您if [ "$file_hash" == "$a" ];将哈希与文件名进行比较。你需要类似的东西
if [ "$file_hash" == $(md5sum "$a" | cut -d ' ' -f 1) ];
此外，在当前版本中，您的for循环仅运行一次；你需要像
for a in $destination_folder/*
#!/bin/bash -xv
file=$1
destination_folder=$2
file_hash=`md5sum "$file" | cut -d ' ' -f 1`
# test that the filename exists in the destination dir
if [[ -f $destination_folder/$file ]] ; then
dest_hash=$(md5sum "$destination_folder/$file" | cut -d ' ' -f 1)
# test that the hash is the same
if [[ "$file_hash" == $curr_hash ]] ; then
cp "$file.JPG" "$destination_folder/$file.JPG"
else
# do nothing
fi
else
# destination does not exit, copy file
cp "$file.JPG" "$destination_folder/$file"
fi
这不能确保没有重复项。它只是确保具有相同名称的不同文件不会相互覆盖。
#!/bin/bash -xv
file=$1
destination_folder=$2
file_hash=`md5sum "$file" | cut -d ' ' -f 1`
# test each file in destination
for a in $destination_folder/*
do
curr_hash=$(md5sum "$a" | cut -d ' ' -f 1)
if [ "$file_hash" == $curr_hash ];
then
# an identical file exists. (maybe under another name)
# do nothing
exists=1
break
fi
done
if [[ $exists != 1 ]] ; then
if [[ -f $destination_folder/$file ]] ; then
cp "$file.JPG" "$destination_folder/$file.JPG"
else
cp "$file.JPG" "$destination_folder"
fi
fi
未经测试。
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