Question

我已经为raspberry pi编写了一个bash脚本，它将一些文件复制到USB设备，然后将它们移动到硬盘上的新文件夹中。当插入USB设备时，它将通过udev规则进行安装，然后执行复制/移动脚本。如果我等待5秒左右，它的效果非常好。

为了获得更好的反馈，何时拔下设备，我在开始时打开了一个LED，在结束时关闭了。这不行！在那之后不久，领导就开始了。那时不复制文件！我必须等待另外5秒，然后一切都很好。为什么？该脚本应该是序列化的，还是我错了？

这里是剧本：

#!/bin/bash

# Enable LED
/home/pi/project/src/led.sh 8 1
data="/home/pi/project/data/"
olddata="/home/pi/project/data/olddata/"
backup="/media/usbstick/backup/"
dateFolder=""

# Get current time
t=$(date +"%y-%m-%d_%H-%M")
# Check backup directory
if [ ! -d "$backup" ]; then
        mkdir $backup
fi
dateFolder="${backup}backup_${t}/"

# Check dataFolder directory
if [ ! -d "$dateFolder" ]; then
        mkdir $dateFolder
fi
# Check olddatq directory
if [ ! -d "$olddata" ]; then
        mkdir $olddata
fi
# First copy all data to usb stick
find "${data}" -maxdepth 1  -mindepth 1 ! -iname "olddata" \
| xargs -I {}  cp -r {} $dateFolder   
# Then move the data to olddata
find "${data}" -maxdepth 1  -mindepth 1 ! -iname "olddata" \
| xargs -I {} mv {}  $olddata

# Disable red LED, enable green
/home/pi/project/src/led.sh 8 0
/home/pi/project/src/led.sh 7 1

Answer 1

在最后添加同步解决了它。感谢Jite

# Enable LED
/home/pi/project/src/led.sh 8 1

data="/home/pi/project/data/"
olddata="/home/pi/project/data/olddata/"
backup="/media/usbstick/backup/"
dateFolder=""

# Get current time
t=$(date +"%y-%m-%d_%H-%M")

# Check backup directory
if [ ! -d "$backup" ]; then
        mkdir $backup
fi
dateFolder="${backup}backup_${t}/"

# Check dataFolder directory
if [ ! -d "$dateFolder" ]; then
        mkdir $dateFolder
fi
# Check olddatq directory
if [ ! -d "$olddata" ]; then
        mkdir $olddata
fi

# First copy all data to usb stick
find "${data}" -maxdepth 1  -mindepth 1 ! -iname "olddata" \
| xargs -I {}  cp -r {} $dateFolder   
# Then move the data to olddata
find "${data}" -maxdepth 1  -mindepth 1 ! -iname "olddata" \
| xargs -I {} mv {}  $olddata

sync

# Disable red LED, enable green
/home/pi/project/src/led.sh 8 0
/home/pi/project/src/led.sh 7 1

Bash脚本不等待cp

1 个答案: