INPUT--------------------------------------------------- 03,323868096,,015,0,,,045,0,,,072,0,,,074,0,,,040,0,,,050,0,,,043,0,,,055,0,,/^M 88,100,2287432,1,0,400,2287432,52,12, ^M 16,275,2287432,0,0041880118XF,,/ ^M 88,REMARK : STANDING INSTR FROM: 323-126065 ADT FLOAT XFER CREDIT ^M 16,469,207805,0,2348128762TC,,/ ^M OUTPUT---------------------------------- 03,323868096,,015,0,,,045,0,,,072,0,,,074,0,,,040,0,,,050,0,,,043,0,,,055,0,,/^M 88,100,2287432,1,0,400,2287432,52,12,^M 16,275,2287432,0,0041880118XF,,/^M 88,REMARK : STANDING INSTR FROM: 323-126065 ADT FLOAT XFER CREDIT^M 16,469,207805,0,2348128762TC,,/^M ------------------------------------------------------------------------- I'm trying to get rid of space before ^M.Where ^M is a one character.I want my output file as shown above with new line character...I wanna use SUBstring funct ion as I used in program below. If someone can help me out with this code..also if anyone has other suggestion please let me know. 
#!/usr/bin/perl
open (diff, "<SAPPDAY.00063");
open (out, ">SAPPDAY.00063.new");
while (<diff>) {
             if (/(^16|^88)/) {
                   @words=split(/,/, $_);
                   $field_cnt=$#words ;
                   print "  Field count = $field_cnt\n" ;
                   $last_length=length($words[$field_cnt]) ;
                   $num1 =$last_length-1;
               if ( substr($words[$field_cnt], $num1, 1) eq " " ) {
                   $part1 = substr($words[$field_cnt], 0, -2 );
                   $part2 = substr($words[$field_cnt], $last_length, 1
+ );
                   $words[$field_cnt] = $part1 . $part2;
                   print out "$words[field_cnt]\n";
                 }

             }

}
~

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In reply to Substring1 by Anish

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