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Top Forums Shell Programming and Scripting Bash variable not being passed Post 302962700 by cmccabe on Thursday 17th of December 2015 01:28:55 PM
Old 12-17-2015
Bash variable not being passed

In the bash below the variable date displays in the echo. However when I use it in the for loop it does not. Basically, the user inputs a date then that date is converted to the desired format of (month-day-year, no leading 0). That input is used in the for loop to return every file that matches the .bam extension. I can not seem to figure out why the $date variable is not being passed to the path to search in? Thank you Smilie.

Code:
printf "\n\n"
printf "What is the date to analyze : "; read id
    date -d "$id" +%-m-%-d-%Y ; read date #convert to month-date-year
    echo "$date"
    [ -z "$id" ] && printf "\n No date supplied. Leaving match function." && sleep 2 && return
        for f in /home/cmccabe/Desktop/NGS/bam/$date/*.bam ; do
        bname=`basename $f`
        pref=${bname%%.bam}
        echo "The bam files found in directory at $f are ${pref}"
done

 

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DATETIME.SUB(3) 							 1							   DATETIME.SUB(3)

DateTime::sub - Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime object

       Object oriented style

SYNOPSIS
public DateTime DateTime::sub (DateInterval $interval) DESCRIPTION
Procedural style DateTime date_sub (DateTime $object, DateInterval $interval) Subtracts the specified DateInterval object from the specified DateTime object. PARAMETERS
o $object -Procedural style only: A DateTime object returned by date_create(3). The function modifies this object. o $interval - A DateInterval object RETURN VALUES
Returns the DateTime object for method chaining or FALSE on failure. EXAMPLES
Example #1 DateTime.sub(3) example Object oriented style <?php $date = new DateTime('2000-01-20'); $date->sub(new DateInterval('P10D')); echo $date->format('Y-m-d') . " "; ?> Procedural style <?php $date = date_create('2000-01-20'); date_sub($date, date_interval_create_from_date_string('10 days')); echo date_format($date, 'Y-m-d'); ?> The above examples will output: 2000-01-10 Example #2 Further DateTime.sub(3) examples <?php $date = new DateTime('2000-01-20'); $date->sub(new DateInterval('PT10H30S')); echo $date->format('Y-m-d H:i:s') . " "; $date = new DateTime('2000-01-20'); $date->sub(new DateInterval('P7Y5M4DT4H3M2S')); echo $date->format('Y-m-d H:i:s') . " "; ?> The above example will output: 2000-01-19 13:59:30 1992-08-15 19:56:58 Example #3 Beware when subtracting months <?php $date = new DateTime('2001-04-30'); $interval = new DateInterval('P1M'); $date->sub($interval); echo $date->format('Y-m-d') . " "; $date->sub($interval); echo $date->format('Y-m-d') . " "; ?> The above example will output: 2001-03-30 2001-03-02 NOTES
DateTime.modify(3) is an alternative when using PHP 5.2. SEE ALSO
DateTime.add(3), DateTime.diff(3), DateTime.modify(3). PHP Documentation Group DATETIME.SUB(3)
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