easiest way to solve search problem

[djr111]

Ok, this is probably a bonehead question, but here it goes....

I want to pull file name from a directory. Unique names not all that have that name in it.



grep setp04 /tmp/filename


EG:

sept04
sept04-misc
setp04-reports

grep will find all, what are my options to capture spet04 only. I did not find any switches that would help. So I'm guessing another way besides grep must be used?



Thanks

 

[feherke]

Hi

See if your [tt]grep[/tt] implementation supports the -x option :

-x, --line-regexp
Select only those matches that exactly match the whole line.
(-x is specified by POSIX.)

Feherke.

http://free.rootshell.be/~feherke/

 

[p5wizard]

I don't get it... If you already have the filename, why do you need to grep?


HTH,

p5wizard

 

[djr111]

I did try -x using /usr/xp44/bin grep versus the default grep which is /usr/bin/grep, but it seem to eliminate. can you please try to put some logic on what is happening, because I can not figure why it is doing this.

two examples give two different results.

example one (more like I need to do it)

/usr/xpg4/bin/grep servername
/var/log/syslog
Mar 10 14:08:53 servername-1.yourcompany.com logmgr: ID = 3032 : Wed Mar 10 14:06:17 2010 : .......

Mar 10 14:08:53 servername-2.yourcompany.com logmgr: ID = 3032 : Wed Mar 10 14:06:17 2010


"-with -x flag"

/usr/xpg4/bin/grep -x servername /var/log/syslog

nothing is outputted, unlke below it works.

note: I just modified the identities of the hosts, everything else is cut and paste..

=========
/usr/xpg4/bin/grep fileA tfile
fileA
fileA-old
fileA-test


"with -x flag"
/usr/xpg4/bin/grep -x fileA tfile
fileA

 

[djr111]

I know in my example I know the file name. This will just be a piece within a script that will query. The file will not nessarily be there.

 

[p5wizard]

The file will not necessarily be there...

So, test for existence of the file?

[tt]if test -f ${DIR}/${FILE}
then
echo ${FILE} found in ${DIR}
else
echo ${FILE} not in ${DIR}
fi[/tt]

HTH,

p5wizard

 

[Annihilannic]

Read the grep man page and you'll understand why -x behaves like that.



Annihilannic.

 

[feherke]

Hi

Now it sounds like a task for the -w option :

-w, --word-regexp
Select only those lines containing matches that form whole
words. The test is that the matching substring must either be
at the beginning of the line, or preceded by a non-word
constituent character. Similarly, it must be either at the end
of the line or followed by a non-word constituent character.
Word-constituent characters are letters, digits, and the
underscore.

But note that I understand nothing from your goal.

Feherke.

http://free.rootshell.be/~feherke/

 

[djr111]

Hi I just restructured the script to use other logic. It is a script that pre dates me and I am only trying to clean it up a little.

Thanks for the info all