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Top Forums Shell Programming and Scripting I want to add a variable for the results from the formula of one variable and results of another var Post 303030998 by Ibrahim A on Wednesday 20th of February 2019 10:19:33 AM
Old 02-20-2019
I want to add a variable for the results from the formula of one variable and results of another var

Good morning all,

This is the file name in question OD_Orders_2019-02-19.csv

I am trying to create a bash script to read into files with yesterdays date on the file name while retaining the rest of the files name. I would like for $y to equal, the name of the file with a formula output with the exact date in the middle. So far this is what I have:

To get yesterdays date in the correct format, I made x:

Code:
x="date -d yesterday +%Y-%m-%d"

y="OD_Orders_$x.csv"

This issue with this is that the results when I do a echo $y gives me this: OD_Orders_date -d yesterday +%Y-%m-%d.csv

Can someone please tell me how I can show the value of $x when echo $y correctly without it showing the formula? I need $y to input the filename with yesterdays date in the correct format because I want to use it more later on within this script.




Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!

Last edited by RudiC; 02-20-2019 at 11:34 AM.. Reason: Added CODE tags.
 

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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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