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rename-only.sh
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rename-only.sh
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#!/usr/bin/env bash
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## rename-ext
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# > changes file-extension based on mime-type
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## also
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# - removes `*?|^:"<>` characters from the file-name
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# - reducing multiple spaces, dots, and underscores
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# - adds rename-date suffix to ensure uniquness of the filename
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# - strips exec-flag from non-executive types (usual leftover from FAT/NTFS)
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# - optimizes images while at it (shows reduction size in `kb` and `%`)
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## example
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# rename-ext /Data/Pictures/_unsorted/**/*
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## requires
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# - file - to determine file type
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# - `cargo install sd` – better sed
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ALL_EXTS=`echo \
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'gif|jpe?g|jp2|jfif|a?png|web(p|m)|svg
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|eps|tga|tiff?|psd|ico|xcf|heic
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|eot|otf|ttf|epub|doc|docx|xls|swf|pdf|odt
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|flac|opus|ogg|m4a|wav
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|mpe?g|mp\d|mov|mkv|avif?|asf|3gpp?|av1
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|html?|sh|py|php
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' \
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| tr -d '[:space:]' \
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`
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mkdir -p ~/tmp
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OPTIONS=''
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CHX_CHANGELOG=''
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NR='1'
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calc_reduction()
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{
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SIZE_PRE="$1"
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SIZE_POST="$2"
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PERECENT=` echo "scale=2; 100 - (100 * $SIZE_POST / $SIZE_PRE)" | bc `
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RESULT="$(( $SIZE_PRE / 1000 ))-$(( ( $SIZE_PRE - $SIZE_POST ) / 1000 )) kb \
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($PERECENT%)
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"
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echo "$RESULT"
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}
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ch_x()
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{
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FILENAME="$1"
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# echo "FILENAME = '$FILENAME'"
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CHX_CHANGELOG=''
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IS_X_INTENDED='0'
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if [ ! -z "$2" ]; then
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IS_X_INTENDED='1'
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fi
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# echo "IS_X_INTENDED = '$IS_X_INTENDED'"
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IS_X=`stat -c '%A' "$FILENAME" | grep 'x' | wc -l`
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# echo "IS_X = '$IS_X'"
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MODE='-x'
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if [[ '1' == "$IS_X_INTENDED" ]]; then
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MODE='+x'
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fi
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# echo "MODE = '$MODE'"
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if [[ ! "$OPTIONS" =~ 'test-run' ]]; then
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# echo '(not a test-run)'
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if [[ ! "$OPTIONS" =~ 'only-ext' ]]; then
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# echo '(not only-ext)'
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if [[ ! "$IS_X" == "$IS_X_INTENDED" ]]; then
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CHX_CHANGELOG="chmod $MODE"
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fi
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chmod "$MODE" "$FILENAME"
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fi
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fi
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}
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rename_ext()
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{
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NAME="$1"
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EXT="$2"
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NOTE=''
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TARGET=''
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ch_x "$FILENAME"
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if [[ "$OPTIONS" =~ 'only-ext' ]]; then
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NAME_NO_EXT=` echo "$NAME" \
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| sd -f i "(\.+($ALL_EXTS))$" '' \
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`
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TARGET="$NAME_NO_EXT.$EXT"
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else
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if [[ ! "$OPTIONS" =~ 'test-run' ]]; then
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SIZE_PRE=` stat "$FILENAME" -c '%s' `
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if [ 'png' = "$EXT" ]; then
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mogrify "$FILENAME"
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if [ -f "$FILENAME.tmp.png" ] \
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&& [ -s "$FILENAME.tmp.png" ]
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then
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mv "$FILENAME.tmp.png" "$FILENAME"
