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Full Discussion: adding hundreds of numbers
Top Forums UNIX for Dummies Questions & Answers adding hundreds of numbers Post 302355994 by methyl on Thursday 24th of September 2009 08:42:06 AM
Old 09-24-2009
Or: Only using "expr"

Code:
#!/bin/ksh
TOTAL=0
cat itemlist.txt | while read ITEM
do
        echo "ITEM  = ${ITEM}"
        TOTAL=`expr ${TOTAL} + ${ITEM}`
done
echo "----------"
echo "TOTAL = ${TOTAL}"
echo "----------"

./scriptname
ITEM  = 4
ITEM  = 5
ITEM  = 6
ITEM  = 7
----------
TOTAL = 22
----------


Note: Basic shell arithmetic with "expr" will only work up to a maximum total of 2,147,483,647 ((1024 x 1024 x 1024 x 2) -1).
For larger numbers use "bc".

Code:
TOTAL=`echo "${TOTAL} + ${ITEM}"|bc`

Last edited by methyl; 09-24-2009 at 09:49 AM.. Reason: Limits
 

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LEARN ABOUT REDHAT

item_opts_off

mitem_opts(3X)															    mitem_opts(3X)

NAME

       mitem_opts - set and get menu item options

SYNOPSIS

       #include <menu.h>
       int set_item_opts(ITEM *item, OPTIONS opts);
       int item_opts_on(ITEM *item, OPTIONS opts);
       int item_opts_off(ITEM *item, OPTIONS opts);
       OPTIONS item_opts(const ITEM *item);

DESCRIPTION

       The function set_item_opts sets all the given item's option bits (menu option bits may be logically-OR'ed together).

       The function item_opts_on turns on the given option bits, and leaves others alone.

       The function item_opts_off turns off the given option bits, and leaves others alone.

       The function item_opts returns the item's current option bits.

       There  is  only	one defined option bit mask, O_SELECTABLE.  When this is on, the item may be selected during menu processing.  This option
       defaults to on.

RETURN VALUE

       Except for item_opts, each routine returns one of the following:

       E_OK The routine succeeded.

       E_SYSTEM_ERROR
	    System error occurred (see errno).

SEE ALSO

       curses(3X), menu(3X).

NOTES

       The header file <menu.h> automatically includes the header file <curses.h>.

PORTABILITY

       These routines emulate the System V menu library.  They were not supported on Version 7 or BSD versions.

AUTHORS

       Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S. Raymond.

																    mitem_opts(3X)
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