uname

#!/bin/bash

# Tool to fake the output in chroot to adjust the
# used kernel version in different Makefiles.

# prepare system by rehash uname from /bin/uname
# to /tmp/uname: "hash -p /tmp/uname uname"

# A POSIX variable
OPTIND=1         # Reset in case getopts has been used previously in the shell.

if [ $# -eq 0 ]; then
	/bin/uname
fi


while getopts "asnrvmpio" opt; do
	case "$opt" in
	## collection of different output options
		### -r ==================================================================
		#### return the latest installed kernel version
		r) ls /boot/vmlinuz* | sed 's/\/boot\/vmlinuz-//' | sort -V | tail -n1
		#### …
#		r) …
		;;

		### -v ==================================================================
		#### …
#		v) …
#		;;

		### -m ==================================================================
		#### return maschine arch of an arm hard floating platform
		m) echo armhf
		;;

		# default: just use original to provide output
		# currently only working with a single option on the command call
		*) /bin/uname -$opt
		;;
	esac
done