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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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PX_DATE2STRING(3)														 PX_DATE2STRING(3)

px_date2string - Converts a date into a string.

SYNOPSIS
string px_date2string (resource $pxdoc, int $value, string $format) DESCRIPTION
Turns a date as it stored in the paradox file into human readable format. Paradox dates are the number of days since 1.1.0000. This func- tion is just for convenience. It can be easily replaced by some math and the calendar functions as demonstrated in the example below. PARAMETERS
o $pxdoc - Resource identifier of the paradox database as returned by px_new(3). o $value - Value as stored in paradox database field of type PX_FIELD_DATE. o $format - String format similar to the format used by date(3). The placeholders support by this function is a subset of those supported by date(3) (Y, y, m, n, d, j, L). RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Turn a paradox date into a human readable form <?php $px = px_new(); /* make up a date as it could be stored in */ /* a date field of a paradox db. */ /* 700000 days since 1.1.0000. */ $days = 700000; /* Use the calendar functions to print a */ /* human readable format of the date */ echo jdtogregorian($days+1721425)." "; /* px_date2string() outputs the same */ echo px_date2string($px, $days, "n/d/Y")." "; px_delete($px); ?> The above example will output: 7/15/1917 7/15/1917 SEE ALSO
px_timestamp2string(3), jdtogregorian(3). PHP Documentation Group PX_DATE2STRING(3)
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