convert single digit to double digits

for f ([0-9].txt) zmv $f '${(l:1::0:)}'$f
zsh: add leading zero ... altogether pointless, as there can only be a maximum of 10 'single digit' files, and so a maximum of 10 files the command can act on. Padding further zeros will produce '0010', '001' and so break sequance. The only proper method is to itterate the numbers like so: i=1; for f (*) zmv $f '${(l:3::0:)$((++i))}'.txt but this has the unfortunate side effect of incrementing the values by 1 ... which may not be desirable.
Sample Output
% touch {1-9}.txt 10.txt
% for f (*.txt) zmv $f '${(l:1::0:)}'$f
% ls

By: khayyam
2013-03-22 01:53:42

7 Alternatives + Submit Alt

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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