cannot star de linux ubuntu sistem

Hello im in trouble to star my computer with lunux ubuntu . A message in the screem saids alias break cd chdir command continue echo eval exec exit export false getopts hash help history left local printf pwd read readonly return set shift test times trap true type ulimit umask unalias unset wait[ [[ acpid ash awk basename blockdew cat chmod chroot chvt clear cmp cp cut deallocvt deluser devmem df du dumpkmap echo egrep env expr false fbset fgep find fstrim grep gunzip gzip hostname hwclock ifconfig ip kill ln loadfont loakmap ls lzop mkdir mkfifo mknod mkswap mktemp mosinfo more mount mv openvt pidof printf ps pwd readlink reset rm rmdir sed seq setkeycodes sh slepp sort stat static-sh stty switch_root sync tail tee test touch tr true tty umount uname uniq wc wget wich yes