find . “(” -name “.java” -or -name “.html” -or -name “.js” -or -name “.css” “)” -print | xargs wc -l

find . “(” -name “.java” -or -name “.html” -or -name “.js” -or -name “.css” “)” -print | xargs wc -l > statistics.txt

#!/bin/bash
#filename: count_lines.sh
len=$(echo $1 |awk '{print length($0)}')
len2=$(echo $2 |awk '{print length($0)}')
if [ $len -ne "0" ]
then
x="$1"
i="1"
cc=0
while [ $i -le "$len" ]
do
 echo `expr substr $1 $i 1 `
 if [ `expr substr $1 $i 1 ` = "l" ] || [ `expr substr $1 $i 1 ` = "w" ] || [ `expr substr $1 $i 1 ` = "c" ] || [ `expr substr $1 $i 1 ` = "k" ]
 then
 lengh = "length=$(echo "$1" |awk '{print length($0)}')"
 else
 cc=`expr $cc + 1`
 fi
 i=`expr $i + 1`
done
if [ $cc -eq "0" ]
then
 rm ~/count_output
 echo "=======================current Directory==========================" >> count_output
 pwd >> count_output
 if [ $len2 -eq "0" ]
 then
 ls -l * | wc -$1 *.* | tail -k >> ~/count_output
 else
 ls -l * | wc -$1 *.$2 | tail -k >> ~/count_output
 fi
 ls -R | grep './' > list
 sed "s/:/ /" list >> list1
 cat list1 | while read current_dir
 do
 echo "=======================$current_dir ==========================" >> ~/count_output
 cd $current_dir
 if [ $len2 -eq "0" ]
 then
 ls -l * | wc -$1 *.* | tail -k >> ~/count_output
 else
 ls -l * | wc -$1 *.$2 | tail -k >> ~/count_output
 fi
 cd -
 done
 clear
 rm list
 rm list1
else 
print "invalid entry"
fi
else
print "input options l w c k needs to be entered"
fi