This script is meant to be used to replot chia plot

replot.sh

#!/bin/bash

# https://github.com/anordal/shellharden/blob/master/how_to_do_things_safely_in_bash.md#how-to-begin-a-bash-script
set -e # stop the script if any command has non-zero exit status
set -u # throws an error if a variable is not defined 
set -o pipefail # returns an error if any command fails in a pipe

shopt -s nullglob globstar # enables empty glob results and recursive globbing

# list of disk where there are plots to replace
DISK_ROOT_PATHS=("/media/timo/WD1")
# folder in DISK_ROOT_PATHS that contains plots to replace
OG_PLOTS_FOLDER="plots"
# folder where to put the new plots
PORTABLE_PLOTS_FOLDER="portablePlots"

# chia_plot config
CHIA_PLOT_PATH="/home/timo/Perso/chia-plotter/build/chia_plot"

TMP_FOLDER="/media/timo/ST2/tmp/"  # tmp folder used by the plotter
TMP2_FOLDER="/mnt/ram/" # should be ram disk
DESTINATION_FOLDER="/media/timo/ST2/buffer/" # folder where to put the final plots before moving them

FARMER_KEY=""          # -f
CONTRACT=""            # -c
THREAD_MULTIPLIER=4    # -r
THREAD_MULTIPLIER2=2   # -K
BUCKET_1_2=512         # -u
BUCKET_3_4=128         # -v

function plot() {
  "${CHIA_PLOT_PATH}" \
    -f "${FARMER_KEY}" \
    -c "${CONTRACT}" \
    -t "${TMP_FOLDER}" \
    -2 "${TMP2_FOLDER}" \
    -d "${DESTINATION_FOLDER}" \
    -r "${THREAD_MULTIPLIER}" \
    -K "${THREAD_MULTIPLIER2}" \
    -u "${BUCKET_1_2}" \
    -v "${BUCKET_3_4}"
}

for index in "${!DISK_ROOT_PATHS[@]}"; do

  DISK_ROOT_PATH="${DISK_ROOT_PATHS[index]}"
  OG_PLOTS_FOLDER_PATH="${DISK_ROOT_PATH}/${OG_PLOTS_FOLDER}/"
  PORTABLE_PLOTS_FOLDER_PATH="${DISK_ROOT_PATH}/${PORTABLE_PLOTS_FOLDER}/"

  echo "Re plots k32 from $OG_PLOTS_FOLDER_PATH to $PORTABLE_PLOTS_FOLDER_PATH using nft"

  find "${OG_PLOTS_FOLDER_PATH}" -name '*k32*' | while read -r og_plot; do
    echo "plot in $DESTINATION_FOLDER"
    plot
    echo "remove $og_plot"
    rm "$og_plot"
    echo "move generated plot to ${PORTABLE_PLOTS_FOLDER_PATH}"
    rsync --remove-source-files --progress --preallocate "${DESTINATION_FOLDER}"* "${PORTABLE_PLOTS_FOLDER_PATH}"
  done
done

I made it a bit different. I can run the same script from multiple sources to replot on different NFS shares like this;
It would be nice also, after the script is done, to check how many disk space there is and to plot the additional free disk space.

#!/bin/bash

# https://github.com/anordal/shellharden/blob/master/how_to_do_things_safely_in_bash.md#how-to-begin-a-bash-script
set -e # stop the script if any command has non-zero exit status
set -u # throws an error if a variable is not defined
set -o pipefail # returns an error if any command fails in a pipe

shopt -s nullglob globstar # enables empty glob results and recursive globbing

# list of disk where there are plots to replace
DISK_ROOT_PATHS=("/mnt/nfs")
# folder in DISK_ROOT_PATHS that contains plots to replace
OG_PLOTS_FOLDER="plots"
# folder where to put the new plots
PORTABLE_PLOTS_FOLDER="NFTplots1"


for index in "${!DISK_ROOT_PATHS[@]}"; do

        DISK_ROOT_PATH="${DISK_ROOT_PATHS[index]}"
        OG_PLOTS_FOLDER_PATH="${DISK_ROOT_PATH}/${OG_PLOTS_FOLDER}/"
        PORTABLE_PLOTS_FOLDER_PATH="${DISK_ROOT_PATH}/${PORTABLE_PLOTS_FOLDER}/"

        echo "== STARTING REPLOTTING from $OG_PLOTS_FOLDER_PATH to $PORTABLE_PLOTS_FOLDER_PATH ======="

        find "${OG_PLOTS_FOLDER_PATH}" -name '*k32*' | while read -r og_plot ; do
                echo "======================================================================"
                chia_plot -n 1 -r 8 -t /mnt/tmp/ -2 /mnt/tmp/ -d /mnt/nfs/NFTplots1/ -c xxxxxxx -f xxxxxxx
                echo "remove $og_plot"
                rm "$og_plot"
        done
done