How can I remount my Android/system as read-write in a bash script using adb?

Question

For info

adb remount 

returns \"remount failed: Operation not permitted\"

adb shell \'su -c  mount -o rw,remo         


        

Answer 1

I could not get the mount command to work without specifying the dev block to mount as /system

#cat /proc/mounts returns ( only the system line here )
/dev/stl12 /system rfs ro,relatime,vfat,log_off,check=no,gid/uid/rwx,iocharset=utf8 0 0

so my working command is
mount -o rw,remount -t rfs /dev/stl12 /system