在根incron作业中使用Zenity向当前登录的用户显示消息 [英] Using Zenity in a root incron job to display message to currently logged in user

问题描述

使用脚本自动上传位于目录中的文件，然后显示指向当前登录用户的链接。该机器的用户将通过LDAP进行身份验证。

Working on a script to auto-upload files that are placed in a directory, and then display a link to them to the currently logged in user. Users of the machine will be authenticated via LDAP.

incron正在监视的目录在任何用户的目录之外，并符号链接到/ home / username / uploads目录。当用户在此处放置文件时，系统会自动上传文件，而不会出现问题。

The directory that is being watched by incron is outside of any of the users' directories, and is symlinked to the /home/username/uploads directory for each user. When a user places a file here, it automatically uploads without issue.

当我遇到问题时，显示当前用户的文件URL。以下是相关代码：

Where I run into problems is displaying the file URL to the current user. Here's the relevant code:

来自/ var / spool / incron / root

from /var/spool/incron/root

/home/public/uploads IN_CLOSE_WRITE /home/public/upload_files.sh > /dev/null 2>&1

来自/home/public/upload_files.sh Zenity显示：

Lines from /home/public/upload_files.sh pertaining to Zenity display:

DISPLAY="$(ck-list-sessions | grep "active = TRUE" -A1 | tail -n 1 | cut -f2 -d"'").0"
zenity --info --text="http://aniceurlhere.com/`date +%m.%d.%y`/$filename" --display=$DISPLAY

如上所述，上传完成，但Zenity消息从不显示。查看/ var / log / cron，我可以看到作业运行并完成，没有显示错误。

As mentioned, the upload completes, but the Zenity message is never displayed. Looking through /var/log/cron, I can see the job run and complete, and no errors are shown there.

任何帮助将不胜感激。

Any assistance would be appreciated.

推荐答案

如果要使用zenity或notify-send，这需要一些工作。我没有得到它的工作，但我只是使用xmessage代替：

This takes a bit of effort if you want to use zenity or notify-send. I didn't get it working yet but I just used xmessage instead:

轻松的选项1：xmessage（在脚本中） >

Easy option 1: xmessage (in the script)

MSSG="/tmp/mssg-file-${RANDOM}" 
echo -e " MESSAGE \n ==========\n Done with task, YEY. " > ${MSSG}
xmessage -center -file ${MSSG} -display :0.0 
[[ -s ${MSSG} ]] && rm -f ${MSSG}

轻松选项2：设置DISPLAY ）

    export DISPLAY=:0 && /usr/bin/somedirectory/somecommand

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