的inotify和bash [英] inotify and bash

问题描述

我试图与inotify工具，将监视一个目录，并删除含有EE线改变所有新文件的bash脚本。一旦改变，将文件移动到另一个目录

I am trying to make a bash script with inotify-tools that will monitor a directory and alter all new files by removing lines containing "EE". Once altered it will move the files to another directory

    #!/bin/sh
    while inotifywait -e create /home/inventory/initcsv; do
      sed '/^\"EE/d' Filein > fileout #how to capture File name?
      mv fileout /home/inventory/csvstorage
    fi
    done

请帮忙？

推荐答案

默认情况下， inotifywait -e输出的文本CREATE 是形式

     watched_filename CREATE event_filename

其中， watched_filename 重新presents /家庭/库存/ initcsv 和 event_filename 重新presents新的文件名。

where watched_filename represents /home/inventory/initcsv and event_filename represents the name of the new file.

因此​​，在地方你的而inotifywait -e ... 行，放：

So, in place of your while inotifywait -e ... line, put:

    DIR=/home/inventory/initcsv
    while RES=$(inotifywait -e create $DIR); do
        F=${RES#?*CREATE }

和在 SED 在线使用 $ F 为 FILEIN 名称。请注意，在 $（...）建设进程替换（使用反引号经常做）和 $ {＃RES模式的POSIX兼容的形式} 结果等于 $ RES 去掉最短的模式匹配preFIX。注意，图案的最后一个字符是一个空白。 [见更新2] 的

and in your sed line use $F as the Filein name. Note, the $(...) construction is posix-compatible form of process substitution (often done using backticks) and the ${RES#pattern} result is equal to $RES with the shortest pattern-matching prefix removed. Note, the last character of the pattern is a blank. [See update 2]

更新1 ：要处理的sed的线上使用$ F而不是可能包含空格的文件名， $ F 。也就是说，使用双引号围绕提及的˚F。

Update 1 To handle file names that may contain whitespace, in the sed line use "$F" instead of $F. That is, use double quotes around the reference to value of F.

的 RES = ... 和 F = ... 定义不需要使用双引号，但它是确定如果你喜欢使用它们;例如： F = $ {？RES＃* CREATE} 和 F =$ {？RES＃* CREATE}处理包含空格的文件名都的时候将工作正常。

The RES=... and F=... definitions do not need to use double quotes, but it is ok to use them if you like; for example: F=${RES#?*CREATE } and F="${RES#?*CREATE }" both will work ok when handling filenames containing whitespace.

更新2 作为大安的评论指出， inotifywait 有一个 - 格式参数，控制其输出的形式。随着命令

Update 2 As noted in Daan's comment, inotifywait has a --format parameter that controls the form of its output. With command

while RES=$(inotifywait -e create $DIR --format %f .)
   do echo RES is $RES at `date`; done

在一个终端和运行命令

touch a aa; sleep 1; touch aaa;sleep 1; touch aaaa

在另一个终端上运行，下面的输出出现在第一终端

running in another terminal, the following output appeared in the first terminal:

Setting up watches.
Watches established.
RES is a at Tue Dec 31 11:37:20 MST 2013
Setting up watches.
Watches established.
RES is aaa at Tue Dec 31 11:37:21 MST 2013
Setting up watches.
Watches established.
RES is aaaa at Tue Dec 31 11:37:22 MST 2013
Setting up watches.
Watches established.

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