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Top Forums Shell Programming and Scripting Script not running properly when run from Crontab Post 302312754 by simoncjones on Sunday 3rd of May 2009 07:57:04 AM
Old 05-03-2009
Script not running properly when run from Crontab

Hi

I am a novice Linux/Perl user and am struggling to overcome what I am sure is a simple problem.

I am using a perl program to create a shell script daily containing between 10 and 30 "at -f" commands for the same day. Then I change the file attributes to allow the file to be executed. When I run this script from the terminal it works fine and all the "at" commands are set up, however when I run it as a crontab event it only sets up the first 8 every time. Is there a simple explanation for this? If not, is there a way I can force the script to open and execute in a terminal session when invoked from crontab?

I am running the Hardy Heron version of Ubuntu.

Thanks for any help you can give me.

Simon
 

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script(1)						      General Commands Manual							 script(1)

NAME
script - Makes a transcript of terminal session SYNOPSIS
script [-a] [file] The script command makes a transcript of everything printed on your terminal. OPTIONS
Appends the transcript to file rather than writing it to file. OPERANDS
The name of an output file that will contain the transcript of the session. If this parameter is omitted, the file typescript is written. DESCRIPTION
The transcript is written to file, or appended to file if the -a option is given. If no file name is given, the transcript is saved in the file typescript. The script ends when the forked shell exits. This program is useful when you are using a CRT and want a hard-copy record of the dialog (for example, a technical writer might create an example of a working session this way). If you specify the -a option and the file does not exist, it is created. If you do not specify the -a option and the file exists, it is replaced. RESTRICTIONS
The script command requires a streams based terminal. In single user mode, streams may not be enabled. Under these circumstances, script will exit with no action. If you are the superuser and need to run this command in single user mode, use the following special instruc- tions. Enabling Streams If it is necessary to enable a streams environment in the single user mode, enter the command /sbin/init.d/streams. This command is avail- able to the superuser only. SEE ALSO
Commands: autopush(8), cat(1), echo(1), strsetup(8), tee(1) System Administration script(1)
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