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[owl-users] sed pattern matching (new-line character)
From: GalaxyMaster (galaxyopenwall.com)
Date: Thu Oct 27 2005 - 10:32:45 CDT
I like the sed utility, and I'm regularly use sed in my scripts. The
only one thing there which bother me: the handling of new-line character
in RE pattern. According to the sed(1) manual page:
The \n sequence
in a regular expression matches the newline character, and
similarly for \a, \t, and other sequences.
I'm using the latest sed available on Owl:
jill!galaxy:~$ rpm -q sed
Now, my session script to show the problem:
jill!galaxy:~$ cat sed-test.txt
jill!galaxy:~$ cat sed-test.txt | sed 's,\n,,g'
jill!galaxy:~$ cat sed-test.txt | tr -d '\n'
line 1line 2line 3jill!galaxy:~$
The last two commands should produce the equivalent output, but they
don't :(. What I'm missing? It seems like a real bug in sed's code.
I've tested versions from 3.02 to 4.1.1, all of them have this issue.
This issue isn't Owl-related, RHEL is also has it.