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else
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rm "$FILENAME.tmp.png"
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fi
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fi
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SIZE_POST=` stat "$FILENAME" -c '%s' `
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[ $SIZE_PRE -gt $SIZE_POST ] \
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&& NOTE=` calc_reduction "$SIZE_PRE" "$SIZE_POST" `
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fi
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DATE=` date -r "$NAME" -u "+%Y%m%d%H%M%S" `
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TCLEAN=` echo "$NAME" \
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| sd '[\\\?\*\|^:"<>]+' '_' \
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| sd '_\d{12,}\.' '.' \
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| sd -f i "(\.+($ALL_EXTS))+$" '' \
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`
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TARGET=` echo "${TCLEAN}_$DATE.$EXT" \
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| sd '([\s\.,_]){3,}' '$1' \
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`
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fi
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IS_SAME_NAME='0'
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if [[ "$NAME" == "$TARGET" ]]; then
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IS_SAME_NAME='1'
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fi
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# echo "IS_SAME_NAME = '$IS_SAME_NAME'"
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# echo "CHX_CHANGELOG = '$CHX_CHANGELOG'"
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if [[ '1' == "$IS_SAME_NAME" ]] \
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&& [ -z "$CHX_CHANGELOG" ]
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then
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return
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fi
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echo "$NR:"
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NR="$(($NR+1))"
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echo " $FILENAME"
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if [ ! -z "$CHX_CHANGELOG" ]; then
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echo " $CHX_CHANGELOG"
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CHX_CHANGELOG=''
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fi
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if [[ '1' == "$IS_SAME_NAME" ]]; then
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return
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fi
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if [[ "$OPTIONS" =~ 'test-run' ]]; then
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if [ -f "$TARGET" ]; then
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if [[ "$PARAMS" =~ 'force-replace' ]]; then
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echo " >> replacing existing file >>"
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else
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echo " !! file already exist !!"
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fi
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fi
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echo "$TARGET"
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else
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if [ ! -f "$TARGET" ]; then
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echo " >> $NOTE >>"
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echo " $TARGET"
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mv "$NAME" "$TARGET"
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else
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if [[ "$PARAMS" =~ 'force-replace' ]]; then
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echo " >> $NOTE ## replacing existing file >>"
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echo " $TARGET"
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mv "$NAME" "$TARGET"
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else
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echo ' !! File already exist, use `--force-replace` to overwrite !! '
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echo " $TARGET"
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fi
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fi
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fi
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}
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for PARAM in "$@"; do
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# echo "PARAM = '$PARAM'"
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if [[ '--only-ext' == "$PARAM" ]]; then
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OPTIONS="$OPTIONS;only-ext"
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# echo "OPTIONS = '$OPTIONS'"
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elif [[ '--test-run' == "$PARAM" ]]; then
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OPTIONS="$OPTIONS;test-run"
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# echo "OPTIONS = '$OPTIONS'"
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elif [[ '--force-replace' == "$PARAM" ]]; then
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OPTIONS="$OPTIONS;force-replace"
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# echo "OPTIONS = '$OPTIONS'"
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fi
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done
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[ ! -z "$OPTIONS" ] \
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&& echo "OPTIONS: '$OPTIONS'"
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# echo "@ = '$@'"
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for FILENAME in "$@"; do
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# echo "FILENAME = '$FILENAME'"
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# NOT_F_=`[ ! -f "$FILENAME" ]`
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# echo "NOT_F_ = '$NOT_F_'"
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# [ ! -f "$FILENAME" ] \
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# && continue
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FILE_TYPE=` file -b --mime-type "$FILENAME" `
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# echo "FILE_TYPE = '$FILE_TYPE'"
