bash - Change spaces with underscore in filename -

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i have multiples files space, , want replace underscore command line (mac)

xxx xxx.jpg -> xxx_xxx.jpg

it's possible line command?

for files in current directory

for in *;do mv "$i" "${i// /_}";done

if want match files spaces (to prevent tons of error messages when tries move files themselves) though use extended glob

shopt -s extglob in +(* *);do mv "$i" "${i// /_}";done

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