Either I do something wrong or there is a regexp bug in sed !!
tssajo at hotmail.com
Sun Nov 14 16:12:03 PST 2004
You are right. My mistake. This indeed works:
sed -E -e "s/^[0-9]+/199/" conf-split > conf-split.new
Thanks for clearing this up.
> On Sun, 2004-11-14 at 18:39, Zoltan Frombach wrote:
>> match anything! After spending like an hour investigating this, I
>> that the + after my bracket expression ( I'm talking about this part
>> According to the sed man page, the regexp syntax that is used by sed is
>> documented in the re_format man page. And according to the re_format man
>> page: "A piece is an atom possibly followed by a single= `*', `+', `?',
> You need to read it more carefully. There are two kinds of regular
> expressions, "basic" and "extended". sed, ed, and grep speak BRE
> syntax, whereas awk and egrep speak ERE syntax. + is special only in
> ERE syntax.
> (And then there's GNU, where the difference between BRE and ERE is that
> some things use a preceding backslash in BRE and don't in ERE, and vice
> versa, so GNU sed does what you want if you use \+ instead of +.)
> brandon s. allbery [linux,solaris,freebsd,perl] allbery at kf8nh.com
> system administrator [WAY too many hats] allbery at ece.cmu.edu
> electrical and computer engineering, carnegie mellon univ. KF8NH
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