How to count the number of a specific character in each line?

Question

How to count the number of a specific character in each line?

I was wondering how to count the number of a specific character in each line by some text processing utilities?

For example, to count " in each line of the following text

"hello!" 

Thank you!

The first line has two, and the second line has 0.

Another example is to count ( in each line.

text-processing

3 years ago by vishaljlf39

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**Bharatv4tg1** · Answer 1 · 2021-12-10T07:19:35

Using tr ard wc:

function countchar()

{

    while IFS= read -r i; do printf "%s" "$i" | tr -dc "$1" | wc -m; done

}

Usage:

$ countchar '"' <file.txt  #returns one count per line of file.txt

1

3

0



$ countchar ')'           #will count parenthesis from stdin

$ countchar '0123456789'  #will count numbers from stdin

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How to count the number of a specific character in each line?

1 Answer

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