finger: add page

pages/common/finger.md

@@ -0,0 +1,23 @@
+# finger
+
+> User information lookup program.
+
+- Display the user's login name, real name, terminal name and write status (as a "\*" after the terminal name if write permission is denied), idle time, login time, office location and office phone number:
+
+`finger -s`
+
+- Produce a multi-line format displaying all the information described for the option ```-s``` as well as the user's home directory, home phone number, login shell, mail status, and the contents of the files ".plan", ".project", ".pgpkey" and ".forward" from the user's home directory:
+
+`finger -l`
+
+- Prevent the ```-l``` option of finger from displaying the contents of the ".plan", ".project" and ".pgpkey" files:
+
+`finger -p`
+
+- Prevent matching against user's names and only use login names:
+
+`finger -m`
+
+- Display another user's information:
+
+`finger {{username}}`