ZUBT:~ $>ls -ltr| tail -1
drwxrwxr-x 3 zzh zzh 4096 Oct 24 18:03 aaa
ZUBT:~ $>ls -ltr| tail -1| awk '{print $NF}'
aaa
NF is a predefined variable whose value is the number of fields in the current record. awk automatically updates the value of NF each time it reads a record.
标签：ZUBT,NF,tail,awk,ls,zzh From： https://www.cnblogs.com/zhangzhihui/p/16823783.html