Update cheatsheets

tee

@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# tee
+
+> Read from `stdin` and write to `stdout` and files (or commands).
+> More information: <https://www.gnu.org/software/coreutils/tee>.
+
+- Copy `stdin` to each file, and also to `stdout`:
+
+`echo "example" | tee {{path/to/file}}`
+
+- Append to the given files, do not overwrite:
+
+`echo "example" | tee -a {{path/to/file}}`
+
+- Print `stdin` to the terminal, and also pipe it into another program for further processing:
+
+`echo "example" | tee {{/dev/tty}} | {{xargs printf "[%s]"}}`
+
+- Create a directory called "example", count the number of characters in "example" and write "example" to the terminal:
+
+`echo "example" | tee >(xargs mkdir) >(wc -c)`