You can pass a directory as a target to grep with -R and a file of input patterns with -f:

 -f FILE, --file=FILE Obtain patterns from FILE, one per line. If this option is used multiple times or is combined with the -e (--regexp) option, search for all patterns given. The empty file contains zero patterns, and therefore matches nothing. -R, --dereference-recursive Read all files under each directory, recursively. Follow all symbolic links, unlike -r. 

So, you're looking for:

grep -Ff subset.txt -r objects/ 

You can get the list of matching files with:

grep -Flf subset.txt -r objects/ 

So, if your final list isn't too long, you can just do:

 mv $(grep -Flf subset.txt -r objects/) new_dir/ 

If that returns an argument list too long error, use:

grep -Flf subset.txt -r objects/ | xargs -I{} mv {} bar/ 

And if your file names can contain spaces or other strange characters, use (assuming GNU grep):

grep -Fzlf subset.txt -r objects/ | xargs -0I{} mv {} bar/ 

You can pass a directory as a target to grep with -R and a file of input patterns with -f:

 -f FILE, --file=FILE Obtain patterns from FILE, one per line. If this option is used multiple times or is combined with the -e (--regexp) option, search for all patterns given. The empty file contains zero patterns, and therefore matches nothing. -R, --dereference-recursive Read all files under each directory, recursively. Follow all symbolic links, unlike -r. 

So, you're looking for:

grep -Ff subset.txt -r objects/ 

You can get the list of matching files with:

grep -Flf subset.txt -r objects/ 

So, if your final list isn't too long, you can just do:

 mv $(grep -Flf subset.txt -r objects/) new_dir/ 

If that returns an argument list too long error, use:

grep -Flf subset.txt -r objects/ | xargs -I{} mv {} bar/ 

And if your file names can contain spaces or other strange characters, use (assuming GNU grep):

grep -FZlf subset.txt -r objects/ | xargs -0I{} mv {} bar/ 

Finally, if you want to exclude binary files, use:

grep -IFZlf subset.txt -r objects/ | xargs -0I{} mv {} bar/ 

You can pass a directory as a target to grep with -R and a file of input patterns with -f:

 -f FILE, --file=FILE Obtain patterns from FILE, one per line. If this option is used multiple times or is combined with the -e (--regexp) option, search for all patterns given. The empty file contains zero patterns, and therefore matches nothing. -R, --dereference-recursive Read all files under each directory, recursively. Follow all symbolic links, unlike -r. 

So, you're looking for:

grep -f subset.txt -r /objects/ 

You can pass a directory as a target to grep with -R and a file of input patterns with -f:

 -f FILE, --file=FILE Obtain patterns from FILE, one per line. If this option is used multiple times or is combined with the -e (--regexp) option, search for all patterns given. The empty file contains zero patterns, and therefore matches nothing. -R, --dereference-recursive Read all files under each directory, recursively. Follow all symbolic links, unlike -r. 

So, you're looking for:

grep -Ff subset.txt -r objects/ 

You can get the list of matching files with:

grep -Flf subset.txt -r objects/ 

So, if your final list isn't too long, you can just do:

 mv $(grep -Flf subset.txt -r objects/) new_dir/ 

If that returns an argument list too long error, use:

grep -Flf subset.txt -r objects/ | xargs -I{} mv {} bar/ 

And if your file names can contain spaces or other strange characters, use (assuming GNU grep):

grep -Fzlf subset.txt -r objects/ | xargs -0I{} mv {} bar/