sed error : Unknown option to 's'

powah · 08-21-2006, 11:10 AM

$ sed -f /home/powah/sed/changePET.sed pet.cpp
sed: file /home/powah/sed/changePET.sed line 2: Unknown option to 's'

/home/powah/sed/changePED.sed is as follows:
s#red PET#beautiful red PET#

$ sed -V
GNU sed version 3.02

Copyright (C) 1998 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,
to the extent permitted by law.

Linux is: 2.4.7-10smp #1 SMP Thu Sep 6 17:09:31 EDT 2001 i686 unknown

bigrigdriver · 08-21-2006, 11:20 AM

s#red PET#beautiful red PET#

According to the sed man page, # is used to make a comment.

Try s/red PET/beautiful red PET/ instead.

s/regexp/replacement/
Attempt to match regexp against the pattern space. If successful, replace that portion matched with replacement. The
replacement may contain the special character & to refer to that
portion of the pattern space which matched, and the special
escapes \1 through \9 to refer to the corresponding matching
sub-expressions in the regexp.

powah · 08-21-2006, 12:05 PM

I tried first
s/red PET/beautiful red PET/
but got the error "Unknown option to 's'", so
I tried s#red PET#beautiful red PET#
but still got the same problem, after googling for a while but does not get an answer, finally I posted to this forum.

homey · 08-21-2006, 01:11 PM

I don't know why you get an error as it works on my FC5 box.

cat file.txt
I have a red PET
and some more
stuff here.

cat myscript
s/red PET/beautiful red PET/

Code:

sed -f myscript file.txt
I have a beautiful red PET
and some more
stuff here.

sed --version
GNU sed version 4.1.5
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE,
to the extent permitted by law.

shantanu18 · 01-04-2012, 02:52 PM

s/red PET/beautiful red PET/ [your are missing a single quote]

sed 's/red PET/beautiful red PET/' file.txt