sed command to replace a character at last Post: 302528956

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[Solved] sed : last character replace

Hi all , I have to write a shell script that takes a number as input , like 123 and the output will be 6 ,i.e the output will be the sum of digits of the input. I have an idea as follows, echo "123"|fold -1|tr '\n' '+'|bc But the problem is after " echo "123"|fold -1|tr '\n' '+' "...

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sed command to replace two character pattern with another pattern

Not able to paste my content. Please see the attachment :-(

LEARN ABOUT NETBSD

asa

ASA(1)							    BSD General Commands Manual 						    ASA(1)

NAME

     asa -- interpret carriage-control characters

SYNOPSIS

     asa [file ...]

DESCRIPTION

     The asa utility reads files sequentially, mapping FORTRAN carriage-control characters to line-printer control sequences, and writes them to
     the standard output.

     The first character of each line is interpreted as a carriage-control character.  The following characters are interpreted as follows:

     <space>  Output the rest of the line without change.

     0	      Output a <newline> character before printing the rest of the line.

     1	      Output a <formfeed> character before printing the rest of the line.

     +	      The trailing <newline> of the previous line is replaced by a <carriage-return> before printing the rest of the line.

     Lines beginning with characters other than the above are treated as if they begin with <space>.

EXIT STATUS

     The asa utility exit 0 on success, and >0 if an error occurs.

EXAMPLES

     To view a file containing the output of a FORTRAN program:
	   asa file

     To format the output of a FORTRAN program and redirect it to a line-printer:
	   a.out | asa | lpr

SEE ALSO

     f77(1)

STANDARDS

     The asa utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'') and to X/Open Commands and Utilities Issue 5 (``XCU5'').

AUTHORS

     J.T. Conklin, Winning Strategies, Inc.

BSD
								September 23, 1993							       BSD

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