Counts the number of occurrences of a given pattern recursively in the current directory.

countwords.sh

#!/bin/sh

set -e # Stop execution at first error

if [[ $# -eq 0 ]] ; then
  echo "Usage: $(basename $0) pattern"
  echo "       Counts the number of occurrences of a given pattern recursively"
  echo "       in the current directory."
  exit 1
fi

grep "${1}" -I --recursive . | # -I   Ignore binary files
cut -d ':' -f1 |               # -d   Field delimiter
                               # -f1  First field
uniq |
wc -l |                        # -l   Number of lines
awk '{print $1}'               #      Only print the integer without whitespaces