From 616f46bfa72467a65d37cdac8ab638deae960c67 Mon Sep 17 00:00:00 2001 From: DarkSun Date: Tue, 15 Oct 2019 00:53:33 +0800 Subject: [PATCH] =?UTF-8?q?=E9=80=89=E9=A2=98:=2020191015=20Bash=20Script?= =?UTF-8?q?=20to=20Delete=20Files/Folders=20Older=20Than=20=E2=80=9CX?= =?UTF-8?q?=E2=80=9D=20Days=20in=20Linux?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit sources/tech/20191015 Bash Script to Delete Files-Folders Older Than -X- Days in Linux.md --- ...es-Folders Older Than -X- Days in Linux.md | 215 ++++++++++++++++++ 1 file changed, 215 insertions(+) create mode 100644 sources/tech/20191015 Bash Script to Delete Files-Folders Older Than -X- Days in Linux.md diff --git a/sources/tech/20191015 Bash Script to Delete Files-Folders Older Than -X- Days in Linux.md b/sources/tech/20191015 Bash Script to Delete Files-Folders Older Than -X- Days in Linux.md new file mode 100644 index 0000000000..e434842803 --- /dev/null +++ b/sources/tech/20191015 Bash Script to Delete Files-Folders Older Than -X- Days in Linux.md @@ -0,0 +1,215 @@ +[#]: collector: (lujun9972) +[#]: translator: ( ) +[#]: reviewer: ( ) +[#]: publisher: ( ) +[#]: url: ( ) +[#]: subject: (Bash Script to Delete Files/Folders Older Than “X” Days in Linux) +[#]: via: (https://www.2daygeek.com/bash-script-to-delete-files-folders-older-than-x-days-in-linux/) +[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/) + +Bash Script to Delete Files/Folders Older Than “X” Days in Linux +====== + +**[Disk Usage][1]** Monitoring tools are capable of alerting us when a given threshold is reached. + +But they don’t have the ingenuity to fix the **[disk usage][2]** problem on their own. + +Manual intervention is needed to solve the problem. + +But if you want to fully automate this kind of activity, what you will do. + +Yes, it can be done using the bash script. + +This script prevents alerts from **[monitoring tool][3]** because we delete old log files before filling the disk space. + +We have added many useful shell scripts in the past. If you want to check them out, go to the link below. + + * **[How to automate day to day activities using shell scripts?][4]** + + + +I’ve added two bash scripts to this article, which helps clear up old logs. + +### 1) Bash Script to Delete a Folders Older Than “X” Days in Linux + +We have a folder named **“/var/log/app/”** that contains 15 days of logs and we are going to delete 10 days old folders. + +``` +$ ls -lh /var/log/app/ + +drwxrw-rw- 3 root root 24K Oct 1 23:52 app_log.01 +drwxrw-rw- 3 root root 24K Oct 2 23:52 app_log.02 +drwxrw-rw- 3 root root 24K Oct 3 23:52 app_log.03 +drwxrw-rw- 3 root root 24K Oct 4 23:52 app_log.04 +drwxrw-rw- 3 root root 24K Oct 5 23:52 app_log.05 +drwxrw-rw- 3 root root 24K Oct 6 23:54 app_log.06 +drwxrw-rw- 3 root root 24K Oct 7 23:53 app_log.07 +drwxrw-rw- 3 root root 24K Oct 8 23:51 app_log.08 +drwxrw-rw- 3 root root 24K Oct 9 23:52 app_log.09 +drwxrw-rw- 3 root root 24K Oct 10 23:52 app_log.10 +drwxrw-rw- 3 root root 24K Oct 11 23:52 app_log.11 +drwxrw-rw- 3 root root 24K Oct 12 23:52 app_log.12 +drwxrw-rw- 3 root root 24K Oct 13 23:52 app_log.13 +drwxrw-rw- 3 root root 24K Oct 14 23:52 app_log.14 +drwxrw-rw- 3 root root 24K Oct 15 23:52 app_log.15 +``` + +This script will delete 10 days old folders and send folder list via mail. + +You can change the value **“-mtime X”** depending on your requirement. Also, replace your email id instead of us. + +``` +# /opt/script/delete-old-folders.sh + +#!/bin/bash +prev_count=0 +fpath=/var/log/app/app_log.* +find $fpath -type d -mtime +10 -exec ls -ltrh {} \; > /tmp/folder.out +find $fpath -type d -mtime +10 -exec rm -rf {} \; +count=$(cat /tmp/folder.out | wc -l) +if [ "$prev_count" -lt "$count" ] ; then +MESSAGE="/tmp/file1.out" +TO="[email protected]" +echo "Application log folders are deleted older than 15 days" >> $MESSAGE +echo "+----------------------------------------------------+" >> $MESSAGE +echo "" >> $MESSAGE +cat /tmp/folder.out | awk '{print $6,$7,$9}' >> $MESSAGE +echo "" >> $MESSAGE +SUBJECT="WARNING: Apache log files are deleted older than 15 days $(date)" +mail -s "$SUBJECT" "$TO" < $MESSAGE +rm $MESSAGE /tmp/folder.out +fi +``` + +Set an executable permission to **“delete-old-folders.sh”** file. + +``` +# chmod +x /opt/script/delete-old-folders.sh +``` + +Finally add a **[cronjob][5]** to automate this. It runs daily at 7AM. + +``` +# crontab -e + +0 7 * * * /bin/bash /opt/script/delete-old-folders.sh +``` + +You