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Full Discussion: Pass the value from pipe
Top Forums Shell Programming and Scripting Pass the value from pipe Post 302940618 by MadeInGermany on Tuesday 7th of April 2015 05:21:58 PM
Old 04-07-2015
If you want the variable in the main shell (instead of a subshell)
then define a function:
Code:
yday() { 
    date '+%m %d %Y' | { 
        read MONTH DAY YEAR;
        DAY=`expr "$DAY" - 1`;
        case "$DAY" in 
            0)
                MONTH=`expr "$MONTH" - 1`;
                case "$MONTH" in 
                    0)
                        MONTH=12;
                        YEAR=`expr "$YEAR" -1`
                    ;;
                esac;
                DAY=`cal $MONTH $YEAR | grep . | fmt -1 | tail -1`
            ;;
        esac;
        vardt=$?;
        if [ $vardt -ne 0 ]; then
            echo "ERROR DURING SPOOLING PREVIOUS DAY DATE.";
            exit 1;
        fi;
        echo "${MONTH}/${DAY}/${YEAR}"
    }
}
# main shell
YDAY=`yday`
echo $YDAY

This User Gave Thanks to MadeInGermany For This Post:
 

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COLUMN(1)						    BSD General Commands Manual 						 COLUMN(1)

NAME
column -- columnate lists SYNOPSIS
column [-tx] [-c columns] [-s sep] [file ...] DESCRIPTION
The column utility formats its input into multiple columns. Rows are filled before columns. Input is taken from file operands, or, by default, from the standard input. Empty lines are ignored. The options are as follows: -c Output is formatted for a display columns wide. -s Specify a set of characters to be used to delimit columns for the -t option. -t Determine the number of columns the input contains and create a table. Columns are delimited with whitespace, by default, or with the characters supplied using the -s option. Useful for pretty-printing displays. -x Fill columns before filling rows. ENVIRONMENT
The COLUMNS, LANG, LC_ALL and LC_CTYPE environment variables affect the execution of column as described in environ(7). EXIT STATUS
The column utility exits 0 on success, and >0 if an error occurs. EXAMPLES
(printf "PERM LINKS OWNER GROUP SIZE MONTH DAY " ; printf "HH:MM/YEAR NAME " ; ls -l | sed 1d) | column -t SEE ALSO
colrm(1), ls(1), paste(1), sort(1) HISTORY
The column command appeared in 4.3BSD-Reno. BUGS
Input lines are limited to LINE_MAX (2048) bytes in length. BSD
July 29, 2004 BSD
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