Sample Scripts

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Script using if

 #!/bin/bash
echo -e "This program adds entries to a family database file . \n"
echo -e "Would you like to add an entry to the family database file? \n"
read ANSWER1
if [ $ANSWER1 = "y" -o $ANSWER1 = "Y" ]
then
echo -e "Please enter the name of the family member --> \c"
read NAME
echo -e "Please enter the family menber's relation to you (i.e. mother) -->\c"
read RELATION
echo -e "Please enter the family member's telephone number -->\c"
read PHONE
echo -e "$NAME\t$RELATION\t$PHONE">>database
fi
echo -e "Would you like to search an entry in the family databae file?\n"
read ANSWER2
if [ $ANSWER2="y" -o $ANSWER2="Y" ]
then
echo -e "What word would you like to look for? -->\c"
read WORD
grep "$WORD" database
fi

Script using CASE

#!/bin/bash
while true
do
clear
echo -e "What would you like to do?
Add and entry (a)
Search an entry (s)
Quit (q)
Enter your choice (a/s/q)-->\c"
read ANSWER
case $ANSWER in
a|A) echo -e "Please enter the name of the family member -->\c"
read NAME
echo -e "Please enter the family member's relation to you (i.e. mother) -->\c"
read RELATION
echo -e "Please enter the family member's telephone number -->\c"
read PHONE
echo -e "$NAME\t$RELATION\t$PHONE" >>database
;;
s|S) echo -e "What word would you like to look for?-->\c"
read WORD
grep "$WORD" database
sleep 4
;;
q|Q) exit
;;
*) echo "You must enter either the letter a or s"
sleep 4
;;
esac
done

While Loop

#!/bin/bash
index=1
while [ $index -lt 6 ]
do
echo "hello ${index}"
((index++))
done


while [ "$correct" != "y" ]
do
        read -p "enter your name:" name
        read -p "is ${name} matched" correct
done

Files in folder to html

echo "print directory conents to file"
echo -e "what is the title---->\c"
read title
sleep 1
echo -e '<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>' > index.html
sleep 2
echo -e $title >> index.html
sleep 2
echo '</title>' >> index.html
sleep 2
echo -e '</head>
<body>' >> index.html
sleep 2
echo '<h1>' >> index.html
sleep 2
echo $title >> index.html
sleep 2
echo '</h1>' >> index.html
sleep 2
ls | awk -F: '{print "<p> <a href=\""$1  "\">"$1 "</a></p>"}' >> index.html
sleep 2
echo -e '</body></html' >> index.html

Reading a file, line by line

read -p "Enter Filename " FILENAME
grep [rR]obert $FILENAME | while read LINE
do
echo "<p> ${LINE}</p>"
done

Send Find and replace to a separate file=

read -p "Enter Filename " FILENAME
sed 's/[rR]obert'xor/g' > two.txt
sleep 2
#clear output file
echo " Cleaned file " > three.txt
grep -n -i xor two.txt | while read LINE
do
echo "<p> ${LINE} </p>" >> three.txt
done
clear
echo "--------- two.txt -------------"
cat two.txt
echo ""
echo "------three.txt ----------------"
cat three.txt

Mysql backup to Amazon S3

#!/bin/bash
clear
mdate=`date +%F`
echo "================ backing up databasename database =============="
mysqldump -u username -ppassword databasename > databasename-$mdate.sql
sleep 5
echo "================ backing up databasename ===================="
mysqldump -u username -ppassword databasename > databasename-$mdate.sql
sleep 5
echo  "=============== Backing up databasename database ============="
mysqldump -u username -ppassword databasename > databasename-$mdate.sql
sleep 5
echo " ========= done ========="
ls  *.sql > sqlfiles.txt
clear
cat sqlfiles.txt
sleep 5
# calls another script which does the actual backup to amazon
./bksql.sh

Script that backs up to Amazon S3

#!/bin/bash
echo "--------- backing up to s3 --------------"
set -e
if [ -f sqlfiles.txt ]; then
while read line
do
aws s3 cp --region us-east-1  $line s3://bucketname
done < sqlfiles.txt

echo "++++++++++= Done  =+++++++++++++++"
else
echo " XXXXXXXXXXX  File Does not exist XXXXXXX"
fi

Count Files in Directory

count=`ls-l *.sh | wc -l 2> /dev/null`
if [ $count -ge 3 ]; then
echo "There are $count files in dirctory"
else
echo "less than 3"
fi