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grep word

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# 1  
Old 03-25-2011
grep word
Code:
grep 'Marcus' list.txt | awk '{print $2}'

list.txt
Mary 10
John 20

How do i write if grep nothing then return zero instead of display nothing in the line.
# 2  
Old 03-25-2011
I don't know how to display a certain string when the grep did not find a match. But the code below will output zero (instead of nothing) if there is no match.

Code:
grep -c "Marcus" list.txt

# 3  
Old 03-25-2011
Quote:
Originally Posted by acmvillareal
I don't know how to display a certain string when the grep did not find a match. But the code below will output zero (instead of nothing) if there is no match.

Code:
grep -c "Marcus" list.txt

Code:
grep -c "Marcus" list.txt | awk '{print $2}'

it displays nothing.

Code:
What i want is 
if i cant grep the keyword then 
  display zero 
else
  display the value

in a single line of code.
# 4  
Old 03-25-2011
Don't put the awk part. Just the grep.

[******@******** home]$ grep -c "Marcus" 1.txt
0
# 5  
Old 03-25-2011
Quote:
Originally Posted by acmvillareal
Don't put the awk part. Just the grep.

[******@******** home]$ grep -c "Marcus" 1.txt
0
i want grep the value based on the name. If the name does not exist in the file return 0 ( mean grep nothing).
# 6  
Old 03-25-2011
Quote:
Originally Posted by alvin0618
Code:
grep 'Marcus' list.txt | awk '{print $2}'

list.txt
Mary 10
John 20

How do i write if grep nothing then return zero instead of display nothing in the line.
It can be cut or awk command..
Code:
[[ -n `grep 'marcus' list.txt` ]]&& echo `grep 'marcus' list.txt|cut -d" " -f2`|| echo 0

# 7  
Old 03-25-2011
Quote:
Originally Posted by alvin0618
i want grep the value based on the name. If the name does not exist in the file return 0 ( mean grep nothing).
Do you want the script in the command line or inside a program?
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