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Top Forums Shell Programming and Scripting Need help to replace a pattern on specific line in a data file Post 302686421 by Don Cragun on Tuesday 14th of August 2012 12:50:54 PM
Old 08-14-2012
Code:
while read file
do
    ed -s "$file" <<-EOF
        5s/-2.0000 1/1.0000 3/
        w
        q
    EOF
done < list

 

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buffer(3)						     Library Functions Manual							 buffer(3)

NAME
buffer.h - generic read/write buffering SYNTAX
#include <buffer.h> buffer* buffer_0; /* like stdio's stdin */ buffer* buffer_1; /* like stdio's stdout */ buffer* buffer_2; /* like stdio's stderr */ DESCRIPTION
buffer.h provides a generic buffer interface that can be used for read and write buffering. Buffers must be initialized with buffer_init. A buffer can only be used for reading or writing at the same time, not both. Unlike stdio, these write buffers are not flushed automatically at program termination; you must manually call buffer_flush, buf- fer_putsflush, buffer_putflush or buffer_putnlflush. EXAMPLE
See buffer_init(3) for example read buffer code. Here is typical code for printing an error message on stderr: #include <buffer.h> buffer_puts(buffer_2,"error: got only "); buffer_putulong(buffer_2,got); buffer_puts(buffer_2," bytes, but expected at least "); buffer_putulong(buffer_2,expected); buffer_putsflush(buffer_2," bytes!"); SEE ALSO
buffer_init(3), buffer_put(3), buffer_get(3), buffer_flush(3) buffer(3)
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