lspath: add page (#9558)

* Create lspath.md

* Update pages/common/lspath.md

* Update pages/common/lspath.md

* Update pages/common/lspath.md

pages/common/lspath.md

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+# lspath
+
+> CLI app to list the contents of the PATH environment variable, with optional paging.
+> More information: <https://github.com/clementi/lspath>.
+
+- Print the contents of the system PATH variable, with one element per line:
+
+`lspath`
+
+- Print the current contents of the system PATH variable, with one element per line, with the output paged:
+
+`lspath --page`