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#!/bin/bash
#FILES=$(ls *.gmi)
SAVE_EXTENSION='original_time'
show_usage() {
echo "Usage: $0 OPTION FILE..."
echo "Save or restore the original timestamps of a collection of files."
echo
echo " save - save the original timestamps of files"
echo " restore - restore the original timestamps of files"
echo
}
save_timestamps() {
for file in "$@"
do
touch -amr $file $file.$SAVE_EXTENSION
echo "$file timestamps saved to $file.$SAVE_EXTENSION"
done
}
restore_timestamps() {
ls *.$SAVE_EXTENSION > /dev/null 2>&1
if [[ $? -gt 0 ]]; then
echo "error: could not find stored timestamps"
exit 1
fi
for file in $(ls *.$SAVE_EXTENSION)
do
if [[ ${file::-$((${#SAVE_EXTENSION} + 1))} -nt $file ]]; then
touch -amr $file ${file::-$((${#SAVE_EXTENSION} + 1))}
echo "${file::-$((${#SAVE_EXTENSION} + 1))} timestamps restored from $file"
fi
rm $file
done
}
if [[ -z $1 || -z $2 ]]; then
show_usage
else
if [[ $1 == "save" ]]; then
shift
save_timestamps "$@"
elif [[ $1 == "restore" ]]; then
restore_timestamps
else
show_usage
fi
fi
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