I tried doing this but I got permission denied, though I see proper permission in the file,
I tried giving 777 to file, still couldn't get the line appended to the file, is there any other
permission do I need to check?
bash-3.2$ sudo echo 'kern.ipc.maxpipekva="67108864"' >> /boot/loader.conf
bash: /boot/loader.conf: Permission denied
bash-3.2$ ls -l /boot/loader.conf
-rw-r--r-- 1 root wheel 1676 Apr 2 12:38 /boot/loader.conf