Ash MATCH运算符(=〜)

时间:2012-04-29 15:51:59

标签: linux bash ash

我正在尝试将适用于Linux的脚本放到我的WD世界版驱动器上。

脚本是为Bash(debian)编写的,但我的WD只运行busybox(带灰)。尽管如此,我还是通过使用Google获得了大部分功能。只有一个运算符我找不到对应的=〜运算符

如何将=〜运算符的功能从旧脚本移植到ash?

脚本:

#! /bin/bash
# posttorrent.sh by Killemov
{
  # Log file, file where we tell what events have been processed.
  LOG_FILE=/var/log/posttorrent.log
  # Username for transmission remote.
  TR_USERNAME="username"
  # Password for transmission remote.
  TR_PASSWORD="password"
  # Get current time.
  NOW=$(date +%Y-%m-%d\ %H:%M:%S)
  # Source directory, should not be changed.
  SRC_DIR="${TR_TORRENT_DIR}/${TR_TORRENT_NAME}"
  # Directory to store the un-compressed files in..
  DEST_DIR="${TR_TORRENT_DIR}/${TR_TORRENT_NAME}/"
  # This parameter string could be passed from Transmission in the future.
  TR_TORRENT_PARAMETER="EXTRACT SLEEP1h"

echo "text"
  if [ -e "$SRC_DIR/keep" ]; then
    TR_TORRENT_PARAMETER="$TR_TORRENT_PARAMETER KEEP"
  fi

  if [ -e "$SRC_DIR/exit" ]; then
    TR_TORRENT_PARAMETER="EXIT"
  fi

  # Actual processing starts here.
  if [[ "$TR_TORRENT_PARAMETER" =~ "EXIT" ]]; then
    echo $NOW "Exiting $TR_TORRENT_NAME" >> $LOG_FILE
    exit 0
  fi
echo "text2"
  if [[ "$TR_TORRENT_PARAMETER" =~ "EXTRACT" ]]; then
    cd $TR_TORRENT_DIR
    if [ -d "$SRC_DIR" ]; then
      IFS=$'\n'
      unset RAR_FILES i
      for RAR_FILE in $( find "$SRC_DIR" -iname "*.rar" ); do
        if [[ $RAR_FILE =~ .*part.*.rar ]]; then
          if [[ $RAR_FILE =~ .*part0*1.rar ]]; then
            RAR_FILES[i++]=$RAR_FILE
          fi
        else
          RAR_FILES[i++]=$RAR_FILE
        fi
      done
      unset IFS

      if [ ${#RAR_FILES} -gt 0 ]; then
        for RAR_FILE in "$(eval \$$RAR_FILES[@])"; do
          unrar x -inul "$RAR_FILE" "$DEST_DIR"
          if [ $? -gt 0 ]; then
            echo $NOW "Error unrarring $TR_TORRENT_NAME" >> $LOG_FILE
            transmission-remote -n $TR_USERNAME:$TR_PASSWORD -t$TR_TORRENT_ID --verify --start
            exit 0
          fi
        done
        if [[ ! "$TR_TORRENT_PARAMETER" =~ "KEEP" ]]; then
          SLEEP=$(expr match "$TR_TORRENT_PARAMETER" '.*SLEEP\([0-9a-zA-Z]*\)')
          if [ ${#SLEEP} -gt 0 ]; then
            sleep $SLEEP
          fi
          transmission-remote -n $TR_USERNAME:$TR_PASSWORD -t$TR_TORRENT_ID --remove-and-delete
        fi
        echo $NOW "Unrarred $TR_TORRENT_NAME" >> $LOG_FILE
      fi
    fi
  fi
} &

(我对间接引用有些麻烦,我希望我能正确修复)

1 个答案:

答案 0 :(得分:0)

对于$VARIABLE =~ PATERN,您应该可以使用:

echo "$VARIABLE" | grep -E PATTERN

但是我认为你的算术表达式i++也会遇到一些麻烦 - 如果它已经实现了,那么你仍然需要使用i=$(($i + 1))语法,如果它没有实现,那么i=$(expr $i + 1)语法。

我认为你是IFS = $'\ n'的理由是在新行上拆分查找,但你可能最好将find发布到一个临时文件中,然后执行{{1} },

此外,我不确定所有版本的busybox ash是否支持数组,因此您可能也遇到问题。