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Top Forums Shell Programming and Scripting Looking for help with parsing file contents in bash [newbie] Post 302573240 by mehungry on Sunday 13th of November 2011 07:29:20 PM
Old 11-13-2011
Looking for help with parsing file contents in bash [newbie]

Hi

I'm just messing around with bash and trying to learn it because I have a course next semester dealing with OS design where we need to know how to use SSH client and either bash or ksh. I've never done shell scripting before.

I just started today and I was wondering how parsing files works. I'm looking at this guide (unstable.blogspot.com/2010/04/simple-bash-script-to-parse-log-file.html *sorry for that but it says i can't post url cuz im new here)but I had a few questions.

unstable.blogspot.com/2010/04/simple-bash-script-to-parse-log-file.html


How do I set the directory so it finds that file? I keep getting "can't open log.txt"

I know its a nooby questiong sorry.
 

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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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