Parsing Directory Names for Use as Bash Variables Post: 302218424

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Top Forums Shell Programming and Scripting Parsing Directory Names for Use as Bash Variables Post 302218424 by aefskysa on Friday 25th of July 2008 05:18:03 AM

07-25-2008

Registered User

This does not appear to be working. When I ran it as in the post above, I simply got no input. I inserted a second "if" loop to see if, in fact, the lines were being read. They are not. With the current version of the script, seen below, the output is:
>
No length
No length
>

This seems odd, because there are currently 39 directories, and the output of the first command, when run on its own, has 41 lines (the 39 directories plus lines for "./" and "../" Any ideas as to what could be causing this? Thanks again.

A bit of a change from the original intent, right now I am just trying to get an array of the first number in the directory, and I had the format slightly wrong. The directories are actually: images_#1_#2_Date/. I figure if I can get the first number working, getting the second into the array should be trivial.

Quote:

#! /bin/ksh
cd images
cnt=0
ls -f1 | sed -e 's/_/ /g' -e 's/_/ /g'| awk '{print $2}'| sort | while read line

do
if [[ ! -z "$line" ]]
then
myarray[$cnt]="$line"
cnt=$(($cnt+1))
fi

if [[ -z "$line" ]]
then
echo "No length"
fi
done

ncnt=0
while [ $ncnt -lt $cnt ]
do
echo "My Array: ${myarray[$ncnt]}"
ncnt=$(($ncnt+1))
done

Sorry, the indentation does not seem to be working.

Last edited by aefskysa; 07-25-2008 at 06:20 AM.. Reason: Indents

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LEARN ABOUT DEBIAN

libbash

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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