Difference between revisions of "Sample Scripts"

From rbachwiki
Jump to navigation Jump to search
 
(17 intermediate revisions by the same user not shown)
Line 195: Line 195:
./cleanupscript
./cleanupscript
</pre>
</pre>
== Find files and rsync them to a dir ==
<h3>Regex </h3>
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
''' Use the -n option to print names without renaming them'''
rename -n 's/.html/.php/' *.html
=== Rename files adding sequential numbers ===
rename -N 001 's/find/$N/gi' *.jpg
 
=== Rename Delete string ===
rename -d '0' *.jpg
''' Result'''
030020-abc.jpg
30020-abc.jpg
 
===Rename Prepend ===
rename -A 'xxxx-' *.jpg
 
<pre>
<pre>
metacharacters meaning
metacharacters meaning
Line 282: Line 230:


</pre>
</pre>
== 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.
*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.
Line 293: Line 236:
*Fourth part -mtime gets how many days the files older than will be listed. +30 is for files older then 30 days.
*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
*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 ==
 
<pre>
==[[Bash| Bash menu]]-[[Main_Page| Home]]==
$ find . -type f -size -4G
</pre>
'''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
[[Category:Bash]]
[[Category:Bash]]

Latest revision as of 19:22, 23 June 2021

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

Regex

metacharacters	meaning
^	Matches the beginning of a string.
$	Matches the end of a string.
.	Matches any character, except a newline.
*	Matches occurrences of the preceding character, or group of characters, zero or more times.
+	Matches occurrences of the preceding character, or group of characters, one or more times.
?	Match occurrences of the preceding character, or group of characters, zero or one times.

If used after a repetition modifier, '?' specifies that the shortest possible match should be used. For instance, 'a{2,4}?' will match 'aa' even if 'aaa' and 'aaaa' would also match. See repetition modifiers, below.
|	Alternation; behaves like a boolean 'OR'. For instance, 'butter|jelly' will match either butter or jelly.
(...)	Grouping. For instance, '(eg|le)gs' will match either 'eggs' or 'legs'.
[...]	A set of characters. For instance, '[abc]' will match either 'a' or 'b' or 'c'. Character sets can be defined as:

[characters]	Matches any one of the characters listed.
[x-y]	Matches any in a range of characters between x and y, inclusive. For instance, '[c-e]' will match either c, d, or e, and '[a-z]' will match any lowercase letter.
[^characters]	Does not match characters; in other words, matches any character except those listed. Can also negate a character range; for instance, '[^a-d]' matches any character except a, b, c, or d.
[\-]	Matches the hyphen character ("-").
[x-yX-Z]	Multiple character ranges can be placed in a character set consecutively. For instance, '[a-zA-Z]' matches any letter, uppercase or lowercase.
{m[,[n]]}	A repetition modifier which matches at least m and at most n of the preceding characters. For instance, 'a{2}' will match 'aa', 'a{2,4}' will match either 'aa', 'aaa', or 'aaaa', and 'b{2,}' will match two or more consecutive b characters.
\	Escapes a metacharacter so that it is treated literally. For instance, '\+' matches a literal '+' (instead of the plus symbol having its special metacharacter meaning).
\t	Matches a tab character.
\n	Matches a newline character.
\r	Matches a carriage return character.
\w	Matches any single character classified as a "word" character (either an alphanumeric character or an underscore '_').
\W	Matches any single non-"word" character.
\s	Matches any single whitespace character (space, tab, newline).
\S	Matches any single non-whitespace character.
\d	Matches any digit character. This switch is equivalent to the character set '[0-9]'
\D	Matches any non-digit character.
\b	A "zero-width" matching assertion which matches any "word boundary".
\B	A "zero-width" matching assertion which matches any non-"word boundary".

  • 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

Bash menu- Home