Update cheatsheets

dirname

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# dirname
+
+> Calculates the parent directory of a file or directory path.
+> More information: <https://www.gnu.org/software/coreutils/dirname>.
+
+- Calculate the parent directory of a given path:
+
+`dirname {{path/to/file_or_directory}}`
+
+- Calculate the parent directory of multiple paths:
+
+`dirname {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
+
+- Delimit output with a NUL character instead of a newline (useful when combining with `xargs`):
+
+`dirname --zero {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`