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Full Discussion: Manipulating input into the shell "read" command
Top Forums Shell Programming and Scripting Manipulating input into the shell "read" command Post 302353172 by kingpin2502 on Monday 14th of September 2009 05:21:57 PM
Old 09-14-2009
Manipulating input into the shell "read" command
Hi All

I have a migration program that creates directories based on dates, e.g 20090714 20090812 etc.. Based on their requirements, the user will select the directory they want to perform an action on.

Currently, this is a snippet of the code I use

Code:
no_of_versions=`ls | wc -l`
        if [ $no_of_versions -gt 1 ]; then
                export dirs=`ls -d [2]*`
                echo ""
                echo "Select Version:   "
                echo ""$dirs""
                read version
       fi

Currently the user has to type in the value of the date and this isn't the most elegant of ways. Consequently, I wanted to simplify this process and this is where I need help.

Is it possible to have a situation where I display the list of date directories along the lines of

(1) 20090714 (2) 20090812 (3) 20090901

They can then select either 1 or 20090714

I have no way of knowing how many dates there could be, 1 or 10 is possible.

I'm not even entirely sure this is something I can do in shell or even perl. All help as always appreciated
 

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LEARN ABOUT CENTOS

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
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