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Top Forums Shell Programming and Scripting Display-performance in terminal, bash or python? Post 302905481 by Chubler_XL on Wednesday 11th of June 2014 08:39:04 PM
Old 06-11-2014
Yes you should definitely look at converting those 25 or so scripts to functions within the 1 script. It shouldn't require very much changes to the code to do this and the performance improvement should be immediately evident.

Also, with some careful redesign the performance of your bash script could end up very close to python for most functions.

I'm sure many people here can help in optimising bash code, but it may involve you posting some of your work here.

As an example most shell screen based I/O would use tput, which is an external program and costs a lot to call from bash.
A good idea is to avoid using $(tput rmso) everywhere in your script in printf/echo statements,
instead store this string once at the start of your script like this BOLD_OFF=$(tput rmso) and then use $BOLD_OFF everywhere else.
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DH_PYSUPPORT(1) 						  python-support						   DH_PYSUPPORT(1)

NAME
dh_pysupport - use the python-support framework to handle Python modules SYNOPSIS
dh_pysupport [debhelper options] [-V X.Y] [-X item [...]] [-n] [module dirs ...] DESCRIPTION
dh_pysupport is a debhelper program that will scan your package, detect public modules in /usr/lib/pythonX.Y/site-packages, and move them to the shared Python modules location. It will generate appropriate postinst/prerm scripts to byte-compile modules installed there for all available python versions. It will also look for private Python modules and will byte-compile them with the current Python version. You may have to list the directories containing private Python modules. If a file named debian/pyversions exists, it is used to determine the python versions with which the package can work. Appropriate dependencies on python-support, python and pythonX.Y are put in ${python:Depends}. The ${python:Versions} and ${python:Provides} optional substitution variables are made available as well. OPTIONS
module dirs If your package installs private python modules in non-standard directories, you can make dh_pysupport check those directories by passing their names on the command line. By default, it will check /usr/lib/$PACKAGE, /usr/share/$PACKAGE, /usr/lib/games/$PACKAGE and /usr/share/games/$PACKAGE -n, --noscripts Do not modify postinst/postrm scripts. -d This option is deprecated. -V X.Y Force private modules to be bytecompiled with the specific X.Y python version, regardless of the default python version on the system. -X item, --exclude=item Exclude files that contain "item" anywhere in their filename from being taken into account to generate the python dependency. It also excludes them from byte-compilation. You may use this option multiple times to build up a list of things to exclude. CONFORMS TO
Python policy as of 2006-08-10 SEE ALSO
debhelper(7) This program is a part of python-support but is made to work with debhelper. AUTHORS
Josselin Mouette <joss@debian.org>, Raphael Hertzog <hertzog@debian.org> 1.0.15 2012-06-30 DH_PYSUPPORT(1)
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