Shell 遍历文件夹

例1

#! /bin/bash
read_dir(){
  a=0
  declare -a arr
  for file in `ls $1`
  do
    a=$a+1
    if [ -d $1"/"$file ]
    then
      arr[$a]=$1"/"$file
      echo $1"/"$file
    fi
  done
  return $((arr))
}

result=($(read_dir $1))
# echo "aaaa:${result[*]}"
echo ${#result[@]}
for element in ${result[@]}
do
#  echo "ffmpeg -f concat -i -safe 0 $element/files.txt -c copy $element.ts"
  # 删除包含df00的行
  echo "sed -i '/df00/d' $element/files.txt"
  a='y'
  if [[ $2 = $a ]]
  then
    sed -i '/df00/d' $element/files.txt
  fi
  # 删除首行
  # echo "sed -i '1d' $element/files.txt"
  # 删除1到10行
  # echo "sed -i '1,10d' $element/files.txt"
  echo "ffmpeg -f concat -i $element/files.txt -c copy $element.ts"
  if [[ $2 = $a ]]
  then
    ffmpeg -f concat -i $element/files.txt -c copy $element.ts
  fi
  echo "rm -rf $element"
  if [[ $2 = $a ]]
  then
    rm -rf $element
  fi
  echo ""
  echo ""

done

例2

read_dir(){
  a=0
  declare -a arr
  for file in `ls $1`
  do
    a=$a+1
    if [ -f $1"/"$file ]
    then
      arr[$a]=$1"/"$file
      echo $1"/"$file
    fi
  done
  return $((arr))
}

result=($(read_dir $1))
# echo "aaaa:${result[*]}"
if [[ $1 = '.' ]]
then
    echo ${#result[@]}
    for element in ${result[@]}
    do
        filename=${element%.*}
        suffix=${element##*.}
        
        if [[ $suffix != 'ts' ]]
        then
            # echo '1'
            continue
        fi
        echo $filename  $suffix
        if [[ $2 = 'y' ]]
        then
            ffmpeg -i $element -c copy $filename.mp4
            rm -rf $element
        else
            echo "ffmpeg -i $element -c copy $filename.mp4"
            echo "rm -rf $element"
        fi
    
    done
fi