ObiLab - BASH Scripting

Result of final test

#!/bin/bash

if [ "$EUID" -eq 0 ] # IF  = 0 you are root
  then echo "You cannot run this script as root"
  exit
fi

blk='\e[0;30m' # Black - Regular
red='\e[0;31m' # Red
grn='\e[0;32m' # Green
ylw='\e[0;33m' # Yellow
blu='\e[0;34m' # Blue
max=-1
min=9999

clear #will clear the screen

function checkFile()
{
	if [ ! -f $1 ]
	then
		echo File not found. 
		exit 1
	fi
}

function is_int()
{
        return $(test "$@" -eq "$@" > /dev/null 2>&1)
}


function countLineWordOccurrencies()
{
	result=$(cat $1 | grep $2 | wc -l  )
	echo $result
}

function countWordOccurrencies() #To Call this function, you need to pass NAMEFILE, Pattern To Match
{
	result=$(cat $1 | grep -oh $2 | wc -w)
	echo $result
}

function replaceString()  #To Call This Functions, you need to pass 3 parameters: string1, string2 (replace string1), filename
{
	checkFile $3
	sed -i 's/'"$1"'/'"$2"'/g' $3
}

read -p "Enter the name of the file to filter  " filename  # =finaltest.txt
checkFile $filename


#	result=$(countLineWordOccurrencies $filename $word)
#	echo -e Found the word $word on $red $result $blk lines

# -o, --only-matching
#              Print only the matched (non-empty) parts  of  a  matching  line,
#              with each such part on a separate output line.
# -h, --no-filename
#              Suppress  the  prefixing  of  file names on output.  This is the
#              default when there is only one file (or only standard input)  to
#              search.

# -w count word occurrencies



read -p "How many string you want to search? : " n

	if $(is_int "$n");
   		then
   			echo "You've entered the Integer: $n"
		else
   			echo "YOU SHALL NOT PAAAAASS!!!: $n is not an Integer"
  		exit 1
	fi

	#Put values into the array
	for (( i=0; i<n; i++ ))
	do
		read -p "Insert the string $i : " vet[$i]
	done


	#Print the Array
#	for (( i=0; i<n; i++ ))
#	do
#        	echo ${vet[$i]}
#	done

	#As for the print cycle, we can write code into the block in order to do "something" for each element of array

	for (( i=0; i<n; i++ ))
	do
		result=$(countWordOccurrencies $filename ${vet[$i]})
		if [ $result -gt 0 ]
		then
			echo -e "$grn\\nLet's highlight all occurrencies of the word  ${vet[$i]} \n" $blk
			cat $filename | grep --color='auto' -i  ${vet[$i]}
			echo -e "$grn\nNow count on each line the word $word, match" $blk
		        res2=$(countLineWordOccurrencies $filename ${vet[$i]})
        		echo -e Found the word $red ${vet[$i]} $blk on $red $res2 $blk lines
			res3=$(countWordOccurrencies $filename ${vet[$i]})
        		echo -e Found the word $red ${vet[$i]} $blk a total of $red $res3 $blk times
				if [ "$res3" -gt "$max" ]
				then
					max=$res3
					maxW=${vet[$i]}
					# echo res3 is $res3 # debug
					# echo max is $max   # debug
				fi

				#if (("$res3" < "$min"))
				if [ "$res3" -lt "$min" ]
				then
					min=$res3
					minW=${vet[$i]}
					# echo $min debug
					# echo $minW debug
				fi

		else
			echo -e "no match found for the word $red ${vet[$i]}" $blk
		fi
	done


	echo -e "Max matches of word $red $maxW $blk is $red $max" $blk

	if (("$min" != 9999 ))
	then
		echo -e "Min match of string $red $minW $blk is $red  $min" $blk
	else
		echo -e  "Min match of string $red $maxW $blk is $red $max" $blk
	fi


read -p "What string do you want to replace? : " S1
read -p "What do you want to write instead of $S1 : " S2
read -p "What is the file you wuold like to edit? (irreversible) : " filename

# We are sending to a function, 2 strings and a filename
replaceString $S1 $S2 $filename

echo -e $blk Verifica file di Log per il risultato
echo -e $blk Test Completato Con Successo $(date) > log.txt