updated tar.md

Author: djsnipa1

tar.md

@@ -1,8 +1,43 @@
+# `tar`
 
-
-# Make a `.tar.gz` file of each directory
+## Make a `.tar.gz` file of each directory
 
 ```bash
 find . -maxdepth 1 -mindepth 1 -type d -exec tar cvzf {}.tar.gz {}  \;
 ```
 
+---
+## Backing up the current user's HOME
+
+An approach to backing up the current user's HOME, using `tar(1)` and Gzip compression. Permissions (modes) will be preserved. The filename format will be: `UID:GID_DATE.tgz`
+
+Replace 'DEVICE' with whichever device is applicable to you, but note that it must be in the `/media/USER` (where `USER` is the username) directory, else this won't work, unless you edit the formatting section of `printf`.
+
+```bash
+tar -czvpf "$(printf '/media/%s/%s/%d:%d_%(%F)T.tgz' "$USER" 'DEVICE' ${UID:-`id -u`} ${GID:-`id -g`} -1)" "$HOME"
+```
+---
+## `tar` commands
+
+To extract an uncompressed archive:
+`tar -xvf /path/to/foo.tar`
+
+To extract a .tar in specified directory:
+`tar -xvf /path/to/foo.tar -C /path/to/destination/`
+
+To create an uncompressed archive:
+`tar -cvf /path/to/foo.tar /path/to/foo/`
+
+To extract a .tgz or .tar.gz archive:
+`tar -xzvf /path/to/foo.tgz`
+`tar -xzvf /path/to/foo.tar.gz`
+
+To create a .tgz or .tar.gz archive:
+`tar -czvf /path/to/foo.tgz /path/to/foo/`
+`tar -czvf /path/to/foo.tar.gz /path/to/foo/`
+
+To list the content of an .tgz or .tar.gz archive:
+`tar -tzvf /path/to/foo.tgz`
+`tar -tzvf /path/to/foo.tar.gz`
+
+