Difference between revisions of "Sample Scripts"

Revision as of 22:24, 18 November 2019

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

Backup MYSQL Database

#!/bin/bash
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 > /var/www/sqlfiles.txt
sleep 5
# calls another script which does the actual backup to amazon
cd /var/dirtoscripts/
./bksql.sh

Backup HTML Directory

#!/bin/bash
bkdate = `date +%F`
cd /var/www/
sleep 1
filename=outwaterphotogallery-$bkdate.zip
#zip html folder
zip -r $filename /var/www/html
sleep 5
if [ "$filename" ]; then
aws s3 cp --region us-east-1 $filename s3://websitebackup-opi/web/
fi
sleep 4
count=`ls -l *.zip | wc -l 2> /dev/null`
if [ $count -ge 1 ]; then
mv *.zip /var/www/backups/web/
fi

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
cd /var/www/dirtoscripts/
# call script that counts the num of sql files in dir and move them to an archive folder
./cleanupscript

Find files and rsync them to a dir

find . -type f -name '*.jpg' -exec rsync -zavhP {} /dirctorytocopyto/ \;

Find Multiple filenames

find . -type f \( -name "*.nef" -o -name "*.jpg" -o -name "*.tif" \)

RSYNC copy directories with spaces

find . -type f -name '*177*' -exec rsync -zavP {} "/var/tmp/my dir" \;

Count Files in Directory

cd /var/www/

count=`ls-l *.sh | wc -l 2> /dev/null`
if [ $count -ge 1 ]; then
mv *.sql /var/www/backups/dirname
fi

Find and delete files with certain names

find -type -f -name '*one*' -exec rm {} \;

Find specific files and copy them to another folder

find -type f -name "*app1*" -exec cp {} /var/www/test/ \;

Using rename command

If its not installed in MacOS, use brew to install it

rename 's/dem/rob/g' * jpg

Will change dem and replace it with rob /g is global which will replace all occurrence of dem in the file name

rename 's/\+/_/g' *.tif

use the \ escape character with the + sign

rename '/.jpg/.tif/' *.jpg

Change jpg extension to tif

Deleting part of a filename

rename 's/dem//' *.jpg

Searching with Groupings

rename 's/(dem|rob)ng/bac/' *.jpg

The central expression of this rename command will search for strings within filenames that have the character sequence “dem” or “rob” where those sequences are immediately followed by “ng”. In other words, our search term is going to look for “string” and “demng”. The substitution term is “bacng”.

Example: demng.jpg,  robmg.jpg

Changing case of filename rename 'y/a-z/A-Z/' *.jpg

Find files x days old and delete them

#!/bin/bash
find /path/to/files/ -type f -name '*.jpg' -mtime +10 -exec mv {} /path/to/archive/ \;
find /path/to/archive/ -type f -name '*.jpg' -mtime +30 -exec rm {} \;

First part is the path where your files are located. Don’t use wildcard * if you have a lot of files because you will get Argument list too long error.
Second part -type is the file type f stands for files
Third part -name is limiting *,jpg files
Fourth part -mtime gets how many days the files older than will be listed. +30 is for files older then 30 days.
Fifth part -exec executes a command. In this case mv is the command, {} gets the filelist, path where to move the files and \; closes the command

Find files over a certain size

$ find . -type f -size -4G

You can use size switch for other formats, such as

`c’ for bytes
‘w’ for two-byte words
`k’ for Kilobytes
`M’ for Megabytes
`G’ for Gigabytes

Find Directory sizes

du -h --max-depth=2 | sort -hr

@@ Line 229: / Line 229: @@
 '''Searching with Groupings'''
   rename 's/(dem|rob)ng/bac/' *.jpg
-''The central expression of this rename command will search for strings within filenames that have the character sequence “stri” or “stra” where those sequences are immediately followed by “ng”. In other words, our search term is going to look for “string” and “strang”. The substitution term is “bang”.''
+''The central expression of this rename command will search for strings within filenames that have the character sequence “dem” or “rob” where those sequences are immediately followed by “ng”. In other words, our search term is going to look for “string” and “demng”. The substitution term is “bacng”.''
   Example: demng.jpg,  robmg.jpg