Deleting three oldest files if 7 days have passed since the oldest

riahc3 · 05-15-2017, 03:53 AM

I have this code:

Code:

	#!/bin/sh
	now="$(date +'%d_%m_%Y_%H_%M_%S')"
	filename="thebackup_$now"
	backupfolder="/home/theuser/thebackup"
	fullpathbackupfile="$backupfolder/$filename"
	logfile="$backupfolder/"backup_log_"$now".txt
	touch $logfile
	echo "mysqldump has started $(date +'%d-%m-%Y %H:%M:%S')" >> "$logfile"
	mysqldump --user=mysqluser --password=mysqlpass --default-character-set=utf8 firstbd | gzip > "$fullpathbackupfile"first.gz
	mysqldump --user=mysqluser --password=mysqlpass --default-character-set=utf8 secondbd | gzip > "$fullpathbackupfile"second.gz
	echo "mysqldump finished $(date +'%d-%m-%Y %H:%M:%S')" >> "$logfile"
	chown theuser "$fullpathbackupfile"first.gz
	chown theuser "$fullpathbackupfile"second.gz
	chown theuser "$logfile"
	echo "i have changed perm" >> "$logfile"
	find "$backupfolder" -name db_backup_* -mtime +8 -exec rm {} \;
	echo "cleaning" >> "$logfile"
	echo "backup has finished $(date +'%d-%m-%Y %H:%M:%S')" >> "$logfile"
	echo "*****************" >> "$logfile"
	exit 0

Which does what it does.

What I want to do is that if gets all the files and sees the date of the oldest. If the oldest is more tan 7 days, it should get the 3 oldest files and delete them.

pan64 · 05-15-2017, 05:33 AM

http://www.linuxquestions.org/questi...gs-4175464257/

riahc3 · 05-15-2017, 05:35 AM

Quote:

Originally Posted by pan64

http://www.linuxquestions.org/questi...gs-4175464257/

What is there to indent? LOL Its all one liners.

Stop being so picky.

pan64 · 05-15-2017, 05:40 AM

please follow the rules of the forum.
show us what did you try, what's happened, what is your actual problem. Do not expect anyone will write something for you.
Especially you missed point 3, 4, and 5.

riahc3 · 05-15-2017, 05:43 AM

Quote:

Originally Posted by pan64

please follow the rules of the forum.
show us what did you try, what's happened, what is your actual problem. Do not expect anyone will write something for you.
Especially you missed point 3, 4, and 5.

This is the newbie section.

As such, it is supposed that I do not have a clue what I am doing.

So, the question is still the same: How do I check in the directory "/home/theuser/thebackup" the date of files and if the oldest file has more than 7 days, it should delete the 3 oldest files.? Thats my problem

Turbocapitalist · 05-15-2017, 06:53 AM

You will need to use the find utility and also sort and awk or head. However, do you really want to delete the three oldest even if two of them are less than seven days old? Or do you want to delete the three oldest files that are all over seven days old?

To get started with find, see -daystart and -mtime and -printf

rtmistler · 05-15-2017, 07:10 AM

Quote:

Originally Posted by riahc3

I have this code:

Code:

    #!/bin/sh

Which does what it does.

What exactly does it do now?

Quote:

Originally Posted by riahc3

What I want to do is that if gets all the files and sees the date of the oldest. If the oldest is more tan 7 days, it should get the 3 oldest files and delete them.

The find command can find files of a specified age. I feel you have shown a great deal of code non-related to your question. Perhaps consider not showing the extensive code and instead just the portions where you are trying to located files of a certain age.

Is this code which you've written? What experience do you have with bash scripting? Reason I'm asking is that people will benefit by knowing whether or not you have any experience with scripting at all, or if you are trying to modify a script to accomplish these actions, but do not necessarily have great experience with bash or scripting yourself.

Suggest you put a "set -xv" line in your script to help you debug it.

Habitual · 05-15-2017, 08:39 AM

Quote:

Originally Posted by riahc3

this code:

Code:

	find "$backupfolder" -name db_backup_* -mtime +8 -exec rm {} \;

What I want to do is that if gets all the files and sees the date of the oldest. If the oldest is more tan 7 days, it should get the 3 oldest files and delete them.

Looks contradictory to me?