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Full Discussion: String extraction from user input - sh
Top Forums Shell Programming and Scripting String extraction from user input - sh Post 62740 by vino on Saturday 19th of February 2005 07:19:07 AM
Old 02-19-2005
String extraction from user input - sh
Hi,

I have a shell script to build components of a product. The follow snippet will explain what I am doing.

# !/bin/sh
for choice in "$@" ;
do
case $choice in
"o") echo "Calling $choice" ; o ;;
"i") echo "Calling $choice" ; i ;;
"w") echo "Calling $choice" ; w ;;
"m") echo "Calling $choice" ; m ;;
"all") o ; i ; w ; m ; ftp ;;
*) usage ;;
esac
done

Now when I call the script I call it in the following manner: sh build.sh i o w m

What I plan to do is take the input as a single argument containing the required components; sh build.sh iowm

Is there anyway to extract the individual charaters from the input string. And then check for i/w/o/m and then carry on with the build.

Also is there a way to check for 0 arguments using $@ . Currently I use
if test $# = 0

Thanks in advance,
Vino
 

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LEARN ABOUT DEBIAN

build-lives-rfx-plugin-multi

build-lives-rfx-plugin-multi(1) 			      General Commands Manual				   build-lives-rfx-plugin-multi(1)

NAME

       build-lives-rfx-plugin-multi - builds rendered effects for LiVES

SYNOPSIS

       build-lives-rfx-plugin-multi type [scripts_dir exec_dir] [build_bindir]

DESCRIPTION

       This  perl  script  builds  rendered  effects (RFX) plugins for LiVES. If scripts_dir is not defined then type is used to locate the plugin
       scripts directory and output directory. Type can be builtin (the default), custom,
	test, or builtinx. The type builtinx forces scripts_dir and exec_dir to be read from parameters and is used during LiVES install,  and	is
       the only type which should be used if scripts_dir is specified.

       Each  plugin script in input directory is scanned to find its language code. The script is then passed to the script compiler for that lan-
       guage.  The directory location of the script_compiler may be specified by the build_bindir parameter (as is the case during LiVES installa-
       tion0; otherwise the user's $PATH will be searched.

       Return values the script returns the following values

       0 - success 1 - the "type" parameter was not defined, or set to an invalid value 3 - the builder for a plugin script was not found

SEE ALSO

       build-lives-rfx-plugin(1), lives(1)

AUTHOR

       Gabriel Finch a.k.a Salsaman (salsaman@xs4all.nl)

								    May 9 2010					   build-lives-rfx-plugin-multi(1)
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