+: ${ZGREP:=zgrep}
+: ${GUNZIP:=gunzip}
+
-+if [ -z $(which $ZGREP) ] && ! [ -z $(which $GUNZIP) ] && [ -x $(which $GUNZIP) ] && [ -f $CONFIG ] && [ "$CONFIG" == "/proc/config.gz" ] ; then
++if [ -z $(command -v $ZGREP) ] && ! [ -z $(command -v $GUNZIP) ] && [ -x $(command -v $GUNZIP) ] && [ -f $CONFIG ] && [ "$CONFIG" == "/proc/config.gz" ] ; then
+
+ CONFIG_NEW="/tmp/config-$(uname -r)"
+ $GUNZIP -c $CONFIG > $CONFIG_NEW