Very Computer

I want to do something like the following:
---------------------------------------------------------------------
echo "-----------end----------------"
line_num=`expr $line_num + 1`
awk '{  
       for( ; n%=xx ; n++ )  <---xx means a number.
        printf("\n")
     }' n=$page_line          <---this need input, else it stop....
line_num=$n    <-----I want $line_num = n in awk.
---------------------------------------------------------------------
I need certain length of the outfiles, so if "----end----" end at line number
which is not enough, space lines are added to enough length number.
Thanks.

--
  =====================================================================
    Simon Tneoh Chee Boon  ~{UEV>ND~}  i?

    Hsin Chu City       NATIONAL TSING HUA UNI.
    P.O.Box 2-037       Material Science Engineering Dept. Batch '96

    R.O.China.          http://140.114.63.14:6083/simon.html
    886-35-715131-7300
  =====================================================================

: I want to do something like the following:
: ---------------------------------------------------------------------
: echo "-----------end----------------"
: line_num=`expr $line_num + 1`
: awk '{  
:        for( ; n%=xx ; n++ )  <---xx means a number.
:         printf("\n")
:      }' n=$page_line          <---this need input, else it stop....
: line_num=$n    <-----I want $line_num = n in awk.
: ---------------------------------------------------------------------
: I need certain length of the outfiles, so if "----end----" end at line number
: which is not enough, space lines are added to enough length number.
: Thanks.

: --
:   =====================================================================
:     Simon Tneoh Chee Boon  ~{UEV>ND~}  i?

:     Hsin Chu City     NATIONAL TSING HUA UNI.
:     P.O.Box 2-037     Material Science Engineering Dept. Batch '96

:     R.O.China.                http://140.114.63.14:6083/simon.html
:     886-35-715131-7300
:   =====================================================================
One thing you're missing is that an action " {} " in the body of an AWK program
is only executed after the reading of input has begun.  Since your program
needs no input, you need to move that code into the  BEGIN section.
Because you need to set variables in the BEGIN section (page_line and
line_num), the most portable approach is through selective quoting, as
shown. Also, I recommend using nawk or gawk rather than awk if possible,
if only for the superior error messages!

echo "-----------end----------------"

# line_num=`expr $line_num + 1` # awk can do this more efficiently!
page_line=100  
nawk 'BEGIN {  SIZE='"$page_line"'    # size in lines to which all files will be padded
       for(n='"$line_num"'+ 1 ; n<=SIZE ; n++ )  <---xx means a number.
        printf("\n")
     }'
--

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