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#!/usr/bin/env sh
# Description: Create and verify md5 checksums
#
# If selection is used: it will generate one md5 file containing the checksums and file names
# [with paths if they are in another directory]
# If file is used: if the file is .md5 file, then it does the check
# if the file is not .md5 file, it creates the md5 file from it
#
# Shell: POSIX compliant
# Author: ath3
selection=~/.config/nnn/.selection
resp=f
if [ -s "$selection" ]; then
echo -n "work with selection (s) or current file (f) [default=f]: "
read resp
fi
if [ "$resp" = "s" ]; then
file=$(basename "$(cat $selection | tr '\0' '\n' | head -n 1)").md5
cat "$selection" | sed 's|'"$PWD/"'||g' | xargs -0 -i md5sum {} > "$file"
else
if ! [ -z "$1" ] && [ -f "$1" ]; then
if [ $(echo $1 | grep \.md5$) ]; then
cat "$1" | md5sum -c
read
else
file=$(basename "$1").md5
md5sum "$1" > "$file"
fi
fi
fi
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