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The maximum length of the run program is limited to 512 characters. Usually this doesn’t feel like any kindof limitation. Sometimes though, especially when creating long inline scripts, the limit is easily reached.But even if the run program field is limited in length, the command line, that is executed after parametersubstitution, isn’t. This is because there is also no practical limitation to the maximum length…

There’s nothing special about the Bourne shell. Other command interpreters or even a mix of them, typicallyshell and something else, can be used. Naturally adding languages does result in a more complex quoting;each level of interpretation adds another level of quoting. As an example we create a small script that is used to find the IP addresses from where an invalid loginattempt has been attempted.…

In the Bourne shell it is possible to assign a variable the output (stdout) of a program. Expressions like A=`expr $A + 1` used to be very common. (Since many environments now use the Bash instead of the Bourne shell, this kindof expressions is gradually disappearing). The good news is that the scheduling server knows about the backticks. It treats them as if they were…

The previous section showed how to use quoting in the run program of the job scheduler systems BICsuite and schedulix. But sometimes we need to access environment variables, in order to adapt the behaviour of our program to the special requirements of the execution environment. As an example we assume that some input file lies in the $HOME/input directory. We’d like to tell our printargs…