I have a directory (~/temp/) that contains many files and sub directories, and in some directories, they may contain other files and sub directories. Also, in the directory (~/temp/), it contains a special txt file with name kept.txt, it list some direct files and sub directories that contained in ~/temp/, now i want to delete all other files and directories under ~/temp/ that are not listed in the kept.txt file, how to do this with a shell command, the simpler the better.
e.g.
The directory likes as below:
$ tree temp/ -F
temp/
├── a/
├── b/
├── c/
│ ├── f2.txt
│ └── z/
├── f1.txt
└── kept.txt
The content of kept.txt is:
$ more kept.txt
b
kept.txt
For this case:
a/, c/ and f1.txt. For c/, the directory itself and all sub content (files and directories) will be deleted.kept.txt, the format is one item (file or directory) per line.Using extglob you can do this:
cd temp
shopt -s extglob
rm -rf !($(printf "%s|" $(<kept.txt)))
printf "%s|" $(<kept.txt) will provide output as b|kept.txt| and !(...) is an extended glob pattern to negate the match.
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