监视文件夹中文件更改的Linux脚本(如autospec!)

看一看 incron 和 inotify-tools .

关键字是inotifywait&inotifywatch命令

在阅读了其他帖子的回复后,我发现了一篇帖子(现在不见了),我创建了这个脚本:

#!/bin/bash

sha=0
previous_sha=0

update_sha()
{
    sha=`ls -lR . | sha1sum`
}

build () {
    ## Build/make commands here
    echo
    echo "--> Monitor: Monitoring filesystem... (Press enter to force a build/update)"
}

changed () {
    echo "--> Monitor: Files changed, Building..."
    build
    previous_sha=$sha
}

compare () {
    update_sha
    if [[ $sha != $previous_sha ]] ; then changed; fi
}

run () {
    while true; do

        compare

        read -s -t 1 && (
            echo "--> Monitor: Forced Update..."
            build
        )

    done
}

echo "--> Monitor: Init..."
echo "--> Monitor: Monitoring filesystem... (Press enter to force a build/update)"
run

这个剧本怎么样?使用“stat”命令获取文件的访问时间,并在访问时间发生更改时(访问文件时)运行命令。

#!/bin/bash
while true
do
   ATIME=`stat -c %Z /path/to/the/file.txt`
   if [[ "$ATIME" != "$LTIME" ]]
   then
       echo "RUN COMMNAD"
       LTIME=$ATIME
   fi
   sleep 5
done

如果你已经 entr 已安装,然后在shell中可以使用以下语法:

while true; do find src/ | entr -d make build; done

见 this 伊恩·沃恩的回答改进实例:

#!/usr/bin/env bash
# script:  watch
# author:  Mike Smullin <mike@smullindesign.com>
# license: GPLv3
# description:
#   watches the given path for changes
#   and executes a given command when changes occur
# usage:
#   watch <path> <cmd...>
#

path=$1
shift
cmd=$*
sha=0
update_sha() {
  sha=`ls -lR --time-style=full-iso $path | sha1sum`
}
update_sha
previous_sha=$sha
build() {
  echo -en " building...\n\n"
  $cmd
  echo -en "\n--> resumed watching."
}
compare() {
  update_sha
  if [[ $sha != $previous_sha ]] ; then
    echo -n "change detected,"
    build
    previous_sha=$sha
  else
    echo -n .
  fi
}
trap build SIGINT
trap exit SIGQUIT

echo -e  "--> Press Ctrl+C to force build, Ctrl+\\ to exit."
echo -en "--> watching \"$path\"."
while true; do
  compare
  sleep 1
done