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% zmv -n 'Folder One/Image \((*)\).png' folder_two/img_${(l:2::0:)1}.png zmv: error(s) in substitution: Folder One/Image (10).png and Folder One/Image (1).png both map to folder_two/img_00.png Folder One/Image (11).png and Folder One/Image (10).png both map to folder_two/img_00.png Folder One/Image (12).png and Folder One/Image (11).png both map to folder_two/img_00.png Folder One/Image (13).png and Folder One/Image (12).png both map to folder_two/img_00.png Folder One/Image (14).png and Folder One/Image (13).png both map to folder_two/img_00.png Folder One/Image (15).png and Folder One/Image (14).png both map to folder_two/img_00.png Folder One/Image (16).png and Folder One/Image (15).png both map to folder_two/img_00.png Folder One/Image (17).png and Folder One/Image (16).png both map to folder_two/img_00.png Folder One/Image (18).png and Folder One/Image (17).png both map to folder_two/img_00.png Folder One/Image (19).png and Folder One/Image (18).png both map to folder_two/img_00.png Folder One/Image (2).png and Folder One/Image (19).png both map to folder_two/img_00.png Folder One/Image (20).png and Folder One/Image (2).png both map to folder_two/img_00.png Folder One/Image (21).png and Folder One/Image (20).png both map to folder_two/img_00.png Folder One/Image (22).png and Folder One/Image (21).png both map to folder_two/img_00.png Folder One/Image (23).png and Folder One/Image (22).png both map to folder_two/img_00.png Folder One/Image (24).png and Folder One/Image (23).png both map to folder_two/img_00.png Folder One/Image (25).png and Folder One/Image (24).png both map to folder_two/img_00.png Folder One/Image (26).png and Folder One/Image (25).png both map to folder_two/img_00.png Folder One/Image (27).png and Folder One/Image (26).png both map to folder_two/img_00.png Folder One/Image (28).png and Folder One/Image (27).png both map to folder_two/img_00.png Folder One/Image (29).png and Folder One/Image (28).png both map to folder_two/img_00.png Folder One/Image (3).png and Folder One/Image (29).png both map to folder_two/img_00.png Folder One/Image (30).png and Folder One/Image (3).png both map to folder_two/img_00.png Folder One/Image (31).png and Folder One/Image (30).png both map to folder_two/img_00.png Folder One/Image (32).png and Folder One/Image (31).png both map to folder_two/img_00.png Folder One/Image (33).png and Folder One/Image (32).png both map to folder_two/img_00.png Folder One/Image (34).png and Folder One/Image (33).png both map to folder_two/img_00.png Folder One/Image (4).png and Folder One/Image (34).png both map to folder_two/img_00.png Folder One/Image (5).png and Folder One/Image (4).png both map to folder_two/img_00.png Folder One/Image (6).png and Folder One/Image (5).png both map to folder_two/img_00.png Folder One/Image (7).png and Folder One/Image (6).png both map to folder_two/img_00.png Folder One/Image (8).png and Folder One/Image (7).png both map to folder_two/img_00.png Folder One/Image (9).png and Folder One/Image (8).png both map to folder_two/img_00.png

Why would I be getting this error?

I've tried all sorts of replacement patterns $(printf "%02d" "$1"), ${(l(2)(0))1}, and they all cause exactly the same error.

Command line to recreate my testing environment:

mkdir Folder\ One folder_two && for i in {1..33}; do touch Folder\ One/Image\ $i.png; done
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1 Answer 1

Reset to default
4

You need to quote¹ that argument for it to be passed literally to zmv so zmv itself can do the expansion:

zmv -n 'Folder One/Image \((<0-99>)\).png' \ 'folder_two/img_${(l[2][0])1}.png'

I've also replaced * with <0-99> to only replace decimal representations of numbers 0 to 99 (beware l[n] also truncates to n characters besides doing padding), and l:2::0: with l[2][0] which I find easier to read.

If you don't, that unquoted folder_two/img_${(l:2::0:)1}.png is expanded to folder_two/img_00.png by the shell (assuming $1 is empty/unset in the shell), so zmv receives Folder One/Image \((<0-99>)\).png and folder_two/img_00.png as separate arguments asking it to rename all files to the same folder_two/img_00.png, hence those errors.

¹ with strong '...' quotes ($'...' would also work), not "..." inside which expansions are still performed, and you'd still need to escape the $'s as \$.

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  • what's the difference between l[2][0] and l(2)(0)? Commented Oct 21 at 9:54
  • @Nils, (...) also works. It's a matter of preference. See info zsh flags for details. [...] works in more places than (...) as (...) are special in many contexts in Bourne-like shells. [...] also works better in the e glob qualifier as in *(e['some zsh code']), in that you don't have to worry about some zsh code containing ]. Commented Oct 21 at 10:25

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