how many times a word occur in afile

Shell Programming and Scripting
1

i want a shell script program for how many times a word occur in a file.
i need not the line number but i want the counts of the particular word
for eg:-
hai how r u..
i am from andhra pradesh..
i am from tenali.i need this answer.i need it urgently..
i hope u will answer this ...
this is the matter in a file..i want to count the word "i" here..
my answer is i-11........
like this give a shell script program

2

check this

3 
grep -w "echo" tst | wc -w

echo is the word you are looking for and tst is the file.

4

it not gives perfect count.......

5

grep just reports the number of lines which match (and you should use grep -c rather than pipe to wc).

If you have grep -o then you can use that:

grep -w -o echo tst | wc -l

In your example you seem to want to count the word-internal occurrences as well; take out the -w option in that case.

Please use code tags to make your examples clearer.

6

thanks ....its working.....

7

i need a shell script progrm...to extract a sub-string from a string...
foe eg:-
my string is madhu
i want to extract sub-string from this .my sub string is "mad"..
i want the out put will be a sub string..
0/p is mad......
pls give this answer..

mad from madhu....extracting substring from a string

8

Shouldn't that be as

grep -cw -o echo tst
9

At least with GNU grep, -c and -o doesn't work as you'd hope; you still get the count of matching lines, not occurrences. Maybe somebody should file a bug report, though.

madhu.it: Please start a new thread for a new question.

10

Oh yes,

thats a problem with GNU grep ( 2.5.1 )