will get an output like the one below. + +``` +Application log folders are deleted older than 20 days ++--------------------------------------------------------+ +Oct 11 /var/log/app/app_log.11 +Oct 12 /var/log/app/app_log.12 +Oct 13 /var/log/app/app_log.13 +Oct 14 /var/log/app/app_log.14 +Oct 15 /var/log/app/app_log.15 +``` + +### 2) Bash Script to Delete a Files Older Than “X” Days in Linux + +We have a folder named **“/var/log/apache/”** that contains 15 days of logs and we are going to delete 10 days old files. + +The articles below are related to this topic, so you may be interested to read. + + * **[How To Find And Delete Files Older Than “X” Days And “X” Hours In Linux?][6]** + * **[How to Find Recently Modified Files/Folders in Linux][7]** + * **[How To Automatically Delete Or Clean Up /tmp Folder Contents In Linux?][8]** + + + +``` +# ls -lh /var/log/apache/ + +-rw-rw-rw- 3 root root 24K Oct 1 23:52 2daygeek_access.01 +-rw-rw-rw- 3 root root 24K Oct 2 23:52 2daygeek_access.02 +-rw-rw-rw- 3 root root 24K Oct 3 23:52 2daygeek_access.03 +-rw-rw-rw- 3 root root 24K Oct 4 23:52 2daygeek_access.04 +-rw-rw-rw- 3 root root 24K Oct 5 23:52 2daygeek_access.05 +-rw-rw-rw- 3 root root 24K Oct 6 23:54 2daygeek_access.06 +-rw-rw-rw- 3 root root 24K Oct 7 23:53 2daygeek_access.07 +-rw-rw-rw- 3 root root 24K Oct 8 23:51 2daygeek_access.08 +-rw-rw-rw- 3 root root 24K Oct 9 23:52 2daygeek_access.09 +-rw-rw-rw- 3 root root 24K Oct 10 23:52 2daygeek_access.10 +-rw-rw-rw- 3 root root 24K Oct 11 23:52 2daygeek_access.11 +-rw-rw-rw- 3 root root 24K Oct 12 23:52 2daygeek_access.12 +-rw-rw-rw- 3 root root 24K Oct 13 23:52 2daygeek_access.13 +-rw-rw-rw- 3 root root 24K Oct 14 23:52 2daygeek_access.14 +-rw-rw-rw- 3 root root 24K Oct 15 23:52 2daygeek_access.15 +``` + +This script will delete 10 days old files and send folder list via mail. + +You can change the value **“-mtime X”** depending on your requirement. Also, replace your email id instead of us. + +``` +# /opt/script/delete-old-files.sh + +#!/bin/bash +prev_count=0 +fpath=/var/log/apache/2daygeek_access.* +find $fpath -type f -mtime +15 -exec ls -ltrd {} \; > /tmp/file.out +find $fpath -type f -mtime +15 -exec rm -rf {} \; +count=$(cat /tmp/file.out | wc -l) +if [ "$prev_count" -lt "$count" ] ; then +MESSAGE="/tmp/file1.out" +TO="[email protected]" +echo "Apache Access log files are deleted older than 20 days" >> $MESSAGE +echo "+--------------------------------------------- +" >> $MESSAGE +echo "" >> $MESSAGE +cat /tmp/file.out | awk '{print $6,$7,$9}' >> $MESSAGE +echo "" >> $MESSAGE +SUBJECT="WARNING: Apache log folders are deleted older than 15 days $(date)" +mail -s "$SUBJECT" "$TO" < $MESSAGE +rm $MESSAGE /tmp/file.out +fi +``` + +Set an executable permission to **“delete-old-files.sh”** file. + +``` +# chmod +x /opt/script/delete-old-files.sh +``` + +Finally add a **[cronjob][5]** to automate this. It runs daily at 7AM. + +``` +# crontab -e + +0 7 * * * /bin/bash /opt/script/delete-old-folders.sh +``` + +You will get an output like the one below. + +``` +Apache Access log files are deleted older than 20 days ++--------------------------------------------------------+ +Oct 11 /var/log/apache/2daygeek_access.11 +Oct 12 /var/log/apache/2daygeek_access.12 +Oct 13 /var/log/apache/2daygeek_access.13 +Oct 14 /var/log/apache/2daygeek_access.14 +Oct 15 /var/log/apache/2daygeek_access.15 +``` + +-------------------------------------------------------------------------------- + +via: https://www.2daygeek.com/bash-script-to-delete-files-folders-older-than-x-days-in-linux/ + +作者：[Magesh Maruthamuthu][a] +选题：[lujun9972][b] +译者：[译者ID](https://github.com/译者ID) +校对：[校对者ID](https://github.com/校对者ID) + +本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出 + +[a]: https://www.2daygeek.com/author/magesh/ +[b]: https://github.com/lujun9972 +[1]: https://www.2daygeek.com/linux-check-disk-usage-files-and-directories-folders-size-du-command/ +[2]: https://www.2daygeek.com/linux-check-disk-space-usage-df-command/ +[3]: https://www.2daygeek.com/category/monitoring-tools/ +[4]: https://www.2daygeek.com/category/shell-script/ +[5]: https://www.2daygeek.com/crontab-cronjob-to-schedule-jobs-in-linux/ +[6]: https://www.2daygeek.com/how-to-find-and-delete-files-older-than-x-days-and-x-hours-in-linux/ +[7]: https://www.2daygeek.com/check-find-recently-modified-files-folders-linux/ +[8]: https://www.2daygeek.com/automatically-delete-clean-up-tmp-directory-folder-contents-in-linux/