bash 如何在不解压缩和重新压缩它们的情况下重命名 zip 存档中的文件？
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How to rename files in zip archive without extracting and recompressing them?
提问by Topo
I need to rename all the files on a zip file from AAAAA-filename.txtto BBBBB-filename.txt, and I want to know if I can automate this task without having to extract all files, rename and then zip again. Unzipping one at a time, renaming and zipping again is acceptable.
我需要在所有的压缩文件中的文件从命名AAAAA-filename.txt到BBBBB-filename.txt了，我想知道如果我可以，而不必提取所有文件，重命名自动执行此任务，然后再压缩。一次解压缩一个，重命名并再次压缩是可以接受的。
What I have now is:
我现在拥有的是：
for file in *.zip
do
unzip $file
rename_txt_files.sh
zip *.txt $file
done;
But I don't know if there is a fancier version of this where I don't have to use all that extra disk space.
但我不知道是否有更高级的版本，我不必使用所有额外的磁盘空间。
回答by amdixon
plan
计划
- find offsets of filenames with strings
- use dd to overwrite new names ( note will only work with same filename lengths ). otherwise would also have to find and overwrite the filenamelength field..
- 用字符串查找文件名的偏移量
- 使用 dd 覆盖新名称（注意仅适用于相同的文件名长度）。否则还必须找到并覆盖文件名长度字段..
backup your zipfile before trying this
在尝试之前备份您的 zipfile
zip_rename.sh
zip_rename.sh
#!/bin/bash
strings -t d test.zip | \
grep '^\s\+[[:digit:]]\+\sAAAAA-\w\+\.txt' | \
sed 's/^\s\+\([[:digit:]]\+\)\s\(AAAAA\)\(-\w\+\.txt\).*$/ BBBBB/g' | \
while read -a line; do
line_nbr=${line[0]};
fname=${line[1]};
new_name=${line[2]};
len=${#fname};
# printf "line: "$line_nbr"\nfile: "$fname"\nnew_name: "$new_name"\nlen: "$len"\n";
dd if=<(printf $new_name"\n") of=test.zip bs=1 seek=$line_nbr count=$len conv=notrunc
done;
output
输出
$ ls
AAAAA-apple.txt AAAAA-orange.txt zip_rename.sh
$ zip test.zip AAAAA-apple.txt AAAAA-orange.txt
adding: AAAAA-apple.txt (stored 0%)
adding: AAAAA-orange.txt (stored 0%)
$ ls
AAAAA-apple.txt AAAAA-orange.txt test.zip zip_rename.sh
$ ./zip_rename.sh
15+0 records in
15+0 records out
15 bytes (15 B) copied, 0.000107971 s, 139 kB/s
16+0 records in
16+0 records out
16 bytes (16 B) copied, 0.000109581 s, 146 kB/s
15+0 records in
15+0 records out
15 bytes (15 B) copied, 0.000150529 s, 99.6 kB/s
16+0 records in
16+0 records out
16 bytes (16 B) copied, 0.000101685 s, 157 kB/s
$ unzip test.zip
Archive: test.zip
extracting: BBBBB-apple.txt
extracting: BBBBB-orange.txt
$ ls
AAAAA-apple.txt BBBBB-apple.txt test.zip
AAAAA-orange.txt BBBBB-orange.txt zip_rename.sh
$ diff -qs AAAAA-apple.txt BBBBB-apple.txt
Files AAAAA-apple.txt and BBBBB-apple.txt are identical
$ diff -qs AAAAA-orange.txt BBBBB-orange.txt
Files AAAAA-orange.txt and BBBBB-orange.txt are identical
