Shell Scripting
So I wrote my first shell script today. But I want it to be a little cooler. I want the variable $season to be converted to lowercase, so that if someone types in Fall, FALL, FaLl etc, it will still give them the fall message. I thought about using tr but I can't figure out a way to use tr with a variable
(tr [A-Z] [a-z] $season)=$season doesn't work. Any (simple) ideas?
Abhishek Reddy posted this at 05:48 — 21st November 2006.
He has: 3,348 posts
Joined: Jul 2001
Create another function that reads the season and converts it to lower case. Instead of calling [incode]read season[/incode] everywhere, call your new function instead.
Here's one way to convert a variable's contents to lowercase: [incode]foo=`echo $foo | tr A-Z a-z`[/incode].
Btw, is this homework?
teammatt3 posted this at 14:49 — 21st November 2006.
He has: 2,102 posts
Joined: Sep 2003
Ah, the pipe. Good idea.
Nope
. We talked about if thens in class, but I didn't quite understand the syntax. So I wanted to create a simple script to help me better understand. It took me forever to figure out the difference between this=that and this = that. I guess whitespace does matter in more instances that I thought.
Thanks for the help again Abhishek. Did you learn *nix in a class setting like this, or on your own?
Abhishek Reddy posted this at 15:12 — 21st November 2006.
He has: 3,348 posts
Joined: Jul 2001
Yeah, it's really arcane. I avoid shell scripting with bash and co. whenever possible, unless it's a quick one-liner.
Not in a class setting, but not entirely on my own. Online documentation is indispensable.
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