find all files with console.log's in a directory and count total, useful for JavaScript and Typescript projects

countConsoleLogs.sh

#!/bin/sh

# this script has been tested on mac bash/terminal

# test valid input argument (directory path)

if [ $# -eq 0 ]; then
    echo "no directory to search from supplied"
    exit 1
else
    ls $1 &> /dev/null
    if [ "$?" -ne "0" ]; then
        echo "not a valid directory path"
        exit 1
    fi
fi

# if valid input directory path
dir=$1

echo "searching for console.log's from root dir: $dir"
n=0
for f in $(find $dir -type f -print); do
    # console\s*(\.|\.\n|\n\.)\s*log is new console.log pattern to match for
    # console.log was original pattern match/very primitive

    console_logs_found_in_file=$(cat $f | grep -i -o -E 'console\s*(\.|\.\n|\n\.)\s*log' | wc -l | tr -d '[:blank:]')
    if [ $console_logs_found_in_file -gt 0 ]; then
        echo "$console_logs_found_in_file found in $f"
        n=$((n + console_logs_found_in_file))
    fi
done
echo "total of $n console.log's found"
exit 0 # not sure if this needed really, default exit of program/script may be exit 0