Kwatog Tech Notes
perpetual newbie, forever learner
Count Occurrence of Character in String Unix Shell
Published 2012-05-29
How do we exactly count the occurrence of a particular character in a string in bash scripting? Well, there's quite a number of ways of doing this. Here's the simplest that I know of. no_fields=`echo "a|b|c " |awk -F"|" '{print NF}' ` echo $no_fields
What the hell this means? Here's the simple explanation. 1. echo "a|b|c"
- output the string 2. -F"|"
- change the field separator into pipe 3. '{print NF}'
- prints the number of files in the string based on the separator set by -F.