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Old 12-22-2008, 11:08 AM   #1
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Cron job error

Hi friends...I tried to play a media file by scheduling a cron says the following error...can any one decode and tell the problem........

From gokul@localhost.localdomain Mon Dec 22 12:14:02 2008
Return-Path: <gokul@localhost.localdomain>
Received: from localhost.localdomain (localhost.localdomain [])
by localhost.localdomain (8.14.1/8.14.1) with ESMTP id mBM6i2IG025668
for <gokul@localhost.localdomain>; Mon, 22 Dec 2008 12:14:02 +0530
Received: (from gokul@localhost)
by localhost.localdomain (8.14.1/8.14.1/Submit) id mBM6i1YR025667;
Mon, 22 Dec 2008 12:14:01 +0530
Message-Id: <200812220644.mBM6i1YR025667@localhost.localdomain>
From: root@localhost.localdomain (Cron Daemon)
To: gokul@localhost.localdomain
Subject: Cron <gokul@localhost> realplay /media/BACKUP/Yuvraj/02 Track 2.mp3
Date: Mon, 22 Dec 2008 12:14:01 0530 (IST)
Content-Type: text/plain; charset=UTF-8
Auto-Submitted: auto-generated
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/home/gokul>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=gokul>
X-Cron-Env: <USER=gokul>

** ERROR **: Unable to open display
/usr/bin/realplay: line 57: 25666 Aborted $HELIX_LIBS/realplay.bin "$@"
Old 12-22-2008, 11:24 AM   #2
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Crontab has a very limited environment and overall it does not allocate a display. You have to explicitly allocate it by assigning the DISPLAY environment variable, but this assumes you previously know which display number is active on your monitor (usually :0.0). For example a working cron job can be:
30 20 * * * /usr/bin/env DISPLAY=:0.0 /usr/bin/xclock
For more complex tasks you have to play with the xauth command.
Old 12-22-2008, 11:50 AM   #3
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You could use mpg123 or mplayer, it doesn't need X
mpg123 /media/BACKUP/Yuvraj/02 Track 2.mp3


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