如何在文件或目录更改时运行 shell 脚本? [英] How to run a shell script when a file or directory changes?

问题描述

我想在特定文件或目录更改时运行 shell 脚本.

I want to run a shell script when a specific file or directory changes.

我怎样才能轻松做到这一点?

How can I easily do that?

推荐答案

使用 inotify-tools.

链接的 Github 页面有许多示例；这是其中之一.

The linked Github page has a number of examples; here is one of them.

#!/bin/sh

cwd=$(pwd)

inotifywait -mr 
  --timefmt '%d/%m/%y %H:%M' --format '%T %w %f' 
  -e close_write /tmp/test |
while read -r date time dir file; do
       changed_abs=${dir}${file}
       changed_rel=${changed_abs#"$cwd"/}

       rsync --progress --relative -vrae 'ssh -p 22' "$changed_rel" 
           [e-mail]:/backup/root/dir && 
       echo "At ${time} on ${date}, file $changed_abs was backed up via rsync" >&2
done

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