Cfrtjryk

I want to find out the occurrence of a keyword group by filename inside a directory.

Example: Keyword - TEST (means TEST1, TEST2 etc can be valid results) Files - a.txt, b.txt etc. (inside a directory .. /tmp). Output will be as follows.

a.txt - 4

b.txt - 5

c.txt - 0

I tried with grep -o "TEST" a.txt and this gives only TEST and its occurrence like if a file is having 3 occurrence (like TEST1, TEST_XXX, TESTXYES) the output will be

TEST

TEST

TEST

OR If multiple files search is not possible than OUTPUT should provide all the similar string starting TEST
example

TEST

TEST_1

TEST_2

TEST4

I tried following too.

grep -c "TEST" a.txt

this gives on the count, it does not gives what was the entire text starting with TEST

The grep -c prints number of matching lines, so you won't get right result in combination with -o option. I would pipe the output of grep -o to uniq -c:

$ echo 'test1 test2 test3' >/tmp/file1

$ echo 'test1 test2 test3 test4' >/tmp/file2

$ grep -o test /tmp/file* | uniq -c

  3 /tmp/file1:test

  4 /tmp/file2:test

You can pipe it further to modify the output with some text-processing tools.