echo

shell 小记

# 结果就挺奇怪的
[root@localhost tests]# md5sum 1
c3be117041a113540deb0ff532b19543  1
[root@localhost tests]# echo `md5sum 1`
c3be117041a113540deb0ff532b19543 1
[root@localhost tests]# echo "`md5sum 1`"
c3be117041a113540deb0ff532b19543  1