Preethi schreef:
Never put "Urgent" in the Subject. Never address "us" as Experts. Just
explain your problem.
Subject: search and replace on broken lines
> I have wired problem , I have search and replace string in very huge
> text file . The problem with the string is broken in the differenet
> line.
>
> I'm having a string 'ab=test1, db=test2,dc=test3' and I want to
> replace this with 'ab=chk1,bc=chk2'.
> This string in the file is present in various fasion like
> <File>
> .........................ab=tes
> t1, db=test2,dc=test3'....
> ............................, ab=
> test1,db=test2,dc=test3' .
> ..................................
What is "very huge"? Multiple GB?
If the file is "only" a few MB, consider slurping it in:
perl -i.bak -wpe '
{ local $/;
s/a\n?
b\n?
=\n?
t\n?
e\n?
s\n?
t\n?
1\n?
,\n?
\ \n?
d\n?
b\n?
=\n?
t\n?
e\n?
s\n?
t\n?
2\n?
,\n?
d\n?
c\n?
=\n?
t\n?
e\n?
s\n?
t\n?
3\n?
/ab=chk1,bc=chk2/xgi
}
' filename
(untested)
The "local $/" sets the input record separator to undef. See perlvar.
The inserted \n? are optional newlines.
Your sample shows a
", db"
and a
",db"
so you'll need to adjust the regular expression above.
Handy:
perl -le '
$s = q{ab=test1, db=test2,dc=test3} ;
$r = join( q{\n}, split( q{}, $s ), undef) ;
print qr/$r/
'
--
Affijn, Ruud
"Gewoon is een tijger."
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