the drive. The script will now apply the proper permissions for plex."
                        chmod go+rx /media/$user
                        if [ $? != 0 ]
                        then
                            echo "Failed to give permissions, exiting"
                            exit 1
                        fi
                        chmod go+rx /media/$user/$name
                        if [ $? != 0 ]
                        then
                            echo "Failed to give permissions, exiting"
                            exit 1
                        fi
                        setfacl -m g:plex:rx /media/$user
                        if [ $? != 0 ]
                        then
                            echo "Failed to give permissions, exiting"
                            exit 1
                        fi
                        read -p "What is the path to the folder that the plex media will reside at? (just hit enter if there is no subfolder called something like \"Media\" where all of the plex content resides) ex: /media/$user/$name/" folder
                        chmod -R +rwX /media/$user/$name/$folder
                        if [ $? != 0 ]
                        then
                            echo "Failed to give permissions, exiting"
                            exit 1
                        fi
                        echo "Permissions should be properly set!"                        
                    fi
                fi
            fi
        fi
    fi
fi