Need unix shell script Help

[saikrishna cinux]

Hi All,

I need Unix Shell Script files for migration work.Here i am explaining hte scenerio ...

We are shifting an application from one production server to the other DCC(Data Center Consolidation) environment .
So we have all Unix boxes. so for migrating the stuff we need unix shell scripting stuff
So completely new to unix environment and shell script.
Yesterday I learnt some Unix Basic commands and Shell Scripting ,now I am planing to learn how the migration kind of work is done using shell script

In this issue i am unable to get the proper resource, Can any experienced person can give some information,links, for learning..
Please Help me out
I am thankful to you all

regards,
Sai Krishna

[Diego Freniche]

We are shifting an application from one production server to the other DCC(Data Center Consolidation) environment .
So we have all Unix boxes. so for migrating the stuff we need unix shell scripting stuff

Have all machines the same UNIX OS? I mean, are they Linux, Solaris, HP-UX ? And most important, which UNIX Shell are you using, bash, sh, tcsh, csh, ...?
I know if this is your first UNIX-scripting time it's a hard time, but you'll learn things that haven't changed for ages. And you will learn tricks that you can use on your Windows boxes also (f.e., shutdown command, tab to complete filenames in cmd windows, symbolic links in NTFS, ...)

If you're using bash, try searching Google for bash course, bash book, or similar. A good web, but a little bit advanced, is: http://bashcurescancer.com/

There I found: http://www.pixelbeat.org/cmdline.html

But maybe you'll value http://www.freetechbooks.com/about180.html&highlight=bash

Kind regards, and go 4 it! It's always exciting to learn new things!

[saikrishna cinux]

Thanks Diego,



But still I am little bit worried about my career .
Actually I am a Java Developer working on portals but mean while my project manager has assigned this work on priority.
So for the next 4 months I am going to work on this migration to DCC using unix shell script.
will it be worthful?
Please Suggest me
Thanks
Sai

[Ulf Dittmer]

4 months is nothing over the course of a career. Migrations are one-off projects that just need to be done with. Presumably afterwards the usual work will continue on a better or more powerful platform, which should make the whole thing worthwhile. As said before, learning new things is good.

[saikrishna cinux]

Thanks for your encouragement,
MY tasks initially will be to migrated about 200 SAS-VMS scripts to HP-UX K-shell scripts and also to migrate some Java programs to HP-UX. I Need to focus on Korn shell scripting and SFTP and VMS to HP UX commands conversion..

So can You please give me some more information on these?

[Doug Slattery]

Hi Saikrihna,

Korn shell is syntactically similar to the Borne shell (and bash), which are the predominant shell scripting languages in use.

Unix shell scripts are primarily command line commands and utilities hooked up with semantics for environmental variables, conditionals and looping. You'll probably spend most of your time tracking down which commands to use in your scripts as the scripting language itself is pretty straight forward.

One good (free) resource is the man pages (I assume at least one of your HP systems has the man pages installed). Man pages are the unix on line manual pages, or, man pages for short. At the command line, if you type:
$ man ksh
- or -
$ man sh
you will get the man page for the Korn or Borne shell if the man pages are installed. If not, you'll get something along the lines of a "file or directory does not exist" error.

There's several books on shell scripting out there, and if you get one, you want to be sure it covers the Korn shell. This is because others like the C shell are quite different.

You can also poke around your systems in the /bin, /usr/bin and /usr/sbin directories to see what kind of command line utilities are installed on your system.

Here's some introductory command line concepts to master:
Entering command line parameters
Three types of files: Regular, Directory and Device
Redirection and piping
Assigning and reading environmental variables
The process table
Running a process in the background
Signals
Kernel and User modes

Here's some useful command line utilities:
who, ps, cat, tr, cut, date, grep, uname, ulimit, mount, umount, mkdev, mknod, sed and awk.

Many years ago, I taught a week course on unix and shell scripting, so if you get stuck, ask away. It might also be helpful to post some vms snippets of what you're trying to do as well when you get stuck.

And yes, knowing shell scripting is very valuable. I've even written cgi's using just shell scripts !

Aloha,
Doug

-- Nothing is impossible if I'mPossible

[Raghavan Muthu]

That's really nice of Doug.

I am sailing the same boat of Saikrishna. I would also be pleased to post my doubts here and get it clarified from ranchers as usual

[Raghavan Muthu]

The links are awesome Doug. Especially the pixelbeat's commandline reference

[kermit tensmeyer]

another resource site that I found useful
Advanced Bash-Scripting Guide

Is there something interesting that you need to get done?

[Kevin Weiss]

Another good site I've referenced in the past...
http://www.shelldorado.com

[Anand Hariharan]

Originally posted by Raghavan Muthu:
The links are awesome Doug. Especially the pixelbeat's commandline reference

I think you meant Diego ....

[Raghavan Muthu]

Originally posted by Anand Hariharan:


I think you meant Diego ....

Nope, his name is correct!

[Doug Slattery]

Thanks for the kudo's Raghavan,

originally posted by Anand Hariharan:

I think you meant Diego ....

Nope, his name is correct!

Pixelbeat is Diego's, so he deserves credit there .

Aloha,
Doug

-- Nothing is impossible if I'mPossible
[ January 26, 2008: Message edited by: Doug Slattery ]