I have a file which has carriage returns at different positions at different lines: 47, 48, 45, etc.
I would like to have all of them aligned at position 50.
Is there any command or script which can serve the above purpose?

eg: pgm oldfile newfile
'newfile' should contain all the carriage returns/line feeds at position 50.

Thanks.

First, in unix lines are terminated with just a LF - not a CR/LF.

There's a number of ways to do this. The printf command will work:

#!/bin/ksh

while read line
do
printf "%-50.50s\n" "$line"
done < data.file > newdata.file

You can also use any programming environment that uses printf such as perl or awk:

awk '{ printf("%-50.50s\n", $0) }' data.file > newdata.file