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Full Discussion: decision, case, it then else?
Top Forums Shell Programming and Scripting decision, case, it then else? Post 14375 by LivinFree on Thursday 31st of January 2002 05:38:40 AM
Old 01-31-2002
Really? Hmm, well, perhaps you could do it a similar way:

db_tmp=`db2 "get instance"`
db_name=`echo $db_tmp | awk -F": " '{print $2}'`

Then, either do this:
cd /top/$db_name/apps/log/

or this, if the above doesn't work:

case $db_name in
db2q) cd /top/db2q/apps/log/ ;;
db2u) cd /top/db2u/apps/log/ ;;
*) echo "Eek." ;;
esac

I'm not saying that you're doing it wrong - I guess I just feel uneasy with grepping a string out of a file... I usually try to touch the disk as little as possible in a small script.

Hmm, what do you think about this:

db2 "get instance" | grep "db2q" >/dev/null 2>&1
case $? in
0) cd /top/db2q/apps/log ;;
1) cd /top/db2u/apps/log ;;
*) echo "This should never happen." ;;
esac

That way is very similar to how your are doing it now, and I find case statements a little cleaner than if statements, but that's just my opinion.

Well, I hope this is helping at least a little...

It just goes to show how many ways there are to accomplish a task in Unix!
 

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LEARN ABOUT MOJAVE

mac::apps::launch

Launch(3)						User Contributed Perl Documentation						 Launch(3)

NAME

       Mac::Apps::Launch - Mac module to launch /quit applications

SYNOPSIS

	   use Mac::Apps::Launch;
	   my @apps = qw(R*ch Arch MPGP);
	   my $path = "HD:System Folder:Finder";
	   LaunchApps([@apps], 1) or warn $^E; # launch and switch to front
	   LaunchApps([@apps])	  or warn $^E; # launch and don't switch
	   LaunchApps($app, 1)	  or warn $^E; # launch and switch to front
	   LaunchSpecs($path, 1)  or warn $^E; # use path instead of app ID
	   QuitApps(@apps)	  or warn $^E; # quit all @apps
	   QuitAllApps(@apps)	  or warn $^E; # quit all except @apps
	   IsRunning('MACS');		       # returns boolean for whether
					       # given app ID is running
	   SetFront('MACS')	  or warn $^E; # set Finder to front
	   Hide('MACS') 	  or warn $^E; # hide Finder
	   Show('Finder', 1)	  or warn $^E; # show Finder (1 == use name)

DESCRIPTION

       Simply launch or quit applications by their creator ID.	The Finder can be quit in this way, though it cannot be launched in this way.

       This module is used by many other modules.

       This module as written does not work with MacPerls prior to 5.1.4r4.

       "Hide" and "Show" do not currently work on Mac OS X.

       Apps that don't have signatures under Mac OS X currently aren't handled, except with LaunchSpecs().

       "SetFront" and "IsRunning" can take a four-char creator ID ('MACS'), a bundle ID ('com.apple.Finder'), or a path
       (/System/Library/CoreServices/Finder.app).  They both optionally take a second parameter which affirms that the data is indeed a path (for
       those rare cases where a path might possibly look like a creator ID or bundle ID ... you never know).

       "IsRunning" will return the PSN of the application if it is running, which you can then use for targetting the app, or converting to a PID
       (with "Mac::Processes::GetProcessPID()"), to send signals to it.

EXPORT

       Exports functions "QuitApps", "QuitAllApps", and "LaunchApps", "IsRunning", "LaunchSpecs", "SetFront", "Hide", "Show".

AUTHOR

       Chris Nandor <pudge@pobox.com>, http://pudge.net/

       Copyright (c) 1999-2005 Chris Nandor.  All rights reserved.  This program is free software; you can redistribute it and/or modify it under
       the same terms as Perl itself.

perl v5.18.2							    2007-01-03								 Launch(3)
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