functions in case conditions

viveksnv · 03-31-2008, 12:55 AM

Bash Scripting
Hello all,
how to invoke functions in case conditions.

function first
{
---
}
case
0)first;;
1)----
esac

But this does not work.

help me.

jlinkels · 03-31-2008, 06:00 AM

"Doesn't work" is way too inaccurate to describe that a script is not working as expected.

Run your script using

Code:

sh -x myscript

and try to find out what actually happens. If it is really not understandable, feel free to ask again.

jlinkels

prad77 · 04-02-2008, 03:28 PM

what err msgs you are getting?
throw enough debug echos to track your code if possible.

Gentoo

matthewg42 · 04-02-2008, 03:36 PM

works for me

Code:

$ cat t.sh
#!/bin/ksh

first () {
        echo "this is the fucntion 'first', arguments: $@"
}

v=0

case $v in
0)
        first some args
        ;;
*)
        echo "not running first"
        ;;
esac

$ ./t.sh
this is the fucntion 'first', arguments: some args

sundialsvcs · 04-02-2008, 10:15 PM

My very-frank suggestion to you is ... bash-scripting is highly over-rated!

I mean... let's get serious here. You're working in an environment that probably has at least three very-good full fledged programming-environments pre-installed and ready to go: Perl, Python, and PHP. Maybe even Ruby.

Any of those systems can be used to run your program, by the trivially-simple expedient of "shebang" ... #!command_name ... and the person (or the program) who's running your program will therefore neither know nor care.

In other words ... "if you're monkeying-around too much with bash-scripting, you're missing the point."

You have "a preponderance of riches." Deal with it.

"Bash" is intended to be ... a shell. Nothing more, nothing less. As such, it has a modicum of simple scripting-capabilities, mostly to let you specify slightly-complex things if-and-when you want to. But did "Bash" ever set out to be a programming language? No... why should it?

Bash is a shell...

Perl|PHP|Python|Ruby is a language.

... And you have equal and unlimited access to all of them.

Plan accordingly.