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Full Discussion: Functions in a shell script
Top Forums Shell Programming and Scripting Functions in a shell script Post 302902699 by cnamejj on Wednesday 21st of May 2014 07:25:15 PM
Old 05-21-2014
I think if you have a 15MB shell script it's going to be slow no matter what. So if speeding things up is important the best approach is, unfortunately, to redesign the script and break functions into separate pieces. If you do that in a way that makes sense, by creating separate scripts that perform logical sub-tasks, then only the parts that need to run at any given time will be executed. It will probably be easier for you and whoever else inherits it to maintain going forward as well.

If you really have ONE shell function that's around 15MB, that's likely to be a painful redesign though.

And if the entire thing has to run each time, then breaking it up won't help much either. In that case, I think converting to another language that's compiled (C) or at least pre-parsed (python) would be your best bet.
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LEARN ABOUT OPENSOLARIS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a    Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.11							    30 Jan 2004 							 script(1)
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