移動新創建的文件

Question

我有以下代碼，並在轉碼完成後，我希望移動新創建的文件。但是之後，我不想在轉碼時寫入其他文件夾。這就是爲什麼我認爲使用exec更好，因爲如果以前的exec讀取爲真，只會處理它。另請注意，當前文件夾中可能存在多個文件。

#!/bin/bash 
# 
# Change this to specify a different handbrake preset. You can list them by running:  "HandBrakeCLI --preset-list" 
# 
PRESET="AppleTV 2" 
if [ -z "$1" ] ; then 
TRANSCODEDIR="/path/to/folder" 
else 
TRANSCODEDIR="$1" 
fi 
find "$TRANSCODEDIR"/* -type f -exec bash -c 'HandBrakeCLI -i "$1" -o "${1%.*}".mp4 -- preset="$PRESET"' __ {} \; -exec rm {} \; 

我的Linux的小知識，我想也許：

#!/bin/bash 
# 
# Change this to specify a different handbrake preset. You can list them by running:  "HandBrakeCLI --preset-list" 
# 
PRESET="AppleTV 2" 
if [ -z "$1" ] ; then 
TRANSCODEDIR="/path/to/folder" 
else 
TRANSCODEDIR="$1" 
fi 
find "$TRANSCODEDIR"/* -type f -exec bash -c 'HandBrakeCLI -i "$1" -o "${1%.*}".mp4 -- preset="$PRESET"' __ {} \; -exec rm {} \; -exec mv '"${1%.*}".mp4'  "/path to/converted/folder" \; 

但這只是推出：

mv: cannot stat â"${1%.*}".mpâ4: No such file or directory 

現在，我想也許這是從記事本的某些字符++躲在某處所以我通過dos2uunix運行它。但是我仍然得到相同的錯誤。現在我認爲「$ {1％。}」.mp4實際上並沒有獲得新創建的文件，而是正在尋找名爲「$ {1％。}」的文件.mp4，它不會不存在。

任何幫助，將不勝感激。

Answer 1

find不支持參數替換，你需要傳遞${1%.*}的外殼。但幸運的是，這不是很難做到：

find "$TRANSCODEDIR" -type f -exec bash -c 'HandBrakeCLI -i "$1" -o "${1%.*}".mp4 -- preset="$PRESET"; 
    rm "$1"; 
    mv "${1%.*}".mp4 "/path/to/converted/folder"' _ {} \; 

所以只是爲了澄清; 「頂級」是find -exec bash -c '...' _ {} \;，單引號內的Bash腳本包含三條命令，所有這些命令都在相同的輸入文件上運行。

Answer 2

您可以改用while read循環，並使用process substitution的重定向輸入。我對代碼中的細節發表了評論。

#!/bin/bash 

# 
# Change this to specify a different handbrake preset. You can list them by running:  "HandBrakeCLI --preset-list" 
# 
PRESET="AppleTV 2" 

if [[ -z $1 ]] ; then 
    TRANSCODEDIR="/path/to/file" 
else 
    TRANSCODEDIR="$1" 
fi 

while read -r FILE; do 
    echo "Converting $FILE to ${FILE%.*}.mp4." ## Optional message that could really be helpful. 
    HandBrakeCLI -i "$FILE" -o "${FILE%.*}".mp4 && rm "$FILE" ## Remove file only if process was successful (HandBrakeCLI returns zero return code). 
done < <(exec find "$TRANSCODEDIR"/ -type f) ## No need to specify * and do pathname expansions since we're searching it recursively anyway. 

UPDATE：

#!/bin/bash 

# 
# Change this to specify a different handbrake preset. You can list them by running:  "HandBrakeCLI --preset-list" 
# 
PRESET="AppleTV 2" 

SOURCEDIR=. 

if [[ -z $1 ]] ; then 
    TRANSCODEDIR="/path/to/dir" 
else 
    TRANSCODEDIR="$1" 
fi 

SOURCEDIR=${SOURCEDIR%/}/ 
OFFSET=${#SOURCEDIR} 

while read -r FILE; do 
    SUBPART=${FILE:OFFSET} 

    # Prepare target directory. We create subdirectories to prevent conflict within files having the same name. 

    TDIR=${SUBPART%/*} 
    TDIR=${TRANSCODEDIR%/}/$TDIR 

    mkdir -p "$TDIR" || { 
     echo "Unable to create $TDIR." 
     continue ## Continue loop if we can't create the directory." 
    } 

    # Convert 

    TFILE=${SUBPART%.*}.mp4 
    TFILE=${TRANSCODEDIR%/}/$TFILE 

    echo "Converting $FILE to $TFILE." ## Optional message that could really be helpful. 
    HandBrakeCLI -i "$FILE" -o "$TFILE" && rm "$FILE" ## Remove file only if process was successful (HandBrakeCLI returns zero return code). 
done < <(exec find "$SOURCEDIR" -type f) ## No need to specify * and do pathname expansions since we're searching it recursively anyway.