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case "$FILE_TYPE" in
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# pixel-based
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'image/gif') rename_ext "$FILENAME" 'gif' ;;
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'image/jpeg') rename_ext "$FILENAME" 'jpg' ;;
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'image/jp2') rename_ext "$FILENAME" 'jp2' ;;
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'image/png') rename_ext "$FILENAME" 'png' ;;
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'image/webp') rename_ext "$FILENAME" 'webp' ;;
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'image/avif') rename_ext "$FILENAME" 'avif' ;;
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# vector-based
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'image/svg+xml') rename_ext "$FILENAME" 'svg' ;;
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'image/x-eps') rename_ext "$FILENAME" 'eps' ;;
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# some less common image formats
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'image/heic') rename_ext "$FILENAME" 'heic' ;;
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'image/tiff') rename_ext "$FILENAME" 'tiff' ;;
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'image/vnd.adobe.photoshop') rename_ext "$FILENAME" 'psd' ;;
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'image/vnd.microsoft.icon') rename_ext "$FILENAME" 'ico' ;;
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'image/x-tga') rename_ext "$FILENAME" 'tga' ;;
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'image/x-xcf') rename_ext "$FILENAME" 'xcf' ;;
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# fonts
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'application/vnd.ms-fontobject') rename_ext "$FILENAME" 'eot' ;;
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'application/vnd.ms-opentype') rename_ext "$FILENAME" 'otf' ;;
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'font/sfnt') rename_ext "$FILENAME" 'ttf' ;;
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# documents
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'application/epub+zip') rename_ext "$FILENAME" 'epub' ;;
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'application/msword') rename_ext "$FILENAME" 'doc' ;;
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'application/pdf') ch_x "$FILENAME" ;; # can be .ai
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'application/vnd.ms-excel') rename_ext "$FILENAME" 'xls' ;;
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'application/vnd.oasis.opendocument.text') rename_ext "$FILENAME" 'odt' ;;
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'application/vnd.openxmlformats-officedocument.wordprocessingml.document') rename_ext "$FILENAME" 'docx' ;;
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'application/x-shockwave-flash') rename_ext "$FILENAME" 'swf' ;;
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# audio
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'audio/flac') rename_ext "$FILENAME" 'flac' ;;
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'audio/mpeg') rename_ext "$FILENAME" 'mp3' ;;
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'audio/ogg') rename_ext "$FILENAME" 'ogg' ;;
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'audio/x-m4a') rename_ext "$FILENAME" 'm4a' ;;
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'audio/x-wav') rename_ext "$FILENAME" 'wav' ;;
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# video
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'video/3gpp') rename_ext "$FILENAME" '3gp' ;;
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'video/av1') rename_ext "$FILENAME" 'avi' ;;
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'video/MP2T') rename_ext "$FILENAME" 'mp2' ;;
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'video/mp4') rename_ext "$FILENAME" 'mp4' ;;
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'video/quicktime') rename_ext "$FILENAME" 'mov' ;;
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'video/webm') rename_ext "$FILENAME" 'webm' ;;
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'video/x-m4v') rename_ext "$FILENAME" 'mp4' ;;
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'video/x-matroska') rename_ext "$FILENAME" 'mkv' ;;
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'video/x-ms-asf') rename_ext "$FILENAME" 'asf' ;;
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# text
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'application/json') ch_x "$FILENAME" ;; # can be any other language
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'text/html') ch_x "$FILENAME" ;; # can be .htm, .htc, .mht, ...
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'text/xml') ch_x "$FILENAME" ;; # can be .xml, .opml, .rss, ...
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'text/plain') ;; # can be any file with not enough text
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'text/x-python') ;; # can be .py, .py3, have no .ext
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'text/x-shellscript') ;; # can be .sh, .zsh, have no .ext
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# binady data
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'application/x-sqlite3') ch_x "$FILENAME" ;; # can be .db, .sql, .sq3
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# special
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'application/octet-stream') ;; # can be anything
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'inode/directory')
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# echo "$FILENAME is a folder"
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# echo "about to ch_x"
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ch_x "$FILENAME" '+'
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;; # a folder
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'inode/x-empty') ch_x "$FILENAME" ;; # zero-size
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# default
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*) echo "?? $FILENAME : $FILE_TYPE" ;;
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esac
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done
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# if [[ "@#" -eq 1 ]]; then
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# if [[ `file -b --mime-type "$1"` == "inode/directory" ]]; then
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# find "$1"
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# fi
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# fi
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