我正在寻找编写一个小的bash脚本,以便在启动时监视任何新创建文件的目录。如果出现新文件,我希望它的存在触发第二个脚本运行。
我看到它被用来触发压缩最近数字化的视频,并将其添加到摄取素材的日志中。
目前,我的代码如下所示:
#!/bin/sh ##VIDSTAT is a global variable coming from a parent script. ##proj is the ingestion directory coming from a parent script proj=$1 dir="/home/$USER/data/movies/$proj" dirlist=$(ls $dir) while { $VIDSTAT -eq 1 }: do for mov in $dirlist do if [ "$(( $(date +"%s") - $(stat -c "%Y" $mov) ))" -lt "5" ] then ~/bin/compressNlog.sh $mov fi done done
有没有更简单/更清洁/更少内存的方式来做到这一点?
编辑 我将在每个捕获会话中更改提取目录。我已经相应地调整了代码
Incron 怎么样?它在文件/目录更改时触发命令。
sudo apt-get install incron
例:
<path> <mask> <command>
在哪里<path>可以查看目录(意味着监视目录和/或直接在该目录中的文件(不是监视该目录的子目录中的文件!))或文件。
<path>
<mask> 可以是以下之一:
<mask>
IN_ACCESS File was accessed (read) (*) IN_ATTRIB Metadata changed (permissions, timestamps, extended attributes, etc.) (*) IN_CLOSE_WRITE File opened for writing was closed (*) IN_CLOSE_NOWRITE File not opened for writing was closed (*) IN_CREATE File/directory created in watched directory (*) IN_DELETE File/directory deleted from watched directory (*) IN_DELETE_SELF Watched file/directory was itself deleted IN_MODIFY File was modified (*) IN_MOVE_SELF Watched file/directory was itself moved IN_MOVED_FROM File moved out of watched directory (*) IN_MOVED_TO File moved into watched directory (*) IN_OPEN File was opened (*)
<command>是事件发生时应运行的命令。在命令规范中可以使用以下通配符:
<command>
$$ dollar sign $@ watched filesystem path (see above) $# event-related file name $% event flags (textually) $& event flags (numerically)
如果查看目录,则$ @保留目录路径,$#保留触发事件的文件。如果您观看文件,则$ @拥有文件的完整路径,而$#为空。
工作示例:
$sudo echo spatel > /etc/incron.allow $sudo echo root > /etc/incron.allow
启动守护程序:
$sudo /etc/init.d/incrond start
编辑incrontab档案
incrontab
$incrontab -e /home/spatel IN_CLOSE_WRITE touch /tmp/incrontest-$#
测试一下
$touch /home/spatel/alpha
结果:
$ls -l /tmp/*alpha* -rw-r--r-- 1 spatel spatel 0 Feb 4 12:32 /tmp/incrontest-alpha
注意: 在Ubuntu启动时需要激活inotify。请在Grub menu.lst文件中添加以下行:
Ubuntu
kernel /boot/vmlinuz-2.6.26-1-686 root=/dev/sda1 ro inotify=yes