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#!/usr/bin/env bash
# Description: Splits the file passed as argument or joins selection
#
# Note: Adds numeric suffix to split files
# Adds '.join' suffix to the first file to be joined and saves as output file for join
#
# Shell: Bash
# Author: Arun Prakash Jana
selection=~/.config/nnn/.selection
echo -n "press 's' (split current file) or 'j' (join selection): "
read resp
if [ "$resp" = "j" ]; then
if [ -s "$selection" ]; then
arr=$(cat $selection | tr '\0' '\n')
{ read -r file; } <<< "$arr"
file=$(basename "$file").out
cat "$selection" | sort -z | xargs -0 -i cat {} > "$file"
fi
elif [ "$resp" = "s" ]; then
if ! [ -z "$1" ] && [ -f "$1" ] ; then
# a single file is passed
echo -n "split size in MB: "
read size
if ! [ -z "$size" ]; then
split -d -b "$size"M "$1" "$1"
fi
fi
fi
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