How to print number of i occurrences in Pneumonoultramicroscopicsilicovolcanoconiosis ?

I dont know how to approach this with the commands grep and wc

CodePudding user response：

This should do it:

echo "Pneumonoultramicroscopicsilicovolcanoconiosis"|tr -cd 'i'| wc -c

CodePudding user response：

echo "Pneumonoultramicroscopicsilicovolcanoconiosis" | grep -o i | wc -l

CodePudding user response：

$ echo "Pneumonoultramicroscopicsilicovolcanoconiosis" | awk '{print gsub(/i/,"")}'
6