IBG-3:-JSC-Supercomputer-HowTo.md

@@ -197,7 +197,6 @@ We add some more specific information for the file systems used in our projects.
 - Archive files using "tar-ball" compression before moving here.
 - Ideal for archiving significant simulations or those related to publications.
 
-
 ### Moving data to archive
 
 **Remark:** The same procedure applies with `jibg36` for JUWELS users instead of `jicg41`.
@@ -215,12 +214,12 @@ We add some more specific information for the file systems used in our projects.
     ```
 
     - Create tar-balls for the files (no compression):
-      ```
+      ```shell
       tar -cvf NAME.tar PATH/TO/DIR/FILES
       ```
 
     - Optionally, compress tar-balls (e.g., gzip):
-      ```
+      ```shell
       tar -czvf NAME.tar.gz PATH/TO/DIR/FILES
       ```
 
@@ -228,3 +227,28 @@ We add some more specific information for the file systems used in our projects.
     ```shell
     mv NAME.tar $ARCHIVE_jicg41/$USER
     ```
+
+### Checking memory and number of files
+
+JSC's `jutil` command gives an overview of the memory and file usage on each partition. Oftentimes more fine-grained, directory-specific information is useful. The following two commands (`find`, `du`) can do this.
+
+#### find: Check number of files
+
+Check the number of files in the current directory:
+```shell
+find . -name "*" -type f | wc -l
+```
+
+Check the number of files in all subdirectories of the current directory
+
+```shell
+for d in ./*/ ; do (find $d -type f | wc -l); done 
+```
+
+#### du: Check memory
+
+Check the memory in the current directory and subdirectories of level 1:
+
+```shell
+du -ha -d1 .
+```
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