http://www.aychedee.com/2012/03/14/etc_shadow-password-hash-formats/
From the above article I can see the password can be encrypt in abot 6 different ways to genereate the hash in the format of $1$ ...
However, when I read the shadow file of my machine, I get something like this
root:l2tdfsoZQxobQ:15743:0:99999:7:::
bin:*:13653:0:99999:7:::
daemon:*:13653:0:99999:7:::
adm:*:13653:0:99999:7:::
lp:*:13653:0:99999:7:::
sync:*:13653:0:99999:7:::
shutdown:*:13653:0:99999:7:::
halt:*:13653:0:99999:7:::
mail:*:13653:0:99999:7:::
news:*:13653:0:99999:7:::
uucp:*:13653:0:99999:7:::
operator:*:13653:0:99999:7:::
games:*:13653:0:99999:7:::
gopher:*:13653:0:99999:7:::
ftp:*:13653:0:99999:7:::
nobody:*:13653:0:99999:7:::
dbus:!!:13653:0:99999:7:::
vcsa:!!:13653:0:99999:7:::
rpm:!!:13653:0:99999:7:::
haldaemon:!!:13653:0:99999:7:::
pcap:!!:13653:0:99999:7:::
nscd:!!:13653:0:99999:7:::
named:!!:13653:0:99999:7:::
netdump:!!:13653:0:99999:7:::
sshd:!!:13653:0:99999:7:::
rpc:!!:13653:0:99999:7:::
mailnull:!!:13653:0:99999:7:::
smmsp:!!:13653:0:99999:7:::
rpcuser:!!:13653:0:99999:7:::
nfsnobody:!!:13653:0:99999:7:::
apache:!!:13653:0:99999:7:::
squid:!!:13653:0:99999:7:::
webalizer:!!:13653:0:99999:7:::
xfs:!!:13653:0:99999:7:::
ntp:!!:13653:0:99999:7:::
mysql:!!:13653:0:99999:7:::
For the root password, it is like l2tdfsoZQxobQ, so what encryption method did the system use for this password?