用于命名设备上视频的 Shell 脚本

发布于 2024-08-26 22:30:16 字数 406 浏览 10 评论 0原文

我有一个 .sh 脚本,可以自动挂载插入的任何 USB 设备。我还需要它来查找插入的设备上的某个位置是否有视频,然后将它们写入 videos.txt 文件。这是我所拥有的,但它不起作用。我还需要它将挂载点放入videos.txt 文件中。 ${MOUNTPOINT}$count 是已安装设备的路径。

VIDEOS=ls ${MOUNTPOINT}$count/dcim/100Video | grep mp4
if [ "$VIDEOS" -ne "" ] ; then
    "${MOUNTPOINT}$count" > ${MOUNTPOINT}$count/videos.txt;
    "$VIDEOS" >> ${MOUNTPOINT}$count/videos.txt;
fi

我做错了什么?

I have a .sh script that automounts any usb device that is plugged in. I need it to also find if there are videos in a certain location on the device that is plugged in then write them to a videos.txt file. Here's what I have and its not working. Also I need it to put the mountpoint in the videos.txt file. ${MOUNTPOINT}$count is the path to the mounted device.

VIDEOS=ls ${MOUNTPOINT}$count/dcim/100Video | grep mp4
if [ "$VIDEOS" -ne "" ] ; then
    "${MOUNTPOINT}$count" > ${MOUNTPOINT}$count/videos.txt;
    "$VIDEOS" >> ${MOUNTPOINT}$count/videos.txt;
fi

What am I doing wrong?

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公布 2024-09-02 22:30:16
VIDEOS=$(ls ${MOUNTPOINT}$count/dcim/100Video | grep mp4)
if [ -n "$VIDEOS" ] ; then
    echo "${MOUNTPOINT}$count" > ${MOUNTPOINT}$count/videos.txt;
    echo "$VIDEOS" >> ${MOUNTPOINT}$count/videos.txt;
fi

使用 $() 执行过程并返回一个值。使用 -n 测试来检查非零字符串。 -ne 用于检查数字。 $VIDEOS 本身是一个字符串,而不是命令。为了将值放入文件中,您应该echo它。

VIDEOS=$(ls ${MOUNTPOINT}$count/dcim/100Video | grep mp4)
if [ -n "$VIDEOS" ] ; then
    echo "${MOUNTPOINT}$count" > ${MOUNTPOINT}$count/videos.txt;
    echo "$VIDEOS" >> ${MOUNTPOINT}$count/videos.txt;
fi

use $() to execute process and return a value. use -n test to check for non-zero strings. -ne is used to check for numbers. $VIDEOS by itself is a string, not a command. in order to put a value into a file, you should echo it.

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