topic Re: multiple grep question in Operating System - HP-UX

multiple grep question

Edgar_10 — Wed, 12 Mar 2003 10:43:59 GMT

Hi,

I have approx. 6000 files & want to search for about 7 different numeric strings. Any ideas how this could be done?

Regards,

Re: multiple grep question

Colin Topliss — Wed, 12 Mar 2003 10:48:29 GMT

Try using egrep:

wedny:/root=> ls |egrep -e "PHCO_27673" -e "lvmrc" -e "test1.txt"
PHCO_27673
PHCO_27673.depot
PHCO_27673.text
lvmrc
test1.txt

Col.

Re: multiple grep question

John Palmer — Wed, 12 Mar 2003 10:48:58 GMT

Identify your files and search them with grep. One way is to combine find and grep...

find -exec grep -e string1 -e string2 -e string3... {} \;

If you only want to know which files contain one of the strings, supply the -l flag to grep.

Regards,
John

Re: multiple grep question

Robin Wakefield — Wed, 12 Mar 2003 10:53:59 GMT

Hi,

A number of ways exist, depending on where your files are located. If they're all in one directory, then:

grep -e 123 -e 456 -e 789 *

or

grep -E '(123|456|789)' *

or

create a file, say /tmp/strings containing the search strings and:

grep -f /tmp/strings *

If the files are in subdirectories, then:

find /dir -type f | xargs grep -E '(123|456|789)'

or any of the other greps above.

rgds, Robin

Re: multiple grep question

Donald Kok — Wed, 12 Mar 2003 10:54:44 GMT

Re: multiple grep question

RAC_1 — Wed, 12 Mar 2003 10:55:01 GMT

ll|grep -Ei "you|me|they|anythingyouwant" /filename

Re: multiple grep question

RAC_1 — Wed, 12 Mar 2003 10:55:17 GMT

grep -Ei "you|me|they|anythingyouwant" /filename

Re: multiple grep question

Michael Steele_2 — Wed, 12 Mar 2003 10:56:23 GMT

Use find command to parse out the 6000 files in the directory and the -exec option in find combined with grep -e to search each file. For example:

cd /dir
find . -name "file pattern" -exec grep -e string -e string.

Modify your grep with:
-i = case insensative
-v = omit

For example, your string has upper and lower case char.s:

cd /dir
find . -name "file pattern" -exec grep -i -e string -e string.

For example, you want to eliminate everything and take the remainder:

cd /dir
find . -name "file pattern" -exec grep -v -e string -e string.

For example, your string has upper and lower case char.s AND you want to eliminate everything and take the remainder:

cd /dir
find . -name "file pattern" -exec grep -i -v -e string -e string.

Re: multiple grep question

Michael Steele_2 — Wed, 12 Mar 2003 10:58:34 GMT

Gees, you know, after all of that I forgot to close off the find command with curly brackets.

cd /dir
find . -name "file pattern" -exec grep -v -e string -e string {} \;

NOTE the end of all find is {} \;

(* I hate that when it happens. :-) *)

Re: multiple grep question

Edgar_10 — Wed, 12 Mar 2003 11:24:24 GMT

Hi,

Thanks for the GREAT info!!

Regards,