How can I just grep one instance of a word in the file

Shell Programming and Scripting
1

I want to grep some information out of the dmidecode but when I type

dmidecode | grep Memory

I get several instances of the word. Is there a way I can just choose which instance I want to display?

2

How do you decide which instance of "Memory" you want? You must have criteria to do this.

Please show us what those criteria are.

3 
sudo dmidecode | grep Manufacturer
	Manufacturer: Hewlett-Packard
	Manufacturer: Hewlett-Packard
	Manufacturer: Hewlett-Packard
	String 5: String5 for Original Equipment Manufacturer
	Option 1: String1 for Type12 Equipment Manufacturer
	Option 2: String2 for Type12 Equipment Manufacturer
	Option 3: String3 for Type12 Equipment Manufacturer
	Option 4: String4 for Type12 Equipment Manufacturer
	Manufacturer: OEM_Define2
	Manufacturer: AD00000000000000
	Manufacturer: AD00000000000000
	Manufacturer: Intel(R) Corporation

I just want the first instance to show up

4

append

| head -1

to the end of any command, and you will get only the first line.

5

Oh cool. Thats badass thanks, what if I only wanted the 4 instance. Already tried | head -4 and that displayed 4 instances and not just the forth.

6 
| head -4 | tail -1
7 
dmidecode | awk '++s[Manufacturer] == 4'
8

cool. linux is fun

---------- Post updated at 11:06 AM ---------- Previous update was at 11:05 AM ----------

one last grep question. How can I grep two words?

---------- Post updated at 11:09 AM ---------- Previous update was at 11:06 AM ----------

ok sorry that was a dumb question

9

Hi.

Matching occurrences:

#!/usr/bin/env bash

# @(#) s1	Demonstrate matching occurrences.
# See: http://sourceforge.net/projects/cgrep/

pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C cgrep

FILE=${1-data1}
pl " Data file $FILE:"
head -10 $FILE

pl " Find all \"a\":"
cgrep a $FILE

pl " Omit first 2 \"a\":"
cgrep +N 2 a $FILE

pl " Omit first 2 \"a\", then match one:"
cgrep +N 2 -N 1 a $FILE

exit 0

producing:

% ./s1

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian GNU/Linux 5.0.8 (lenny) 
bash GNU bash 3.2.39
cgrep ATT cgrep 8.15

-----
 Data file data1:
1	a
2	b
3	a
4	c
5	a
6	d
7	a
8	e

-----
 Find all "a":
1	a
3	a
5	a
7	a

-----
 Omit first 2 "a":
5	a
7	a

-----
 Omit first 2 "a", then match one:
5	a

See link in script for access to cgrep

Best wishes ... cheers, drl