Shell Programming and Scripting

Hello,
I've got to filter some text from a file, where one line looks like this:

29118 open("/lib64/libtinfo.so.5", O_RDONLY) = 3

It's an output from strace as you probably understand and I want to filter from it the path of the opened program, that means

/lib64/libtinfo.so.5

There's no problem to do it for example with sed, but the problem comes when there will be some opened file called

/usr/file"with"quotation"marks

Don't know how to solve it properly with some advanced regexp.
Do you have any strong ideas?
Thank you for answers!

don't quite understand the issue, but:

Code:

echo '29118 open("/lib64/libtinfo.so.5", O_RDONLY) = 3' |sed '/ open/s/.*"\([^"][^"]*\)".*/\1/'

thank you for an idea, but your solution only works when the filename is normal.. but i have to solve all the situations, that means when a user is some bfu and names some textfile for example "ha"ha"ha", then i have to filter it like "ha"ha"ha" .. This is the thing that i can't write some strong regexp, which would be able to read the path and name of the file even if there are quotation marks in there.

Can you provide a couple of the different examples, pls (in the same strace format)?

29118 open("/lib64/libc.so.6", O_RDONLY) = 3
29120 open("/usr/share/locale/en/LC_MESSAGES/coreutils.mo", O_RDONLY) =3
29119 open("/proc/mounts", O_RDONLY) = 3
29121 open("/usr/bin/my"program", O_RDONLY) = 3

the output should be

/lib64/libc.so.6
/usr/share/locale/en/LC_MESSAGES/coreutils.mo
/proc/mounts
/usr/bin/my"program

but using your code, or mine it fails on the last line (and that's what's this thing all about), because on the last line of the output it writes only

program

Code:

sed '/ open/s/[^"]*"\([^,][^,]*\)",.*/\1/' myFile

unless of course you have ',' embedded in the file name as well.

Or more generically:

Code:

sed '/ open/s/[^"]*"\(.*\)",.*/\1/' myFile

myFile:

Code:

29118 open("/lib64/libc.so.6", O_RDONLY) = 3
29120 open("/usr/share/locale/en/LC_MESSAGES/coreutils.mo", O_RDONLY) =3
29119 open("/proc/mounts", O_RDONLY) = 3
29121 open("/usr/bin/my"program", O_RDONLY) = 3
29121 open("/usr/bin/my,program", O_RDONLY) = 3
29121 open("/usr/bin/my",program", O_RDONLY) = 3

Thank you very much, it seems that this regexp solved it