#A=1 #D=9 for A in `seq 1 1 9` do for B in `seq 0 1 9` do for C in `seq 0 1 9` do for D in `seq 0 1 9` do ((TEMPA=($A*1000+$B*100+$C*10+$D)*9)) ((TEMPB=$D*1000+$C*100+$B*10+$A)) if [ $TEMPA == $TEMPB ];then echo $A echo $B echo $C echo $D exit fi done done done done
A=1 D=9 for B in `seq 0 1 9` do for C in `seq 0 1 9` do ((TEMPA=($A*1000+$B*100+$C*10+$D)*9)) ((TEMPB=$D*1000+$C*100+$B*10+$A)) if [ $TEMPA == $TEMPB ];then echo $A echo $B echo $C echo $D exit fi done done