board/common: fix shell and clish 'follow' commands

We want the command to show the entire log file, but fast forward to and
tail at the end, handling any file rotations from syslogd.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

board/common/rootfs/etc/bash.bashrc

@@ -40,11 +40,12 @@ log()
     less +G -r "$fn"
 }
 
-follow()
+follow ()
 {
     local fn="/var/log/syslog"
     [ -n "$1" ] && fn="/var/log/$1"
-    less +F -r "$fn"
+
+    tail -F -n +1 "$fn"
 }
 
 _logfile_completions()

src/klish-plugin-infix/xml/infix.xml

@@ -744,7 +744,7 @@
     <ACTION sym="script" in="tty" out="tty" interrupt="true">
       file=${KLISH_PARAM_fn:-syslog}
       echo -e "\e[1mPress Ctrl-C to abort ────────────────────────────────────────────\e[0m"
-      tail -F /log/$file
+      tail -F -n +1 /log/$file
     </ACTION>
   </COMMAND>