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Full Discussion: perl limitations vs. bash?
Top Forums Shell Programming and Scripting perl limitations vs. bash? Post 302421506 by unclecameron on Friday 14th of May 2010 12:50:11 PM
Old 05-14-2010
More and more of what I'm doing is advanced manipulation of data, so I'm using awk/sed/grep/whatever to bend my data and do things with it, I just have this nagging feeling with bash that I'm reaching the end of it's capability (and what it was intended for) and I may need to go some direction. I learned C a little bit and also python, C seemed like you had to write a lot more code (definitely just my opinion, don't know whether it's based on anything) to get a given job done. Python was nice, but I have this nagging feeling it wasn't going to scale down to bash and also up to web apps, at least not yet, though I guess there's a pretty active community hacking it right now. I like Java, but I'm not sure it has the flexibility of perl (another opinion of mine, possibly based on nothing), so I thought I'd possibly learn and use perl for a couple years, get some things done with it, and then look at python/java/whatever again. My theory is that the perl code I'd build could be made to "interface" with whatever language I may choose then, so I wouldn't lose anything, as long as I comment whatever I'm doing in my perl scripts. Feel free to correct any of my assumptions, I don't want to waste a couple of years. The comments so far have been VERY helpful, I appreciate both sides very much, it helps me make a better choice.
 

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LIBBASH(7)							  libbash Manual							LIBBASH(7)

NAME
libbash -- A bash shared libraries package. DESCRIPTION
libbash is a package that enables bash dynamic-like shared libraries. Actually its a tool for managing bash scripts whose functions you may want to load and use in scripts of your own. It contains a 'dynamic loader' for the shared libraries ( ldbash(1)), a configuration tool (ldbashconfig(8)), and some libraries. Using ldbash(1) you are able to load loadable bash libraries, such as getopts(1) and hashstash(1). A bash shared library that can be loaded using ldbash(1) must answer 4 requirments: 1. It must be installed in $LIBBASH_PREFIX/lib/bash (default is /usr/lib/bash). 2. It must contain a line that begins with '#EXPORT='. That line will contain (after the '=') a list of functions that the library exports. I.e. all the function that will be usable after loading that library will be listed in that line. 3. It must contain a line that begins with '#REQUIRE='. That line will contain (after the '=') a list of bash libraries that are required for our library. I.e. every bash library that is in use in our bash library must be listed there. 4. The library must be listed (For more information, see ldbashconfig(8)). Basic guidelines for writing library of your own: 1. Be aware, that your library will be actually sourced. So, basically, it should contain (i.e define) only functions. 2. Try to declare all variables intended for internal use as local. 3. Global variables and functions that are intended for internal use (i.e are not defined in '#EXPORT=') should begin with: __<library_name>_ For example, internal function myfoosort of hashstash library should be named as __hashstash_myfoosort This helps to avoid conflicts in global name space when using libraries that come from different vendors. 4. See html manual for full version of this guide. AUTHORS
Hai Zaar <haizaar@haizaar.com> Gil Ran <ril@ran4.net> SEE ALSO
ldbash(1), ldbashconfig(8), getopts(1), hashstash(1) colors(1) messages(1) urlcoding(1) locks(1) Linux Epoch Linux
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