我正在尝试仅将原始文件从一个目录复制到另一个目录,但是某些文件具有相同的名称…我正在尝试使用哈希来比较文件,如果其不在目录中发送并且名称相同,它到file_name.something。目前,我正在获取一些文件,并且具有相同名称的文件正在被覆盖…任何人都可以提出建议吗?
#!/bin/bash -xv source_folder=$1 destination_folder=$2 if [ $# -eq 0 ] then echo "usage:$0 directory_name";exit 999; fi if [ -d $source_folder ] then echo "source source_folder exists." else echo "Source folder doesn't exist" exit 1; fi if [ -d $destination_folder ] then echo "Destination folder exists" else mkdir $destination_folder fi find "$source_folder" -name "IMG_[0-9][0-9][0-9][0-9].JPG" -exec ./check {} $destination_folder/ \; #!/bin/bash -xv file=$1 destination_folder=$2 file_hash=`md5sum "$file" | cut -d ' ' -f 1` for a in $destination_folder/* do curr_hash=$(md5sum "$a" | cut -d ' ' -f 1) curr_file=$a if [ ! "$file_hash" == "$curr_hash" ]; then if [[ -f $destination_folder/$file ]] ; then # CAN ANYBODY TELL ME WHY IT IGNORES THIS LINE cp "$file" "$file.JPG" mv "$file.JPG" "$destintion_folder" else # IT GOES STRAIGHT FOR THIS ONE cp "$file" "$destination_folder" fi fi done
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 [ "$file_hash" == "$a" ];
if [ "$file_hash" == $(md5sum "$a" | cut -d ' ' -f 1) ];
计算目标文件夹中每个文件的哈希值。
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/*
获取该文件夹中的所有文件,而不仅仅是文件夹名称。
根据您的修改,解决方案看起来像
#!/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。