Help with sed Syntax
dce at mips.UUCP
dce at mips.UUCP
Thu Oct 23 05:19:49 AEST 1986
(Original article asks how to replace '^ 0.*' with a newline and the data.
I would have replied directly but had too much trouble with the address.)
One way is to do something like:
s/^ 0\(.*\)$/\
\1
This says 'replace the sequence <space>0<text> with a newline followed by
the text'.
You might also consider using awk for the whole thing. For example, the
following awk script will convert a leading " 1" to an extra newline,
and a leading " 2" to two extra newlines. It could be easily modified
to understand formfeeds and other controls.
{
if (substr($0, 1, 1) != " ") {
print substr($0, 3);
next;
}
Cntl_char = substr($0, 2, 1);
if (Cntl_char == "1") {
print "";
} else if (Cntl_char == "2") {
print "\n";
}
print substr($0, 3);
}
David
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