add the old snippet md files

old_snippets/list-tar-contents.md

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+---
+title: "list tar contents"
+date: 2021-06-13T08:31:14+02:00
+draft: false
+snippet_types:
+- tar
+---
+
+Before putting a tar file somewhere hard to access like S3 Glacier I note what is in it. I create a manifest file. Simply list the file names within:
+
+```shell
+$ tar tvf example.tar
+```
+
+With more automation worked in I came up with this:
+
+- list all the tar files using fd (rust find replacment)
+- list content of each one
+- pipe that into a file for safe keeping
+
+```shell
+$ for x in $(fd -e tar) ; do (tar tvf "$x" && echo "\n") ; done > /tmp/example_manifest
+```