create/update 'blog - fun with find.md' file

blog - fun with find.md

@@ -1,47 +1,62 @@
-# Fun with Find
+# Fun with Find
-
+
-## Find the total size of certain files within a directory branch
+## Find the total size of certain files within a directory branch
-
+
-```bash
+```bash
-find <path> -type f -iname '*-bin*' -exec du -ch {} +
+find <path> -type f -iname '*-bin*' -exec du -ch {} +
-```
+```
-
+
----
+---
-
+
-## Find files larger than...  
+## Find files larger than...  
-
+
-
+
-### 100M:  
+### 100M:  
-
+
-
+
-```bash
+```bash
-find . -type f -size +100000k -exec ls -lh {} \; | awk '{ print $9 ": " $5 }'
+find . -type f -size +100000k -exec ls -lh {} \; | awk '{ print $9 ": " $5 }'
-```
+```
-
+
-### 1G:  
+### 1G:  
-
+
-
+
-```bash
+```bash
-find . -type f -size +1000000k -exec ls -lh {} \; | awk '{ print $9 ": " $5 }'
+find . -type f -size +1000000k -exec ls -lh {} \; | awk '{ print $9 ": " $5 }'
-```
+```
-
+
-...and so on...
+...and so on...
-
+
----
+---
-
+
-## Find, archive and purge old files
+## Find, archive and purge old files
-
+
-```bash
+```bash
-# Find disk space used by logfiles older that 360 days
+# Find disk space used by logfiles older that 360 days
-find /var/log/hbase -type f -iname "*log*" -mtime +360 -exec du -ch {} +
+find /var/log/hbase -type f -iname "*log*" -mtime +360 -exec du -ch {} +
-
+
-# Archive those files to another location
+# Archive those files to another location
-find /var/log/hbase -type f -iname "*log*" -mtime +360 -print0 | xargs -0 tar cfz /tmp/hbase-logs.tgz
+find /var/log/hbase -type f -iname "*log*" -mtime +360 -print0 | xargs -0 tar cfz /tmp/hbase-logs.tgz
-
+
-# Delete the original files
+# Delete the original files
-find /var/log/hbase -type f -iname "*log*" -mtime +360 -delete
+find /var/log/hbase -type f -iname "*log*" -mtime +360 -delete
-```
+```
-
+
-Replace `hbase` with the log directory you want to search.  If you don't need to save the archives anywhere, skip step two.
+Replace `hbase` with the log directory you want to search.  If you don't need to save the archives anywhere, skip step two.
-
+
-[Reference](https://www.cyberciti.biz/faq/linux-unix-find-tar-files-into-tarball-command/)
+[Reference](https://www.cyberciti.biz/faq/linux-unix-find-tar-files-into-tarball-command/)
+
+---
+
+## Find files by group and mode
+
+Note: *from Teachingbooks web directory permission fix.* at OverDrive
+
+Find files that have `group: www-data` and current `permissions: 644`, then update the permissions to 664
+
+```bash
+find <directory> -type f -group www-data -perm 644 -exec ls -al {} \;
+find <directory> -type f -group www-data -perm 644 -exec chmod g+w {} \;
+```
+
+[Reference](https://ostechnix.com/find-files-based-permissions/)