Hour 17

1: Using the for statement, write an awk script that prints each of the fields in a record in reverse order.
A1: A possible implementation is as follows: 
#!/bin/sh

if [ $# -lt 1 ] ; then
    echo "USAGE: `basename $0` files"
    exit 1
fi

awk '{
    for (i=NF;i>=1;i--) {
        printf("%s ",$i) ;
    }
    printf("\n") ;
}' $@
2: Write an awk script that balances a checking account. Your program needs to print the balance in the account every time the user makes a transaction.

The transactions are stored in a file. Each line or record in the file has the following format:

									command:date:comment:amount

Here date is the date on which the transaction was made, comment is a string (including embedded spaces) describing the transaction, and amount is the amount of the ...

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