Update cheatsheets

linux/watch

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# watch
+
+> Execute a command repeatedly, and monitor the output in full-screen mode.
+> More information: <https://manned.org/watch>.
+
+- Monitor files in the current directory:
+
+`watch {{ls}}`
+
+- Monitor disk space and highlight the changes:
+
+`watch -d {{df}}`
+
+- Monitor "node" processes, refreshing every 3 seconds:
+
+`watch -n {{3}} "{{ps aux | grep node}}"`
+
+- Monitor disk space and if it changes, stop monitoring:
+
+`watch -g {{df}}`