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Request for Opinion - JCL but for Linux??

Any interest in this:

LJL is a job creation language that takes a job file, gathers items mentioned in its various lines and here-documents, and generates a runnable .deck file (short for "deck of cards").

The .deck file is a complex Bash script that creates a log spool and several temporary files in /tmp/<jobname>. It automatically cleans up scratchable files after the run. The log file contains the output of each step, including any program results.

Any questions about it? Any suggestions?

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  • More Detail::: What SUBMIT Does with Each LJL Statement:

    For every statement, SUBMIT generates corresponding commands in the .deck file. Below is a step-by-step breakdown:

    One //jo line, as many /dd lines as are required, and as many //ex as are required

    //jo sumjob owner=me@mail.com log=print class=a

    • Generates a deck command to invoke ifclass a, which checks if the job's class allows execution at run time.

    • Generates a deck command to Log "sumjob is starting" to /var/log/JCL/ with a timestamp.

    • Generates a deck command to create /tmp/sumjob

    • Generates a deck command to initializes /tmp/sumjob/jobname.log with a formatted header (e.g., via figlet sumjob).

    Job Classes: A = Runs as soon as submitted B = Runs only if load is low enough C = Runs in Off-Hours

    //dd alias source(here|file=pathandfilename|new) disp(keep|scratch)

    • Note the disp (disposition) if keep the put the file in /home/user/.lcl/jobname as whatever the alias is if the disp(scratch) then the file will go into the /tmp/jobname directory as named by the alias.

    • Generate deck commands to

    -- if source is here: copy lines from lcl up to '/*' to the deck file as a here document if source is a file: add commands to copy the file into a working directory either in user's home or in the tmp directory under the alias. //dd users source(file=/etc/passwd) disp(keep) ==> copy /etc/passwd to /home/user/.ljl/users

    //ex somecommand --options < alias

    -Generate doc commands to execute the program as specified and save the output to the logfile In this case echo (somecommand --options < aliasproperlyexpanded ) > logfile

    The deck file now forms a fully functional batch file to do the specified computation.