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#! /bin/sh # rename files to lower/upper case... # # usage: # move-to-lower * # move-to-upper * # or # move-to-lower -R . # move-to-upper -R . #
help() { cat << eof Usage: $0 [-n] [-r] [-h] files...
-n do nothing, only see what would be done -R recursive (use find) -h this message files files to remap to lower case
Examples: $0 -n * (see if everything is ok, then...) $0 *
$0 -R .
eof }
apply_cmd='sh' finder='echo "$@" | tr " " "\n"' files_only=
while : do case "$1" in -n) apply_cmd='cat' ;; -R) finder='find "$@" -type f';; -h) help ; exit 1 ;; *) break ;; esac shift done
if [ -z "$1" ]; then echo Usage: $0 [-h] [-n] [-r] files... exit 1 fi
LOWER='abcdefghijklmnopqrstuvwxyz' UPPER='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
case `basename $0` in *upper*) TO=$UPPER; FROM=$LOWER ;; *) FROM=$UPPER; TO=$LOWER ;; esac
eval $finder | sed -n '
# remove all trailing slashes s/\/*$//
# add ./ if there is no path, only a filename /\//! s/^/.\//
# save path+filename h
# remove path s/.*\///
# do conversion only on filename y/'$FROM'/'$TO'/
# now line contains original path+file, while # hold space contains the new filename x
# add converted file name to line, which now contains # path/file-name\nconverted-file-name G
# check if converted file name is equal to original file name, # if it is, do not print nothing /^.*\/\(.*\)\n\1/b
# now, transform path/fromfile\n, into # mv path/fromfile path/tofile and print it s/^\(.*\/\)\(.*\)\n\(.*\)$/mv \1\2 \1\3/p
' | $apply_cmd
Next: Print bash environment, Previous: Increment a number, Up: Examples [Contents][Index]