Update cheatsheets

tcsh

@@ -0,0 +1,34 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# tcsh
+
+> C shell with file name completion and command-line editing.
+> See also: `csh`.
+> More information: <https://manned.org/tcsh>.
+
+- Start an interactive shell session:
+
+`tcsh`
+
+- Start an interactive shell session without loading startup configs:
+
+`tcsh -f`
+
+- Execute specific [c]ommands:
+
+`tcsh -c "{{echo 'tcsh is executed'}}"`
+
+- Execute a specific script:
+
+`tcsh {{path/to/script.tcsh}}`
+
+- Check a specific script for syntax errors:
+
+`tcsh -n {{path/to/script.tcsh}}`
+
+- Execute specific commands from `stdin`:
+
+`{{echo "echo 'tcsh is executed'"}} | tcsh`