Simple script for analysis one line.

[j773303]

Is there simple script to analysis the character of one line?
For ex: "This is Jeff".........how many "f" in this line..... Result is 2

Thanks.

[Bill Hassell · Accepted solution]

Nothing simple but this is a start:

STRING="This is Jeff"
LEN=${#STRING}
CNTR=1
QTY=0
if [ $LEN -gt 0 ]
then
while [ $CNTR -le $LEN ]
do
CHAR=$(echo $STRING | cut -c $CNTR)
[[ $CHAR = "f" ]] && let QTY=$QTY+1
let CNTR=$CNTR+1
done
fi
echo "There are $QTY 'f' characters"

[curt larson_1]

here is something easy

text="this is jeff"
char="f"

print -- "$text" |
awk -v char="$char" '{
printf("there are %d %s in %s\n",gsub(char,""),char,$0);}'

[curt larson_1]

another way would be

text="this is jeff"
char="f"

chars=$(print -- "$text" | tr -dc "$char" )
numChars=${#chars}
print $numChars