Update cheatsheets

ksh

@@ -0,0 +1,30 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ksh
+
+> Korn Shell, a Bash-compatible command-line interpreter.
+> See also: `histexpand`.
+> More information: <http://kornshell.com>.
+
+- Start an interactive shell session:
+
+`ksh`
+
+- Execute specific [c]ommands:
+
+`ksh -c "{{echo 'ksh is executed'}}"`
+
+- Execute a specific script:
+
+`ksh {{path/to/script.ksh}}`
+
+- Check a specific script for syntax errors without executing it:
+
+`ksh -n {{path/to/script.ksh}}`
+
+- Execute a specific script, printing each command in the script before executing it:
+
+`ksh -x {{path/to/script.ksh}}`