Count the number of occurence of perticular word from file - Shell Programming and Scripting

pelipeplips · #5 (**permalink**) 08-08-2007

Quote:

grep -o <string> <file> | wc -w

I tried using grep with the "-o" option and it gives me this error:
grep: illegal option -- o
What does "-o" option do?

I also need to find an occurence of a certain string within a file. Currently I'm using:

Code:

grep -c 'abc' sample.txt

But the code above only counts the occurrences per line. How will i get the total count of the 'abc' words regardless of how many occerence they have per line?

Example:
This is line 1 abc and abc
This is line 2 abc