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Full Discussion: Assign Unknown Values to Variables
Top Forums Shell Programming and Scripting Assign Unknown Values to Variables Post 302927036 by junior-helper on Sunday 30th of November 2014 02:19:25 AM
Old 11-30-2014
Quote:
> i thought of doing something like this ...
That might work, given that you don't quote the variable you're echoing.

Quote:
> ... if i knew the exact number of values returned
This could be done relatively easy before the while loop, e.g.
Code:
valcount=$(echo "${returnedvalues}" | wc -l)

Note I left the variable quoted, so we can count newline character. But this won't help you further.

Try below script.
Code:
#!/bin/bash

# number of arguments (values)
args="$#"

# no values? -> exit
[ $args -eq 0 ] && exit 1

# dynamically generating variables: var1, var2, ...
vars=$( for ((i=1;i<=$args;i++)); do  printf "%s " var${i}; done )


echo "$@" | while read ${vars}
do
# uncomment next two lines to print var: value pairs
#    for ((i=1;i<=$args;i++)); do  var=var${i}
#    printf "%s: %d\n" "var${i}" "${!var}"; done
    echo "placeholder, substitute this with useful command(s)"
done

Demo:
Code:
$ #faking script output here ;-)
$ retval="4
8
11
12
16
20"
$
$ #important! don't quote the variable
$ ./script.sh ${retval}
var1: 4
var2: 8
var3: 11
var4: 12
var5: 16
var6: 20
placeholder, substitute this with useful command(s)
$

This User Gave Thanks to junior-helper For This Post:
SkySmart
 

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LEARN ABOUT SUNOS

pref

environ(4)							   File Formats 							environ(4)

NAME

       environ, pref, variables - user-preference variables files for AT&T FACE

SYNOPSIS

       $HOME/pref/.environ

       $HOME/pref/.variables

       $HOME/FILECABINET/.pref

       $HOME/WASTEBASKET/.pref

DESCRIPTION

       The  .environ,  .pref,  and .variables files contain variables that indicate user preferences for a variety of operations. The .environ and
       .variables files are located under the user's $HOME/pref directory. The .pref files are found under  $HOME/FILECABINET,	$HOME/WASTEBASKET,
       and any directory where preferences were set via the organize command. Names and descriptions for each variable are presented below.  Vari-
       ables are listed one per line and are of the form variable=value.

   .environ Variables
       Variables found in .environ include:

       LOGINWIN[1-4]   Windows that are opened when FACE is initialized.

       SORTMODE        Sort mode for file folder listings. Values include the following hexadecimal digits:

		       1	Sorted alphabetically by name.

		       2	Files most recently modified first.

		       800	Sorted alphabetically by object type.

		       The values above may be listed in reverse order by ORing the following value:

		       1000	List objects in reverse order. For example, a value of 1002  will  produce  a  folder  listing	with  files  LEAST
				recently  modified  displayed first. A value of 1001 would produce a "reverse" alphabetical by name listing of the
				folder.

       DISPLAYMODE     Display mode for file folders. Values include the following hexadecimal digits:

		       0	File names only.

		       4	File names and brief description.

		       8	File names, description, plus additional information.

       WASTEPROMPT     Prompt before emptying wastebasket (yes/no?).

       WASTEDAYS       Number of days before emptying wastebasket.

       PRINCMD[1-3]    Print command defined to print files.

       UMASK	       Holds default permissions with which files will be created.

   .pref Variables
       Variables found in .pref are the following:

       SORTMODE        Contains the same values as the SORTMODE variable described in .environ above.

       DISPMODE        Contains the same values as the DISPLAYMODE variable described in .environ above.

   .variable Variables
       Variables found in .variables include:

       EDITOR	       Default editor.

       PS1	       Shell prompt.

SunOS 5.10							    3 Jul 1990								environ(4)
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