Identifying and removing control characters in a file.


 
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Old 04-13-2004
Question Identifying and removing control characters in a file.

What is the best method to identify an remove control characters in a file. Would it be easier to do this in Unix or in C.
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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>. 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 DIAGNOSTICS
The asa utility exit 0 on success, and >0 if an error occurs. SEE ALSO
f77(1) STANDARDS
The asa utility conforms to IEEE Std 1003.2-1992 (``POSIX.2''). AUTHORS
J.T. Conklin, Winning Strategies, Inc. BSD
September 23, 1993 BSD