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Old 07-19-2006, 05:39 AM   #1
Joan Murt
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RHELAS4 -> start backup software taper


well, after fighting with RHELAS4 I've configured the dovecot POP3, the postfix, samba, VNC, users & groups, firewall, network, ups service and finally crontab.

In order to make backups, I use taper (I cannot post a link until my 4th post so if you want you can search taper in google (second option)).

The only problem that I still have is that when I try to start that program (taper) from the command line it works like charm [# taper -T scsi (enter)], but when I try to start it up from the crontab using the start_taper script or when I try to call that script in the command line [/root/taper/start_taper (enter)]

I get the message:
[bash: /root/taper/start_taper: permission denied]

Any idea on what should I do?

Thank you in advance.
Old 07-19-2006, 08:31 PM   #2
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Never used taper. That said - two different things likely here.

Issue 1:
The message you get trying to run the script from the command line indicates you don't have permission to run the script rather than the taper command itself.

From the way you wrote your taper syntax with the # at beginning of line it appears to be the root PS1 prompt so you're running as root when you do that and it works. For your script you show only the error and not actually the command line you ran. Were you root when you tried to run the script?

Do "ls -l /root/taper/start_taper". Does this show "root" as the owner? Does it show execute bit for the owner - for example:
-rwxr--r-- 1 root nagios 16 Oct 31 2005

Shows root as the owner, nagios as the group. Owner has r(ead), w(rite) and e(x)execute. group only has read and all others only have read.

Issue 2:
Items run from command line inherit the logged in user's environment. Items run from cron do NOT inherit an environment. Therefore you have to make sure the full path to commands they are going to use are included in the script. So if taper were in /usr/bin rather than having your line say "taper -T scsi" in the script you'd want it to say "/usr/bin/taper -T scsi". From command line you can determine where taper is by typing "which taper". Note this is true of any command you want to run that is not internal to the shell.
Old 07-20-2006, 02:17 AM   #3
Joan Murt
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Thank you, now it works fine.


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